Changes

|-

|-

! style="text-align:left;" |A/C

! style="text-align:left;" |A/C

|13,500 BTU - 3 Rooftop <br>18,00 BTU - 1 Automotive(Dash)

|13,500 BTU - 3 Rooftop <br>18,00 BTU - 1 Automotive (Dash)

|-

|-

! style="text-align:left;" |Heating

! style="text-align:left;" |Heating

Associated instrumentation, accessible on the bulkhead above the pilot, includes generator ON­ OFF switch, altimeter and diesel fuel filter moni­tors. Refer to figures 2-2 through 2-13 and the fol­lowing paragraphs for locations and functions of associated operating controls and indicators.

Associated instrumentation, accessible on the bulkhead above the pilot, includes generator ON­ OFF switch, altimeter and diesel fuel filter moni­tors. Refer to figures 2-2 through 2-13 and the fol­lowing paragraphs for locations and functions of associated operating controls and indicators.

===Pilot Control Center (Dashboard)===

 

You are now seated in the control center of your new coach. You have control of all engine func­ tions , generator functions as well as all accessory functions at your fingertips.

'''Pilot Control Center (Dashboard)'''

 

You are now seated in the control center of your new coach. You have control of all engine func­tions , generator functions as well as all accessory functions at your fingertips.

Our new dash layouts for 1988 were designed for viewing continuity as well as function and beauty. You will notice as you drive that viewing angle changes only slightly from the road to any part of the dash.

Our new dash layouts for 1988 were designed for viewing continuity as well as function and beauty. You will notice as you drive that viewing angle changes only slightly from the road to any part of the dash.

The dash is divided into eight main panels, (fig. 2-2) which are the upper dash panel, lower dash panel, shifter panel, upper right hand dash panel, lower right hand dash panel, monitor panel, moni­tor control panel and inverter panel. The gauges, switches and warning lights installed in these panels will be explained as far as function and op­ eration in the following text.

The dash is divided into eight main panels, (fig. 2-2) which are the upper dash panel, lower dash panel, shifter panel, upper right hand dash panel, lower right hand dash panel, monitor panel, moni­tor control panel and inverter panel. The gauges, switches and warning lights installed in these panels will be explained as far as function and op­eration in the following text.

'''NOTE:''' Some items operate at all times, some require the 12 volt master to be on, while others need the 12 volt master and the ignition on. Gauges marked with an * require the engine to be at nor­mal operating temperature for correct readings.  

'''NOTE:''' Some items operate at all times, some require the 12 volt master to be on, while others need the 12 volt master and the ignition on. Gauges marked with an * require the engine to be at nor­mal operating temperature for correct readings.

====Upper Dash Panel====

====Upper Dash Panel====

[[File:1989 WB Upper Dash Panel .png|center|frameless|655x655px]]

<br />[[File:1989 WB Upper Dash Panel .png|center|frameless|655x655px]]

#'''Engine Water Temperature -''' Normal water temperature should be between 180° and 210° for safe operation.

#'''Engine Water Temperature -''' Normal water temperature should be between 180° and 210° for safe operation.

#'''Headlight Alert''' - When the ignition switch is turned off and the headlight switch is on, this red warning light, along with a buzzer , will come on. These will remain on until the headlight switch is turned off or the ignition switch is turned back on.

#'''Headlight Alert''' - When the ignition switch is turned off and the headlight switch is on, this red warning light, along with a buzzer , will come on. These will remain on until the headlight switch is turned off or the ignition switch is turned back on.

====Lower Dash Panel====

====Lower Dash Panel====

[[File:1988 WB Lower Dash Panel Diagram.png|center|frameless|863x863px]]

[[File:1988 WB Lower Dash Panel Diagram.png|center|frameless|863x863px]]

#'''Headlights''' - The Headlight switch serves two functions . Press P for parking lights and gauge illumination. Press the bulb symbol for headlights, parking lights and gauge illumination.  The dimmer controls brightness of all gauges in dash. Turn counter-clockwise to increase or clockwise to decrease the brightness .

