CHASSIS INFORMATION - 10
201
CAY M A N 2 0 0 7
Some codes are self-clearing while others will
require service or ignition on/off cycles to clear.
Periodic Inspections
The Allison MH Series requires very little
maintenance. Careful attention to the uid level,
electrical connections and hydraulic hoses is
very important.
The transmission should be kept clean for easy
inspection. Make periodic checks for loose bolts
and leaking uid. Check the condition of the
electrical harnesses regularly. Check the engine
cooling system occasionally for evidence of
transmission uid that would indicate a faulty
oil cooler. Report any abnormal condition to an
Allison Service Center.
Prevent Major Problems:
Help the control system oversee operation of
the transmission. Minor problems can be kept
from becoming major problems if an Allison
Transmission Service center is noti ed when one
of these conditions occur:
1. Shifting feels odd.
2. Transmission leaks uid.
3. Unusual transmission-related
sounds (sound made by normal
engine thermostatic fan cycling
when climbing a long grade with a
heavy load are often mistaken for
transmission-related sounds).
4. The Check Trans indicator comes on
frequently.
TRANSMISSION FLUID & FILTERS
The transmission is lled with TranSynd
™
synthetic transmission uid at the factory.
TranSynd
™
synthetic transmission uid extends
service intervals. A small tag has been attached
to the dipstick identifying that the transmission is
lled with TranSynd
™
synthetic transmission uid.
Fluid and Filter Change Interval:
The transmission has two lters: a main
lter and a lube lter. Change the main lter
at the rst 5,000 miles. Thereafter follow the
service intervals listed in the transmission OEM
(Original Equipment Manufacturers) manual.
Fluid and lters may require changing earlier
than recommended in the transmission OEM
manual, depending on the severity of operating
conditions. Fluid must also be changed whenever
there is evidence of dirt or high temperature
operation as indicated by discoloration, strong
odor or uid analysis. Local conditions, severity
of operation or duty cycle will dictate more or
less frequent service intervals.
CAUTION:
DO NOT mix Dexron III
®
transmission
fluid with TranSynd
™
Synthetic
transmission fluid.
NOTE:
Be sure to retain the receipt for
proof of the initial Main filter change.
Refer to the Allison transmission
owner’s manual or contact an
authorized Allison service center for
service intervals.
Proper Fluid Levels:
Transmission uid cools, lubricates and
transmits hydraulic power. Proper uid levels
must be maintained at all times. If the level is
low, the converter and clutches do not receive
an adequate supply of uid. If the level is high,
the uid can aerate and cause the transmission
to erratically shift or overheat.
An Oil Level Sensor (OLS) is built into the
transmission. The uid level can be checked
easily and cleanly using the shift selector. Check
the transmission uid level before each trip and
after removing the motorhome from storage.
Fluid Level Check from the Shift Selector:
To Enter Oil Level Sense Mode:
Park the motorhome on a level surface.
Place the transmission in “N” and set
parking brake.
The transmission temperature must be at
least at operating temperature or an error
code will appear.
The motorhome must be stationary and in
Neutral for approximately two minutes to
allow the uid to settle in the sump.
The engine must be idling lower than
800 RPM.
Simultaneously press the Up and Down
buttons once.
Located inside rear
engine access
070176
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