For easier inspection the transmission should be kept clean. Make periodic
checks for loose bolts and leaking fluid lines. Check the condition of the
electrical harnesses regularly. Check the engine cooling system occasionally
for evidence of transmission fluid which would indicate a faulty oil cooler.
Report any abnormal condition to an Allison dealer.
Prevent Major Problems:
Help the WTEC III control system oversee the operation of the transmission.
Minor problems can be kept from becoming major problems if an Allison
Transmission distributor or dealer is notified when one of these conditions
occur:
1. The shifting feels odd.
2. The transmission leaks fluid.
3. There are unusual transmission-related sounds (changes in sound
caused by normal engine thermostatic fan cycling, while climbing
a long grade with a heavy load, have been mistaken for
transmission-related sounds).
4. The
CHECK TRANS
light comes on frequently.
The Importance of Proper Fluid Levels:
The transmission fluid cools, lubricates and transmits hydraulic power.
Proper fluid levels must be maintained at all times. If the fluid level is too
low, the converter and clutches do not receive an adequate supply of fluid. If
the fluid level is too high, the fluid can aerate. Aerated fluid can cause the
transmission to shift erratically or overheat.
The MH Series oil level sensor (OLS) allows the operator to obtain an
indication of sensor fluid level from the keypad shift selector. Frequently
check for the presence of oil level diagnostics in the transmission. If the OLS
has not been detected, troubleshooting of the OLS circuit is required. This
will have to be performed by an Allison Service Center. After the OLS
circuit is repaired, ensure that reset of the “autodetect” or manual selection
of the OLS function, using the Pro-Link, has been accomplished.
Fluid Level Check with the Keypad:
• Park the motorhome on a level surface, place the transmission in
“N” and set parking brake.
• The transmission should be at normal operating temperature.
• The motorhome should be stationary for approximately two
minutes to ensure fluid is stabilized.
• Simultaneously press the arrow up and arrow down buttons one
time.
Chassis Information
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D I P L O M A T
1 0 • 2 9 4
Summary of Contents for 2002 Diplomat
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Page 60: ...Driving Safety DIPLOMAT 2 6 0 VIEWS FRONT VIEWS REAR...
Page 68: ...Driving Safety DIPLOMAT 2 6 8 NOTES...
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Page 130: ...Appliances DIPLOMAT 4 1 3 0 NOTES...
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Page 186: ...Water Systems DIPLOMAT 6 1 8 6 NOTES...
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Page 200: ...LP Gas Systems DIPLOMAT 7 2 0 0 NOTES...
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Page 232: ...Electrical Systems House DIPLOMAT 8 2 3 2 NOTES...
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Page 262: ...Electrical Systems Chassis DIPLOMAT 9 2 6 2 NOTES...
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Page 313: ...GLOSSARY OF TERMS 315 INDEX 319 SURVEY 323...
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Page 324: ...FOLD CUT ALONG DOTTED LINE FOLD...