1989 Wanderlodge Wide Body Pusher (WB)

Year	1989
Type	Wanderlodge Wide Body Pusher
Engine	Detroit Diesel 8v92TA-475hp with DDEC
Suspension	Ridewell RAD-227WB Air Suspension
Generator	Kohler 12.5kW Diesel
Tires	Michelin 12R22.5
Transmission	Allison MTB 748 4-Speed with Retarder
Breaks	Full Air
Bathrooms	Walk Thru Side Bath
HVAC
A/C	13,500 BTU - 3 Rooftop 18,00 BTU - 1 Automotive(Dash)
Heating
Tankage
Diesel Fuel	300 gal.
Fresh Water	116 gal.
Gray Water	105 gal.
Waste Water	105 gal.
Propane (LP)	45 gal.
Dimensions
GVWR:	40,000 lbs
Length:	40'
Width:	102"

Operation

This section provides information on the opera­tion and function of the controls, indicators and gauges located in the pilot/co-pilot compartment that are used in connection with the coach automo­tive systems. Figure 2-1 illustrates the pilot/co-pilot compartment, high-lighting the instrumentation and panels covered in this section.

Instrumentation

All essential operating controls and gauges used to monitor and control associated engine, generator and coach systems are located conveniently on and adjacent to the electroluminescent dash panels, figure 2-2.

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.

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.

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

1. Engine Water Temperature - Normal water temperature should be between 180° and 210° for safe operation.
   • CAUTION: If the Engine Temperature gauge indi­cates excessively high temperatures, the engine may be over-heating and should be stopped to prevent damage. Allow the engine to cool before check­ ing the radiator coolant level.
2. Engine Oil Temperature - Gauge-Gives a constant reading of the engine oil in the supply line from the pump. The normal operating temper­ature is from 200°F to 250°F. If the temperature goes over 250° the engine may be low on oil or there is overheating of the cooling system.
   • CAUTION: Your Wanderlodge is designed to op­erate at ambient temperatures up to 100°F with no problems. If temperatures greater than 100°F are encountered, the operator must closely observe engine water and oil temperature and trans­ mission oil temperature to avoid over­ heating conditions. If overheating con­ditions occur at ambient temperatures less than 100°F, the cooling system must be checked and problem cor­rected.
3. Engine Oil Pressure - Indicates the pressure of the oil, not the amount of oil in the engine reservoir. This gauge will normally read be­ tween 50 and 70 psi during cruising speeds; and drop to a minimum of 5 psi when the engine is idl­ing.
   • CAUTION: No oil pressure, or low oil pressure readings (below 25 psi) when engine is operating at cruising speeds are trouble indications! Do Not Operate the Engine Under These Condi­tions!
4. DC Volts - Registers the actual voltage at the coach batteries. With the engine running, gauge should read14 volts (+ or - 0.5).
5. Alternator Charging Amps - Shows total charging current in amperes. With the engine run­ ning, total alternator output is shown. When parked, with a source of 120 volt ac, (outside power or generator), the gauge will show total output of the battery chargers.
6. Tax Axel Pressure - The tag axle sus­pension pressure is factory set at 60 psi on WB-38 & 40 coaches
   • CAUTION: Before driving check gauge to make sure there is pressure in the tag axle air bags. This is critical for proper coach axle weight distribution.
7. Air Pressure Front/Rear - The Dual Air service Brake Pressure systems are engine operated and supply independent brake system air pressure for front and rear service brakes and the parking brake. During normal oper­ation, each air pressure gauge reading will build up to 100 psi to 120 psi shortly after the engine is started. Note that, as a safety feature, the parking brake cannot be released until air pressure read­ings are at least 65 psi.
8. Fuel Level - Indicates the amount of diesel fuel remaining in the 300 gallon fuel tank. Note that the 12.5 kw generator also gets its fuel supply from the 300 gallon tank. This gauge reads only when the ignition switch is in ON or ACCES­SORY position. As a precaution against generator operation draining the fuel supply, the generator fuel pickup is shorter than the engine pickup. Sep­arate fuel filters are provided for each fuel line.
9. Low Fuel Light - When this light comes on it is an indication that the operator should be looking for the nearest refueling station.
10. Low Air Warning Indicator - This light is associated with a buzzer. These warn the driver that there is an insufficient supply of air (65 psi or less) to properly operate the coach. If the air pressure is low, when the ignition key is turned on, the light and buzzer will come on immediately. Both warnings will continue until the air pressure is built back up, or the ignition key is turned off.
11. Burglar Alarm Switch - There are two switches that turn the Burglar Alarm on and off. The switch on the dash is used when you are inside the coach. The weather proof key switch, outside the coach next to the entrance door , is used when you are going to be leaving your coach for awhile. Note that both switches operate independently of one another. If the Burglar Alarm is turned on at the dash, then it must be turned off at the dash. The outside switch works on the same principle.
12. A/T (Anti-Theft) - deactivates the starting system for protection against unauthorized cranking and theft.
13. Accessory - These BLANK positions may be used for the installation of additional switches and indicator lights for customer add on equipment.
    • CAUTION: Use existing panel holes for installation of additional controls or indicators. Drilling new holes will destroy the electroluminescent features.
14. 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