#'''Headlights''' - The Headlight switch serves two functions . Press P for parking lights and gauge illumination. Press the bulb symbol for headlights, parking lights and gauge illumination.  The dimmer controls brightness of all gauges in dash. Turn counter-clockwise to increase or clockwise to decrease the brightness .

===Shifter Panel===

====Shifter Panel====

[[File:1989 WB Shifter Panel Diagram.png|right|frameless|457x457px]]

[[File:1989 WB Shifter Panel Diagram.png|right|frameless|457x457px]]

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#'''AC/Heat Master''' - These switches allow the driver to control roof air con­ditioners or the electric heaters.

#'''AC/Heat Master''' - These switches allow the driver to control roof air con­ditioners or the electric heaters.

===Upper Right Hand Dash Panel===

====Upper Right Hand Dash Panel====

[[File:1989 WB Upper Right Hand Dash Panel Diagram.png|right|frameless|543x543px]]

[[File:1989 WB Upper Right Hand Dash Panel Diagram.png|right|frameless|543x543px]]

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===Lower Right Hand Dash Panel===

====Lower Right Hand Dash Panel====

[[File:Lower Right Hand Dash Panel.png|right|frameless|382x382px]]

<br />[[File:Lower Right Hand Dash Panel.png|right|frameless|382x382px]]

'''Ignition Switch''' - A four-position, standard type key switch . In OFF position (center), ignition and accessory positions are disabled and the key can be inserted or removed. In ON position (right) the battery is connected to the engine- run ignition circuits and the key can be advanced to START to start the engine, providing that the transmission selector is in neutral N position and toggle switch in engine compartment is up (front) . ACCESSORY position (left) allows operation of accessories without activating the engine-run circuits.

'''Ignition Switch''' - A four-position, standard type key switch . In OFF position (center), ignition and accessory positions are disabled and the key can be inserted or removed. In ON position (right) the battery is connected to the engine- run ignition circuits and the key can be advanced to START to start the engine, providing that the transmission selector is in neutral N position and toggle switch in engine compartment is up (front) . ACCESSORY position (left) allows operation of accessories without activating the engine-run circuits.

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===Overhead Control Center===

====Overhead Control Center====

 

 

[[File:89 WB 40 - Pilot Overhead Dash Diagram.png|frameless|800x800px]]<br />

[[File:89 WB 40 - Pilot Overhead Dash Diagram.png|frameless|800x800px]]<br />

#'''FUEL VACUUM GAUGE''' - Racor fuel filter element should be changed when pointer goes into red.

#'''FUEL VACUUM GAUGE''' - Racor fuel filter element should be changed when pointer goes into red.

===Co-Pilot's Overhead Dash===

====Co-Pilot's Overhead Dash====

 

 

'''GENERATOR OIL PRESSURE''' - Shows the oil pressure, not amount of oil in the generator engine reservoir. This gauge will normally read between 30 and 60 psi. Low oil pressure indications are often a symptom of possible generator failure. Oil level should be checked on a regular basis. Note that the generator has a low oil pressure shut-off switch which operates if the generator oil pressure falls below 15 psi.  

'''GENERATOR OIL PRESSURE''' - Shows the oil pressure, not amount of oil in the generator engine reservoir. This gauge will normally read between 30 and 60 psi. Low oil pressure indications are often a symptom of possible generator failure. Oil level should be checked on a regular basis. Note that the generator has a low oil pressure shut-off switch which operates if the generator oil pressure falls below 15 psi.  

'''D.C. AMPERAGE''' - Ammeter on left (labeled CHARGE) shows net current flow to or from batteries. Needle movement from the center of the gauge indicates discharge to the left and charge to the right. When parked, following highway travel , it is normal to see a needle position to the left of center even when plugged into shore power (or running generator). This will gradually diminish and should eventually show some movement to the right with coach loads turned off. Ammeter on right (labelled DISCHARGE) shows current demand of 12 volt load. '''A.C. VOLTAGE''' - Voltmeter on left monitors LEG ONE while that on right monitors LEG TWO of 120 volt alternating current circuits.

