Changes

'''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 Controls ====

===Leveling Jacks ===

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.  

# Set LEVEL MASTER switch (see figure 2-20) to ON position. Note that the LEVEL WARNING indicator will light. LEVEL SYSTEM indicators LF RF. LR and RR are lit only when the respective corner of the coach is low.  

#Set LEVEL MASTER switch (see figure 2-20) to ON position. Note that the LEVEL WARNING indicator will light. LEVEL SYSTEM indicators LF RF. LR and RR are lit only when the respective corner of the coach is low.

# De-pressurize the tag axle by setting TAG DUMP switch to DUMP : de-pressurize front and rear axle by setting associated SUSP. DUMP switch to DUMP.  '''''Caution''''' Always dump tag axle air pressure before the front and rear suspension and pressurize it after the front and rear suspension to avoid damage to tag axle suspension

#De-pressurize the tag axle by setting TAG DUMP switch to DUMP : de-pressurize front and rear axle by setting associated SUSP. DUMP switch to DUMP.  '''''Caution''''' Always dump tag axle air pressure before the front and rear suspension and pressurize it after the front and rear suspension to avoid damage to tag axle suspension

# Lower the front leveling jacks by setting the LF and RF floor controls to EXTEND position . As soon as the jacks contact the ground , as indicated by the characteristic landing gear thump , release the respective control lever to prevent further jack movement.

#Lower the front leveling jacks by setting the LF and RF floor controls to EXTEND position . As soon as the jacks contact the ground , as indicated by the characteristic landing gear thump , release the respective control lever to prevent further jack movement.

# Operate the EXTEND-RETRACT levers for 'the rear leveling jacks (LR and RR) as necessary to level the rear end of the coach. The blue LR and RR LEVEL SYSTEM indicators will extinguish when the respective corners are leveled .  

#Operate the EXTEND-RETRACT levers for 'the rear leveling jacks (LR and RR) as necessary to level the rear end of the coach. The blue LR and RR LEVEL SYSTEM indicators will extinguish when the respective corners are leveled .

# Operate the EXTEND-RETRACT levers for the front leveling jacks (LF and RR) as necessary to level the front of the coach.

#Operate the EXTEND-RETRACT levers for the front leveling jacks (LF and RR) as necessary to level the front of the coach.

# To re-stow the leveling jacks prior to moving the coach , start engine to initiate air compressor operation , re-pressurize the air suspension system for the front, rear and tag axle by setting the associated DUMP switches to the FILL (up) position, in the following sequence. First pressurize front and rear axle suspensions by setting the associated DUMP switch to FILL position; then pressurize tag axle by setting the TAG DUMP switch to FILL position. Check that AIR PRESSURE REAR and AIR PRESSURE FRONT gauges each read between 100 psi and 120 psi; check that TAG AXLE PRESSURE gauge reads 50 psi.

#To re-stow the leveling jacks prior to moving the coach , start engine to initiate air compressor operation , re-pressurize the air suspension system for the front, rear and tag axle by setting the associated DUMP switches to the FILL (up) position, in the following sequence. First pressurize front and rear axle suspensions by setting the associated DUMP switch to FILL position; then pressurize tag axle by setting the TAG DUMP switch to FILL position. Check that AIR PRESSURE REAR and AIR PRESSURE FRONT gauges each read between 100 psi and 120 psi; check that TAG AXLE PRESSURE gauge reads 50 psi.

# When the air suspension is once again stabilized, pull all four leveling jacks controls back to the RETRACT (locked) position. The red warning indicator will extinguish when the jacks are in the stowed position.  '''Note''' If the jacks are not withdrawn before driving away, the buzzer will sound.  '''Caution''' Do not drive the coach unless the tag axle is correctly pressurized to assure even weight distribution. There must be pressure in Tag Axle air bags to prevent flat spotting of Tag Axle tires during brake application.  

#When the air suspension is once again stabilized, pull all four leveling jacks controls back to the RETRACT (locked) position. The red warning indicator will extinguish when the jacks are in the stowed position.  '''Note''' If the jacks are not withdrawn before driving away, the buzzer will sound.  '''Caution''' Do not drive the coach unless the tag axle is correctly pressurized to assure even weight distribution. There must be pressure in Tag Axle air bags to prevent flat spotting of Tag Axle tires during brake application.

# Set LEVEL MASTER switch to OFF position. This completes one full operating cycle tor the leveling jacks system.

#Set LEVEL MASTER switch to OFF position. This completes one full operating cycle tor the leveling jacks system.