PREVOST X3-45 COMMUTER User Manual

SECTION 07: TRANSMISSION
14
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
CAUTION
The transmission housing must be seated
against the engine housing (with the spacer in
place) prior to tightening any screws. DO NOT
USE SCREWS TO SEAT THE HOUSING.
10. Start all screws attaching the transmission
housing to the engine housing.
11. Tighten them gradually in a crisscross
sequence as shown in Figure 13. Apply the
following torque value:
TORQUE: 46-50 lb-ft (62-68 Nm)
FIGURE 13: CRISS CROSS PATTERN
12. Remove the headless guide bolt from the flex
plate adapter through the engine starter
access opening. Replace it with a self-locking
screw, finger-tighten then start the remaining
screws. Use Volvo engine turning tool
#88800014 (Figure 10) to align holes. If you
do not have the Volvo tool, place a wrench on
the crankshaft pulley attaching screw to turn it
and therefore turn the flex plate.
13. Tighten all screws to the following torque
value:
TORQUE: 24-30 lb-ft (33-41 Nm)
NOTE
Reinstall engine starter and connect cables.
Reinstall access plug below starter motor.
14. Remove jack from under transmission.
15. Connect all sensors.
16. Connect the main wiring harness.
17. Connect the air supply line (steel-braided
hose) to the retarder control valve (if
applicable).
18. Connect the two transmission fluid cooler
hoses as they were previously.
19. Reinstall clamps and brackets, and replace
locking ties previously removed during
removal procedure.
20. Install propeller shaft and its safety guard.
Refer to Section 09, "PROPELLER SHAFT".
21. Install transmission dipstick and filler tube.
22. Install cross member under transmission.
23. Install engine splash guards.
24. Adjust the retarder pressure to 80 ± 3 psi with
the air pressure regulator. For more
information refer to Section 12, "BRAKE AND
AIR SYSTEM", under heading "AIR
PRESSURE REGULATOR". The air pressure
regulator is located at back of engine
compartment, on R.H. side (Figure 14) or in
the R.H. side rear service compartment.
25. Make sure that the drain plug is in place, and
then remove the transmission dipstick and
pour approximately 28 US qts (26.5 liters) of
automatic transmission fluid through the filler
tube. Check and adjust fluid level.
CAUTION
Do not overfill the transmission. Overfilling can
cause fluid
aeration (milky appearance) and
overheating. If overfilling occurs, drain fluid as
required to bring it to the proper level.
FIGURE 14: AIR PRESSURE REGULATOR (TYPICAL)

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