'''D.C. AMPERAGE''' - Ammeter on left (labeled CHARGE) shows net current flow to or from batteries. Needle movement from the center of the gauge indicates discharge to the left and charge to the right. When parked, following highway travel , it is normal to see a needle position to the left of center even when plugged into shore power (or running generator). This will gradually diminish and should eventually show some movement to the right with coach loads turned off. Ammeter on right (labelled DISCHARGE) shows current demand of 12 volt load. '''A.C. VOLTAGE''' - Voltmeter on left monitors LEG ONE while that on right monitors LEG TWO of 120 volt alternating current circuits.

'''A.C. AMPERAGE''' -Ammeters show current flow in LEG ONE (left) and LEG TWO (right) of 120 volt alternating current circuits. Polarity Normal indicator (green), lit whenever the shoreline hookup is properly connected and grounded and line polarity is compatible with coach wiring and a Polarity Reversed indicator (red) which lights when hookup is reversed. A faulty ground connection is indicated in none of the LEDs is lighted.  

'''A.C. AMPERAGE''' -Ammeters show current flow in LEG ONE (left) and LEG TWO (right) of 120 volt alternating current circuits. Polarity Normal indicator (green), lit whenever the shoreline hookup is properly connected and grounded and line polarity is compatible with coach wiring and a Polarity Reversed indicator (red) which lights when hookup is reversed. A faulty ground connection is indicated in none of the LEDs is lighted.

 

 

The steering column area, figure 2-14 includes controls located on the steering column, and under the dash .  

The steering column area, figure 2-14 includes controls located on the steering column, and under the dash .  

'''12 VOLT MASTER SWITCH''' - This switch is hidden under the lower dash, to the right of the steering column.  Use this switch to shut off the 12 volt battery power to all circuits except the digital clocks, radio memory, monitoring panel functions, refrigerator controls, and burglar alarm.  

'''12 VOLT MASTER SWITCH''' - This switch is hidden under the lower dash, to the right of the steering column.  Use this switch to shut off the 12 volt battery power to all circuits except the digital clocks, radio memory, monitoring panel functions, refrigerator controls, and burglar alarm.  

'''ENGINE SHUTOFF CONTROL''' - (Only on California model) This control is located under the lower dash just to the left of the steering column. In the event that turning the ignition switch to OFF does not shut down the engine , pull this control (PULL TO STOP) fully outward. This operates a positive mechanical linkage to shut off fuel to the engine.  

'''ENGINE SHUTOFF CONTROL''' - (Only on California model) This control is located under the lower dash just to the left of the steering column. In the event that turning the ignition switch to OFF does not shut down the engine , pull this control (PULL TO STOP) fully outward. This operates a positive mechanical linkage to shut off fuel to the engine.

 

 

'''AIR HORN FOOT''' - Operates highway horns. Close to steering column.  

'''AIR HORN FOOT''' - Operates highway horns. Close to steering column.  

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===Controls and Indicators===

====Controls and Indicators====

 

 

'''Seat Controls''' - Electrically and air-operated six-way seat adjustments are built into the pilot's and co-pilot's seats. A typical control panel is shown in figure 2- 15. Three electric SEAT CONTROLS are used to control seat bench tilt, up-down and front-back seat movement , and seat back tilt. The SIDE SLIDE switch operates an air cylinder which locks the position of the slide mechanism beneath the seat. Press switch to disengage the seat slide lock, adjust side-to-side position, then release switch to re-engage lock mechanism. This switch must be kept LOCKED to secure the seat during travel. These seats may be rotated by releasing the lever underneath the seat base on the right side.  

'''Seat Controls''' - Electrically and air-operated six-way seat adjustments are built into the pilot's and co-pilot's seats. A typical control panel is shown in figure 2- 15. Three electric SEAT CONTROLS are used to control seat bench tilt, up-down and front-back seat movement , and seat back tilt. The SIDE SLIDE switch operates an air cylinder which locks the position of the slide mechanism beneath the seat. Press switch to disengage the seat slide lock, adjust side-to-side position, then release switch to re-engage lock mechanism. This switch must be kept LOCKED to secure the seat during travel. These seats may be rotated by releasing the lever underneath the seat base on the right side.  

