SECTION 07: TRANSMISSION
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version – Rev.2 April 2016)
5
band, add or drain fluid as necessary to bring
the level within the COLD CHECK band.
6. Perform
a
Hot Check
at the first opportunity
after the normal operating temperature of
160ºF to 200ºF (71ºC to 93ºC) is attained.
FIGURE
4:
COLD
CHECK
07050
CAUTION
DO NOT
operate the transmission for extended
periods of time until a
Hot Check
has verified
proper fluid level. Transmission damage can
result from extended operation at improper fluid
level conditions.
CAUTION
Obtain an accurate fluid level by imposing the
following conditions:
Engine is idling (500-800 rpm) in «N»
(Neutral).
Transmission fluid is at normal operating
temperature.
The vehicle is on a level surface.
3.1.2 Hot
Check
To perform a
Hot Check
, do the following:
1. The
Hot Check
can be performed when the
transmission oil reaches the normal
operating temperature (160ºF to 200ºF /
71ºC to 93ºC). The transmission oil
temperature can be checked with the Driver
Information Display (DID) when selecting the
Gauge menu (refer to the ‘’Operator’s
Manual’’ for added information).
CAUTION
The oil
must be hot
to obtain an accurate
check because the fluid level rises as
temperature increases.
2. Park the vehicle on a level surface and shift to
«N» (Neutral). Apply the parking brake and
allow the engine to idle (500 - 800 rpm).
3. Remove the dipstick from the tube and wipe it
clean. Insert the dipstick into the fill tube,
pushing down until it stops.
4. Remove the dipstick and observe the fluid
level. The safe operating level is anywhere
within the HOT RUN band on the dipstick.
Repeat the check procedure to verify the
reading.
5. If the level
is not
within this band, add or drain
fluid as necessary to bring the level within the
HOT RUN band.
6. Be sure fluid level checks are consistent.
Check level more than once and if readings
are not consistent, check to be sure the
transmission breather is clean and not
clogged. If readings are still not consistent,
contact your nearest Allison dealer or
distributor.
FIGURE 5: HOT CHECK
NOTE
The Cold Check is more appropriate for
verifying the oil level after the first fill-up. In
case of conflict, the Hot Check has priority over
the Cold Check; the fluid level check using
the pushbutton shift selector has priority
over the Hot Check.
3.2
FLUID LEVEL CHECK USING THE
PUSHBUTTON SHIFT SELECTOR
The oil level sensor (OLS) is standard in your
transmission. With the OLS and Allison 5
th
generation shift selector, you can get a more
accurate electronic fluid level check than with a
dipstick.
Oil level codes are obtained as follows:
1. Park vehicle on a level surface, select «N»
(neutral) on the pushbutton shift selector
and apply parking brake.
2. Wait for at least 2 minutes to allow the oil to
settle;
3. Press
simultaneously
the (Upshift) and
(Downshift) arrow buttons once.
4. Oil level codes are displayed once the
following parameters are met :