1. Speedometer - Indicates speed and ac­ cumulated mileage (odometer). This is a solid­ state electronic monitor, with an RPM sensor lo­cated at the right drive axle brake drum
2. Tachometer / Hour Meter - Indicates actual engine RPM (Revolutions Per Minute) when scale (0-25) reading is multiplied by 100. Idle RPM should be 600 and full load (uphill) 2100 RPM. HOUR METER shows number of hours engine has been in operation.
3. Transmission Retarder Temperature - Measures temperature of the transmission retar­der oil. If the gauge registers a temperature over the 330°F maximum safety range, reduce use of transmission retarder. See information on use of transmission retarder later in this section.
4. High Beam - The Blue Bird logo is illuminated when high beams are selected using steering column switch.
5. Water in Fuel - This light  comes on when there is an excess of water in the bottom of the fuel tank
6. Suspension Dump - Light flashes to tell you that the suspension system has little or no air, and that the suspension needs to be pressurized before the coach is driven.
7. Level Warning - This light comes on when any of the four (4) leveling jacks is not fully retracted.
8. Turbo Pyrometer - Registers the tem­perature of the exhaust gas output of the Turbo. The correct temperature of the exhaust should be around 740°F at maximum power.
9. Rear Landing Light Switch - At the ON position this switch turns ON the landing lights in the front right and left panels just behind the front tires. These lights shine toward the rear of the coach so are called Rear Landing Lights. Note that a small blue indicator lights when the switch is ON.
10. Front Landing Light Switch - To turn on the front Landing lights, located in the rear side panels just in front of the rear wheels, push this switch to the ON position. The indicator next to the switch should be lit when the switch is on.
11. Rear Parking Light Switch -This switch controls the on-off operation of the rear parking lights (rectangular halogen lights above the rear bumper) when transmission selector lever is in R An indicator next to the switch lights when the rear parking lights are on.
12. Comp. Light Master - When this switch in the ON position provides power to all of the exterior compartment light switches. As each compartment door is opened, the light automatically comes on; closing the door turns the light off.
13. Radar Master - Turns on power to the Radar
14. Heat - To turn on the heater blower for the pilot's area press this switch to either the HI- or LOW position. Note: when the front heat control is in cool position the heat switches (14) and (17) can be used to provide cool air circu­lation by turning on the blowers.
15. Mirror Heat - This switch turns on a thermostatically controlled heater in the right and left outside mirrors (convex mirrors excluded ). With the switch ON the Mirror Heaters will automatically come on to defog the mirrors.
16. LP Heat - When in the ON posi­tion, 12v. power is supplied to the LPG furnaces.
17. Heat - To turn on the heater blower for the co-pilot's area press this switch to either the HI- or LOW position. Note that when the front heat control is in cool position the heat switches (14) and (17) can be used to provide cool air circu­lation by turning on the blowers.
18. Defrost - Turns on the blower for defrosting or defogging the front windshield. Set to HI-or LOW speed as desired.
19. Aux Battery - When this switch is pressed, a jumper solenoid connects the generator and coach batteries together (in paral­lel) to provide extra power for cranking the generator or coach. Releasing the switch im­mediately isolates the two battery systems.
20. Air Level Master - Allows you to level the coach to a certain extent using the air sus­pension. This is an optional system and should only be used for short periods of time.
21. Horn Selector - Allows selec­tion of the air or electric horns when the steering wheel horn button is depressed.
22. Fan Override - This switch operates the engine cooling fan in the engine compartment. Normally, this fan will operate at 125 to 400 RPM from an engine RPM of idle to 2100. If the coolant temperature reaches 195°F, the fan will be ther­mostatically controlled to run at 1800 RPM. To override the thermostat turn the Fan Override switch ON, and the engine cooling fan will turn 1800 RPM continuously at any temperature.
23. Air Compressor Master - This switch operates the auxiliary air compressor (optional equipment) which is a 120 vac operated back up air compressor.
24. Backup Alarm - This switch turns the back-up alarm buzzer off.
25. Suspension Dump - This switch controls the inflation of the air suspension systems for the front and rear axles. Move switch to the right to dump the bags.
26. Tax Axel Dump - In UP position tag axle air suspension is pressurized as indicated on dash gauge TAG AXLE PRESSURE . When switch is moved right pressure in tag axle is dumped.