Proper operation and maintenance are key factors in determining the useful life and operating economy of a diesel engine. Follow these directions for trouble-free, economical operation.  

Proper operation and maintenance are key factors in determining the useful life and operating economy of a diesel engine. Follow these directions for trouble-free, economical operation.  

To Start Engine Detroit Diesel Engines will start at temperatures above 0 degrees F ( - 12 degrees C) without using a starting aid. However, for colder temperatures it may be necessary to activate the engine block heater (120 volt ac-operated) to heat the crankcase oil. The ENGINE BLOCK HEATER is controlled by the battery heater breaker. Remember to set the breaker OFF when the heater is no longer needed.  

==== To Start Engine ====

Detroit Diesel Engines will start at temperatures above 0 degrees F ( - 12 degrees C) without using a starting aid. However, for colder temperatures it may be necessary to activate the engine block heater (120 volt ac-operated) to heat the crankcase oil. The ENGINE BLOCK HEATER is controlled by the battery heater breaker. Remember to set the breaker OFF when the heater is no longer needed.  

#Place transmission in NEUTRAL.

#Place transmission in NEUTRAL.

With the vehicle stopped, apply the parking brake and place the transmission shift lever in NEUTRAL. Turn the ignition switch to the OFF position. This shuts off the fuel supply to the engine.  

With the vehicle stopped, apply the parking brake and place the transmission shift lever in NEUTRAL. Turn the ignition switch to the OFF position. This shuts off the fuel supply to the engine.  

===Using the Allison Transmission Brake /Retarder===

====Using the Allison Transmission Brake /Retarder====

Your Wanderlodge is equipped with a transmission brake/retarder for your safety and driving convenience. The retarder system is energized by an OFF/ON switch on the shifter panel (see figure 2-5). There are two methods of activating the system (putting it to work):  

Your Wanderlodge is equipped with a transmission brake/retarder for your safety and driving convenience. The retarder system is energized by an OFF/ON switch on the shifter panel (see figure 2-5). There are two methods of activating the system (putting it to work):  

'''Cautions:''' Apply and operate the retarder with engine at closed throttle only. Do Not use the retarder when road surfaces are slippery. Do not apply retarder control or de-energize the system at the master control switch. Observe transmission and engine temperature limits at· all times. Select the lowest possible transmission range to increase the cooling system capacity and total retardation available. In the event of overheating, decrease vehicle speed to reduce retardation power requirements . Observe the retarder "ALERT LIGHT" to ensure that the vehicle control system is functioning properly.  

'''Cautions:''' Apply and operate the retarder with engine at closed throttle only. Do Not use the retarder when road surfaces are slippery. Do not apply retarder control or de-energize the system at the master control switch. Observe transmission and engine temperature limits at· all times. Select the lowest possible transmission range to increase the cooling system capacity and total retardation available. In the event of overheating, decrease vehicle speed to reduce retardation power requirements . Observe the retarder "ALERT LIGHT" to ensure that the vehicle control system is functioning properly.  

===Trailer Hitch===

====Trailer Hitch====

Hitch capacity is 10,000 pounds tow and 1,000 pounds tongue weight. Note Trailer hitch ball capacity is 6,000 pounds. Nut must be torqued to 200 ft.- lb. Towing Two towing eyes are provided behind the upper part of the generator door. Remove the two door side covers (panels) for access.  

Hitch capacity is 10,000 pounds tow and 1,000 pounds tongue weight. Note Trailer hitch ball capacity is 6,000 pounds. Nut must be torqued to 200 ft.- lb. Towing Two towing eyes are provided behind the upper part of the generator door. Remove the two door side covers (panels) for access.  

'''''Caution''''' Do not tow a vehicle equipped with Allison automatic transmission unless the drive shaft has been removed, or the rear wheels raised from the ground. Do not attempt to tow unit by front axle or cross-member. Damage to wiring and/ or air lines can result because of proximity of these items to front crossmember/ Do not tow with generator tray extended. Do not tow by the bumpers. Air pressure is required to release brakes.  

