PREVOST X3-45 COMMUTER User Manual

SECTION 07: TRANSMISSION
6
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
CAUTION
Obtain an accurate fluid level by following
these conditions:
• Engine is idling (500-
800 rpm) in «N»
(Neutral).
• Tran
smission 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 fluid reaches the normal
operating temperature (160ºF to 200ºF /
71ºC to 93ºC). The transmission fluid
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 fluid must be hot
to obtain an accurate
che
ck 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 fluid 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
Fluid level sensor (OLS) is provided as a
standard equipment with the vehicle
transmission. With the OLS and Allison 5th
generation shift selector, a more accurate
electronic fluid level check is achieved compared
with the dipstick.
Fluid 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 fluid
to settle;
3. Press simultaneously the
(Upshift) and
(Downshift) arrow buttons once.
4. Fluid level codes are displayed once the
following parameters are met :
• The vehicle has been stationary for
approximately 2 minutes to allow the
fluid to settle;
• Engine at idle;
• Fluid at normal operating temperature,
between 104°F (40°C) and 220°F
(104°C);
• Transmission in «N» (Neutral);
• Transmission output shaft stopped;
• Fluid level sensor present and working.
5. Correct fluid level is
displayed as shown.

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in