PREVOST X3-45 COMMUTER User Manual

SECTION 07: TRANSMISSION
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
13
6. ALLISON TRANSMISSION
INSTALLATION
1. Place the transmission on a transmission
jack.
2. Install a headless guide bolt into one of the 12
threaded holes in the flex plate adapter.
NOTE
For more clearance between the tag axle and
transmission, the tag axle may be unloaded and
jacked up.
FIGURE 9: TRANSMISSION INSTALLATION
3. With the engine starter removed, use Volvo
engine turning tool #88800014 (Figure 10) to
align one of the 12 attaching screw holes in
the flex plate with the engine starter access
opening. 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.
FIGURE 10: VOLVO ENGINE TURNING TOOL #88800014
4. Apply clear silicone (Prevost #680457 or
equivalent) on the spacer and install it on the
engine housing (Figure 11).
FIGURE 11: SPACER INSTALLATION
5. Lubricate the flywheel center pilot boss with
molybdenum disulfide grease (Molycote G, or
equivalent).
6. Raise transmission and position the flywheel
pilot boss with the crankshaft hole.
7. Turn the flex plate adapter into the
transmission to align the headless guide bolt
with the flex plate hole facing the engine
starter access opening.
WARNING
Severe damages and/or personal injury can
occur if transmission is not adequately
supported.
8. Apply clear silicone (Prevost #680457 or
equivalent) around the edge of the
transmission housing (Figure 12).
FIGURE 12: SILICONE APPLICATION TRANSMISSION
HOUSING
9. Seat the transmission against the engine
housing (with the spacer in place). NO
FORCE SHOULD BE REQUIRED. If
interference is encountered, move the
transmission away from engine, then
investigate the cause.

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