'''''Caution''''' Do not tow a vehicle equipped with Allison automatic transmission unless the drive shaft has been removed, or the rear wheels raised from the ground. Do not attempt to tow unit by front axle or cross-member. Damage to wiring and/ or air lines can result because of proximity of these items to front crossmember/ Do not tow with generator tray extended. Do not tow by the bumpers. Air pressure is required to release brakes.  

===Transmission Operation===

====Transmission Operation====

 

====8V92Engine====

The Detroit Diesel Allison transmission (8V92 engine) provides four forward ranges and one in reverse. Speed selection is provided through the transmission shift panel. The selector must be in N (neutral) position when the engine is started . If the engine can start in any other position , the neutral start switch deficiency should be corrected as soon as possible. Use D position for all normal driving conditions so that the coach begins moving in first gear and upshifts automatically into 2nd, 3rd , and 4th gears. As the coach slows , the transmission automatically downshifts to the correct gear. Use a low gear 2 or 3 when road, load or traffic conditions make it desirable to restrict automatic shifting to a lower range; or use the Allison transmission retarder , as .J previously described . Use 1 or 2 when pulling through mud and snow or driving up steep grades (See table 8-3 for gradeability) . The vehicle should be completely stopped before shifting into reverse.  

The Detroit Diesel Allison transmission (8V92 engine) provides four forward ranges and one in reverse. Speed selection is provided through the transmission shift panel. The selector must be in N (neutral) position when the engine is started . If the engine can start in any other position , the neutral start switch deficiency should be corrected as soon as possible. Use D position for all normal driving conditions so that the coach begins moving in first gear and upshifts automatically into 2nd, 3rd , and 4th gears. As the coach slows , the transmission automatically downshifts to the correct gear. Use a low gear 2 or 3 when road, load or traffic conditions make it desirable to restrict automatic shifting to a lower range; or use the Allison transmission retarder , as .J previously described . Use 1 or 2 when pulling through mud and snow or driving up steep grades (See table 8-3 for gradeability) . The vehicle should be completely stopped before shifting into reverse.  

===Driving Tips===

====Driving Tips====

==== '''Accelerator Control''' ====

====='''Accelerator Control'''=====

Foot pressure on the accelerator pedal influences the automatic upshifting or downshifting within each driving range . When the pedal is fully depressed against the floor pedal stop , the transmission automatically upshifts near the recommended governed speed of the engine . A partially depressed position of the pedal causes the upshifts to occur sooner at a lower engine speed. This throttle-modulation method provides the accurate shift spacing and control necessary for maximum performance.

Foot pressure on the accelerator pedal influences the automatic upshifting or downshifting within each driving range . When the pedal is fully depressed against the floor pedal stop , the transmission automatically upshifts near the recommended governed speed of the engine . A partially depressed position of the pedal causes the upshifts to occur sooner at a lower engine speed. This throttle-modulation method provides the accurate shift spacing and control necessary for maximum performance.

==== '''Downshift Control''' ====

====='''Downshift Control'''=====

The transmission can be downshifted or upshifted , even at full throttle, and, although there is no speed limitation on upshifting , there is a limitation on downshifting and reverse . Good driving practices indicate that downshifting should be avoided when the vehicle is over the maximum speed attainable in the next lower gear . Allison transmissions incorporate downshift inhibitors to prevent harmful shifts when the vehicle is traveling too fast for the next lower gear. If downshifts are attempted at excessive speeds , the inhibitors prevent the selected downshift until the vehicle reaches an acceptable speed.  

The transmission can be downshifted or upshifted , even at full throttle, and, although there is no speed limitation on upshifting , there is a limitation on downshifting and reverse . Good driving practices indicate that downshifting should be avoided when the vehicle is over the maximum speed attainable in the next lower gear . Allison transmissions incorporate downshift inhibitors to prevent harmful shifts when the vehicle is traveling too fast for the next lower gear. If downshifts are attempted at excessive speeds , the inhibitors prevent the selected downshift until the vehicle reaches an acceptable speed.  

