PREVOST X3-45 COMMUTER User Manual

SECTION 07: TRANSMISSION
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
11
Using the fluid level dipstick filler tube, refill with
28 US qts (26.5 liters) and check the fluid level
using the Fluid Level Check Using
Pushbutton Shift Selector procedure in this
section. Add transmission fluid according to
pushbutton shit selector fluid level check.
3.6 CLEANING AND INSPECTION OF
ALLISON AUTOMATIC TRANSMISSION
The exterior of the transmission should be
cleaned and inspected at regular intervals. The
length of service and severity of operating
conditions will determine the frequency of such
inspections. Inspect the transmission for:
1. Loosen bolts (transmission and mounting
components);
2. Fluid leaks (correct immediately);
3. Loose, dirty, or improperly adjusted throttle
sensor linkage;
4. Damaged or loose fluid lines;
5. Worn or frayed electrical harnesses, improper
routing;
6. Worn or out of phase drive line U-joint and slip
fittings.
CAUTION
DO NOT pressure wash the transmission
electrical connectors. Water and detergent will
cause the contacts to corrode or become faulty.
3.6.1 Breather
The breather is located on the engine, flywheel
side near the valve cover. It serves to prevent
pressure build-up within the transmission and
must be cleaned to keep the passage opened.
The prevalence of dust and dirt will determine the
frequency at which the breather requires cleaning.
Use care when cleaning the engine. Spraying
steam, water or cleaning solution directly at the
breather can force the water or solution into the
transmission. Always use care when removing the
hose connector from transmission to prevent the
entry of foreign matter.
4. ALLISON TRANSMISSION FLUID
COOLER REMOVAL
4.1 TRANSMISSION WITH RETARDER
Stop engine and allow engine to cool. Close both
heater line shutoff valves (refer to Section 05
‘’Cooling’’).
1. To drain the cooling system, proceed as per
Section 05 ‘’Cooling’’, paragraph 5: Draining.
If the cooling system is contaminated, flush
system as per Section 05 ‘’Cooling’’,
paragraph 7: Flushing.
2. Remove the rear L.H. side tag axle wheel,
then remove the rear L.H. side fender panel.
3. Disconnect the transmission hoses from fluid
cooler. Cover hose ends and fittings to
prevent fluid contamination.
FIGURE 7: COOLER WITH RETARDER (07073)
WARNING
A significant amount of fluid
may drain from
fluid lines when they are disconnected.
4. Unfasten the constant-torque hose clamps
and remove the two hoses.
5. Unscrew the holding bolts and nuts and
remove the fluid cooler from engine
compartment.
5. ALLISON TRANSMISSION REMOVAL
The following procedure deals with the removal of
the Allison transmission without removing the
power plant cradle from vehicle. The methods
used to support the transmission and engine
depend upon conditions and available equipment.
1. Select transmission's "NEUTRAL" positions,
apply parking brake, and then set battery
master switch to the "OFF" position.
2. Jack up vehicle, then place safety supports
underneath body.

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