PREVOST X3-45 COMMUTER User Manual

SECTION 14: STEERING
10
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
4 BLEEDING POWER STEERING
HYDRAULIC SYSTEM
To bleed the power steering hydraulic system,
refer to “RB Robert Bosch Servocom - Service
Manual (8090)”, found on your Technical
Publications USB flash drive, under heading
"Setting and Functional Test".
5 HYDRAULIC PRESSURE TEST
Perform a pressure test as outlined in the "ZF-
SERVOCOM Repair Manual" annexed to this
section under heading "Setting and Functional
Test".
NOTE
Vehicle is equipped with ZF-
SERVOCOMTRONIC (speed sensitive) unit,
refer to repair manual ZF-SERVOCOM
supplement.
6 POWER STEERING HYDRAULIC PUMP
The power steering pump is a gear driven
hydraulic unit which supplies hydraulic pressure
for the operation of the steering gear. The pump
is mounted on the engine, at the flywheel end
and is also used for driving the fuel pump.
6.1 REMOVAL AND INSTALLATION
The pump is accessible through the engine
compartment R.H. access door.
To remove the pump, proceed as follows:
1. You must first remove the fuel feed pump.
2. Clean around the fuel pump and fuel lines.
Position a container to catch any fuel that
might drain from the pump or lines.
3. Remove the fuel pump.
NOTE
Only unfasten the bolts marked with arrows.
FIGURE 5: FUEL PUMP REMOVAL
CAUTION
Ensure to clean around the head of the bolts.
Debris will prevent the tool from fitting properly
and cause damage to the fasteners.
4. Check that the adapter and fuel pump drive
axle are not damaged.
FIGURE 6: FUEL PUMP DRIVE AXLE
5. Set the fuel pump aside.
6. Clean around the power steering pump and
loosen the steering lines. Position a container
to catch any hydraulic fluid that might drain
from the pump or lines.
7. Unfasten the 3 power steering pump bolts.
NOTE

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