==== '''Transmission Oil Temperature''' ====

====='''Transmission Oil Temperature'''=====

Extended operation at low vehicle speeds, with the engine at full throttle , can cause excessively high temperature in the transmission . These temperatures may tend to overheat the engine cooling system as well as cause possible damage to the transmission. If excessive temperature is indicated by the engine coolant temperature gauge, stop the vehicle and determine the cause. If the cooling system appears to be functioning properly, the transmission is probably overheated. Shift to N and accelerate the engine to 1,200 to 1,500 RPM . This should reduce the oil sump temperature to operating level within a short time. If high temperatures persist , stop the engine and have the overheating condition investigated by service personnel.  

Extended operation at low vehicle speeds, with the engine at full throttle , can cause excessively high temperature in the transmission . These temperatures may tend to overheat the engine cooling system as well as cause possible damage to the transmission. If excessive temperature is indicated by the engine coolant temperature gauge, stop the vehicle and determine the cause. If the cooling system appears to be functioning properly, the transmission is probably overheated. Shift to N and accelerate the engine to 1,200 to 1,500 RPM . This should reduce the oil sump temperature to operating level within a short time. If high temperatures persist , stop the engine and have the overheating condition investigated by service personnel.  

'''Caution''' Do not operate the engine for more than 30 seconds at full throttle with the transmission in gear and the unit stationary. Prolonged operation of this type will cause the transmission oil temperature to become excessively high and may result in severe overheat damage to transmission components . Do not leave transmission in drive for more than 5 minutes while stationary because of heat damage.  If the transmission overheats during normal operation , check transmission oil level.   

'''Caution''' Do not operate the engine for more than 30 seconds at full throttle with the transmission in gear and the unit stationary. Prolonged operation of this type will cause the transmission oil temperature to become excessively high and may result in severe overheat damage to transmission components . Do not leave transmission in drive for more than 5 minutes while stationary because of heat damage.  If the transmission overheats during normal operation , check transmission oil level.   

===General Information===

=====General Information - Detroit Diesel Engines=====

 

===Detroit Diesel Engines===

'''''Caution''''' Cooling fan is driven by hydraulic pressure. Flow is controlled electrically by a thermostat which senses engine coolant temperature. Any time the engine is running the fan may engage and start without warning. Also, on hydraulically driven fans, the fan may start and run for several seconds when the engine is shut off or if electrical power is interrupted. Shut off engine and wait for fan to stop before servicing. When inspecting or servicing engine or other components in engine compartment the engine control switch must be placed in OFF or REAR position to prevent starting of the engine from the driver's area.  

'''''Caution''''' Cooling fan is driven by hydraulic pressure. Flow is controlled electrically by a thermostat which senses engine coolant temperature. Any time the engine is running the fan may engage and start without warning. Also, on hydraulically driven fans, the fan may start and run for several seconds when the engine is shut off or if electrical power is interrupted. Shut off engine and wait for fan to stop before servicing. When inspecting or servicing engine or other components in engine compartment the engine control switch must be placed in OFF or REAR position to prevent starting of the engine from the driver's area.  

Check crankcase oil level before starting and when refueling. Always check oil level with engine stopped . The dipstick has 2 markings , FULL and LOW , and the distance between them represents 4 quarts (3.8 litre) for the 6V92 and 6 quarts (5.75 litre) for the 8V92 engine . Refer to table 8-2 for recommended oil. • Check (with engine stopped) drive belts for cracks, breaks and frayed edges. While checking belts, look for oil, water or fuel leaks. • Check (with engine stopped) for water in the fuel. Drain a cupful of fuel from the bottom of the tank to remove water or sediment. Fill fuel tanks after completing a run. Partially-filled tanks will collect moisture if the coach is allowed to sit for an appreciable length of time. Use number 2-D diesel fuel (with a minimum Cetane number of 40). Keep fuel clean . Inspect Racor filter bowl periodically and observe WATER-IN-FUEL indications on the dash gauge. Remove and clean filter bowl as necessary . Number 1-0 diesel fuel may be used in cold temperatures or when operating in altitudes above 5,000feet. • Check coolant level (with engine cool and off). Fill to the proper level with water and permanent-type anti-freeze. Use clean water that is low in scale forming minerals, not softened water. Leave space for expansion. (Note that Nalcool 2000 is compatible only with ethylene-glycol base coolants.)  

