Owner`s manual
2008 KNIGHT
CHASSIS INFORMATION — 10
219
Prevent Major Problems:
Help the control system oversee the operation
of the transmission. Minor problems can be kept
from becoming major problems if an Allison
Transmission Service center is notied 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. A remote ll is located at the back of the
engine and a transmission check/ll is located on
the engine.
Fluid and Filter Change Interval:
The transmission has
two lters: a main lter
and a lube lter. 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 uid level
is too low, the converter and clutches do not
receive an adequate supply of uid. If uid level
is too high, the uid can aerate. Aerated uid
can cause the transmission to shift erratically 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.
The transmission is now in Oil Level Sense
mode. The display will indicate one character at
a time. An “o” followed by “L” represents oil
level check mode. One of the following will be
indicated:
“o K” represents the level is okay.
“Lo” represents a low uid level
followed by a numeric indication of the
number of quarts needed ll the sump.
Common Oil Level Fault Codes
Display Cause of Code
o,L - O,X Setting time too short
o,L - 5,0 Engine speed (RPM) too low
o,L - 5,9 Engine speed (RPM) too high
o,L - 6,5 Neutral must be selected
o,L - 7,0
Sump uid temperature too low
o,L - 7,9
Sump uid temperature too high
o,L - 8,9 Output shaft rotation
o,L - 9,5 Sensor failure
Located inside rear
engine access
070176