    • Note: SUSP. DUMP accessory warning light is lit: set switch to UP posi­tion to re-inflate the air bags before driving away. (System air pressure must be at least 65 psi.)
    • Your motorhome is equipped with air suspen­sion bags which cushion the front, rear and tag axles. Dumping these air bags when the vehicle is parked allows the rubber bumpers to come to­gether and eliminate vehicle springiness. Two switches control dumping and filling of the respec­tive air bags. The SUSP. DUMP switch controls the front and rear axle suspension; the TAG DUMP switch controls the tag axle only. Note: The accessory air tank must contain at least 65 PSI pressure for the air switch to function. The accessory air tank pressure does not register on the dash air pressure gauges.
    • Moving the SUSP. DUMP switch to the UP posi­tion applies air pressure to three air pilot-operated valves on the suspension system. Two of these valves are located on the rear axle; and one is lo­cated on the front axle. The pilot air shifts the valves, cutting off the air supply to the air bags and allows the air in the bags to escape. After the sus­pension system has been dumped, and the igni­tion is turned on, a warning pilot light is illuminated on the dash to warn the driver that the system is dumped and not to drive the vehicle until the SUSP. DUMP switch is set to the up position. Note: If the leveling jacks are to be used while the coach is parked, the jacks must be lowered to level the vehicle before the air bags are dumped. If the air bags are dumped before the jacks are down, the vehicle is too low for the jacks to unfold into lifting position properly. This could damage the jacks. When dumping, the tag axle is dumped first, then the front and rear axles. However, when pressurizing, the front and rear axles are pressurized first, then the tag axle.
27. Wiper Delay - Knob adjusts wiper speed from 2 to 20 sweeps per minute when intermittent operation is selected at steering column switch lever.
28. Hazard Switch - This switch turns on the emergency flashers. When switch is used both turn signals will flash in unison.
29. The Horn (Figure 2-4) - This corner of the dash has 3 different switches for use with the musi­cal horn
    • The SELECTOR switch incorporates 2 thumb­ wheels for selecting the tune to be played. Use The Horn manual to select a tune. Then set the thumb-wheels to the corresponding numbers or number and letter. Note: that if a tune is playing, making a new selection on the selector switch will not affect the tune playing.
    • The POWER switch provides power to the mu­sical horn. When this switch is turned ON the horn will immediately start playing the tune that corres­ponds to the digits on the selector switch.
    • The PLAY switch (momentary) resets the horn to the beginning of tune chosen by the Selector switch. If the PLAY switch is pressed while a tune is playing, that tune will stop instantly and the horn will reset to the beginning of the tune that corres­ponds to the digits on the SELECTOR.
30. Auxiliary Switch - When set to the EXTENDED position, activates a relay automatically locking the outside entry step in the out position. The indicator light comes on when the ignition switch is turned on to remind you that you need to retract the step before proceeding.
31. Low Washer Fluid Light - Light indicates when there is approximately 1 /4 contained in the fluid reservoir.
32. Right Turn Indicator - When the turn signal lever , (steering column control section), is pushed up into the right turn position this indicator flashes in conjunction with the outside directional lights . The right cornering light will come on continuously if the headlights or the parking lights are turned on while the turn signal lever calls for a right turn. The indicator , along with the left turn indicator and all outside directional lights, flash in unison when the HAZARD switch (item 28) is pressed to the on position .
33. Turbo Boost Gauge - Registers the psi of the Turbo Compressor outlet. The gauge should read a maximum of 23.2 psi at maximum power.
34. Transmission Oil Temperature Gauge - Monitors and gives constant temperature readings of the transmission oil. Maximum allowable is 330°F.
35. Left Turn Indicator-When the turn signal lever is pulled down into the left turn position , this indicator flashes in conjunction with the outside directional lights. The left cornering light will come on continuously if the headlights or the parking lights are turned on while the turn signal lever calls for a left turn.
36. Aisle Lights - This switch allows you to turn on or off the fluorescent aisle lights from the pilot 's chair.
37. Dash Dimmer - Will only operate when the headlight switch is on. The background lighting (electroluminescent) for the dash can be brightened by turning counter-clockwise and dimmed by turning clockwise.
38. 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