Check crankcase oil level before starting and when refueling. Always check oil level with engine stopped . The dipstick has 2 markings , FULL and LOW , and the distance between them represents 4 quarts (3.8 litre) for the 6V92 and 6 quarts (5.75 litre) for the 8V92 engine . Refer to table 8-2 for recommended oil. • Check (with engine stopped) drive belts for cracks, breaks and frayed edges. While checking belts, look for oil, water or fuel leaks. • Check (with engine stopped) for water in the fuel. Drain a cupful of fuel from the bottom of the tank to remove water or sediment. Fill fuel tanks after completing a run. Partially-filled tanks will collect moisture if the coach is allowed to sit for an appreciable length of time. Use number 2-D diesel fuel (with a minimum Cetane number of 40). Keep fuel clean . Inspect Racor filter bowl periodically and observe WATER-IN-FUEL indications on the dash gauge. Remove and clean filter bowl as necessary . Number 1-0 diesel fuel may be used in cold temperatures or when operating in altitudes above 5,000feet. • Check coolant level (with engine cool and off). Fill to the proper level with water and permanent-type anti-freeze. Use clean water that is low in scale forming minerals, not softened water. Leave space for expansion. (Note that Nalcool 2000 is compatible only with ethylene-glycol base coolants.)  

===Racor Fuel Filter===

=====Racor Fuel Filter=====

A Racor fuel filter is incorporated in the diesel fuel supply line and processes the fuel supply for maximum purity . The fuel filter also includes a built-in preheater, which operates from the 12-volt battery supply and a water sensor, which lights a dash indicator when the water level in the filter bowl is high enough to require drainage.  

A Racor fuel filter is incorporated in the diesel fuel supply line and processes the fuel supply for maximum purity . The fuel filter also includes a built-in preheater, which operates from the 12-volt battery supply and a water sensor, which lights a dash indicator when the water level in the filter bowl is high enough to require drainage.  

===Fuel Line Heater===

=====Fuel Line Heater=====

A thermostatically controlled fuel line heater is located between the tank and the engine.  

A thermostatically controlled fuel line heater is located between the tank and the engine.  

===Leveling Jacks===

=====Leveling Jacks=====

[[File:Leveling Jack Control Diagram.png|right|frameless|380x380px]]

[[File:Leveling Jack Control Diagram.png|right|frameless|380x380px]]

The motorhome is optionally equipped with, four heavy-duty leveling jacks; one at each corner of the chassis. Because the rear leveling jacks must extend or retract a greater distance than the front jacks, their operating cycle takes appreciably longer. Overall system operation is controlled and monitored at the leveling jack controls, while each jack is independently operated by one of four respective EXTEND-RETRACT levers located on the floor to the left of the driver, figure 2-20. A dash indicator and a buzzer (when ignition switch is on) provide visual and audible signals to show that the associated leveling jacks are not stowed to a safe travel position.

The motorhome is optionally equipped with, four heavy-duty leveling jacks; one at each corner of the chassis. Because the rear leveling jacks must extend or retract a greater distance than the front jacks, their operating cycle takes appreciably longer. Overall system operation is controlled and monitored at the leveling jack controls, while each jack is independently operated by one of four respective EXTEND-RETRACT levers located on the floor to the left of the driver, figure 2-20. A dash indicator and a buzzer (when ignition switch is on) provide visual and audible signals to show that the associated leveling jacks are not stowed to a safe travel position.

'''''Caution Severe injury or death may result. DO NOT use the leveling system for changing tires or working under the vehicle. Keep the rear wheels in firm contact with the ground with the parking brake set. With the leveling jacks extended, there is a possibility the vehicle may move either toward the front or the rear.'''''  

'''''Caution Severe injury or death may result. DO NOT use the leveling system for changing tires or working under the vehicle. Keep the rear wheels in firm contact with the ground with the parking brake set. With the leveling jacks extended, there is a possibility the vehicle may move either toward the front or the rear.'''''  

====Operating the leveling jacks====

======Operating the leveling jacks======

'''Note''' 12 Volt master switch must be on to operate leveling jacks.  

'''Note''' 12 Volt master switch must be on to operate leveling jacks.