1. Transmission Shift Selector - Fig­ure 2-5 shows the selector for the 8V92 engine. This is the push button shift selector made avail­ able with the Allison Transmission Electronic Con­trol (ATE C). With ATEC, shifts are more accurate and positive than those obtainable with conven­tional hydraulic controls. ATEC makes it possible to precisely match the optimum fuel economy/shift curve relationship. Only four speeds are required with this system. See Diesel Engine/Transmission Operation later in this section for detailed descrip­tion.
2. Transmission Retarder - Provides power to Transmission Retarder/Brake System. The adja­cent indicator lights when the retarder is opera­tional. Use of RETARDER HAND CONTROL will be covered later in this chapter.
3. Accessory Position - These blank posi­tions may be used for the installation of additional switches and indicator lights for customer add on equipment.
   • Caution: Use existing panel holes for installation of additional controls or indicators. Drilling new holes will destroy the elec­troluminescent features.
4. Marker Lights - Press this switch to ON to turn on the clearance, side marker and identification lamps located on the top sides and ends of the coach. This switch may also be flipped on and off to flash the marker lights as a courtesy signal.
5. Driving Lights -  The  driving lights are mounted behind the front bumper in a re­tracted position. When the switch is energized the driving lights are lowered into position (if the sus­pension is at ride height). The driving lights do not come on unless the high beam light switch is ener­gized and the driving lights are in the down position. The driving lights go out when the lights are switched to low beam or when the driving lights switch is turned off. When the driving lights switch is turned off the driving lights retract back to the stored position.
6. Cruise Control - These three switches operate in the following manner: The switch on the left turns the cruise control on or off. The switch on the right locks the cruise control in on the desired cruising speed and permits resetting at a lower speed following a previous setting. The switch in the middle permits returning to cruising speed fol­lowing disengagement by stopping and obtaining a higher cruising speed.
   • Note: The coach must be traveling at least 35 MPH before the cruise control will oper­ate properly. When the desired speed is reached, press the On-Off switch to the On position, then press the Set-Coast switch to the Set position and hold for two seconds before releasing. The coach should automatically remain at that speed. If a lower cruise speed is desired, press the Set-Coast switch to the Coast position and hold until the de­ sired cruising speed is obtained. Release the switch immediately. The coach should remain at the new speed. Following disengagement of the cruise control by breaking the previously set cruising speed may be obtained by depressing the Resume-Accel switch to the Resume position for two seconds. Note that the coach should be at or above 35 MPH before attempting the Resume function. In addi­tion, if the ignition switch has been turned off, the previous cruise speed will be erased from memory and the new cruise speed will be that speed when the Resume switch was pressed. If a higher cruising speed is desired and the cruise is enabled, press the Resume-Acee! switch to the Accel position. The coach will begin to accel­erate. When the higher desired cruising speed is obtained, immediately release the Accel switch. The coach should remain at the new speed.
7. Engine Monitor Switches High Idle - This switch when turned to On, in­ creases the engine idle speed to approximately 1100 RPM. This will provide a faster engine warm­ up and also provide better cooling when stopped in traffic with chassis AIC on.
   • Engine Stop Override - This switch momentarily overrides DDEC engine shutoff system.
   • Stop Engine Light - Indicates when a po­tential engine damaging condition has been de­tected .
   • Check Engine Light - Indicates that a prob­lem has occurred.
   • Engine Test - This switch is to check the system for problems.
8. Transmission Check Light and TEST SWITCH - ATEC has a built-in diagnostic system . If any problem should develop the Check Trans. light will come on. A Detroit Diesel Allison service facility will immediately be able to determine the cause by push­ing the momentary Trans. Test rocker switch. The Check Trans. light will then blink out the code for the problem.
9. Cockpit Light - This switch con­trols On-Off ope ration of the fluorescent lights.
10. AC/Heat Master - These switches allow the driver to control roof air con­ditioners or the electric heaters.

Upper Right Hand Dash Panel

1. Lighter - Depress to heat the element; pops out when hot.
2. Security Lock - Dual switches used to lock and unlock the deadbolt lock on the entrance door. A switch is also located on bed­ room control panel.
3. Cold Start - When switch is pressed to on it sends a timed pulse of ether into the air intake of engine to help starting in cold weather.
4. Left Vent and Right Vent - Operate the air cylinder controlled air vents to direct fresh air to the pilot and co-pi lot areas.
5. Compact Disk Player - Space available for optional disc player with premium sound

Lower Right Hand Dash Panel

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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Maintenance Data

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Manuals & Reference Material