PREVOST X3-45 COMMUTER User Manual

SECTION 10: FRONT I-BEAM AXLE
D DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
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time any component of the steering system is
repaired, disassembled or adjusted.
Check if front tires rub against the frame or if the
steering gear has been serviced.
Proceed with the following method to check the
steering maximum turning angle :
7.4.1 R.H. Turn Adjustment
CAUTION
To prevent the steering damper from interfering
with the adjustment of turning angles, make
sure its fixing bracket is at the correct location
on the axle center (refer to section 14
“Steering”).
1. Turn steering wheel to the right until the boss
on the axle center touches the right stop
screw.
2. Verify the nearest point of contact of the ball
socket body with the air spring support
assembly. Measure the distance between
those two points.
3. The distance between these two points
should be approximately 1/8 inch (3 mm). If
not, the steering stop screws must be
readjusted.
4. Verify the nearest point of contact of the drag
link with the tire. Measure the distance
between those two points.
5. The distance should be 1 inch (25 mm) or
more. If not, the steering stop screws must
be readjusted.
6. This must be done for a full right turn.
7. If readjustment is required:
a. Remove the swivel stop screw.
b. Add to the stop screw the required
number of washers to obtain the proper
measure, tighten the stop screw
afterwards. Two washers of different
thickness are available: 1/16 inch and
3/16 inch.
7.4.2 L.H. Turn Adjustment
1. Turn steering wheel to the left until the boss
on the axle center touches the left stop screw.
2. Verify the nearest point of contact of the ball
socket body with the air bellows support
assembly. Measure the distance between
those two points.
3. The distance between these two points
should be approximately 1/8 inch (3 mm). If
not, the steering stop screws must be
readjusted.
4. Check the stroke of the steering stabilizer
cylinder (damper). It should not exceed
12.59 inches (320 mm).
5. The steering stopper screw must be in
contact before the steering stabilizer reaches
the end of the stroke.
6. This must be done for a full left turn.
7. If readjustment is required:
a. Remove the swivel stop screw.
b. Add to the stop screw the required
number of washers to obtain the proper
measure, tighten the stop screw
afterwards. Two washers of different
thickness are available: 1/16 inch and
3/16 inch.
NOTE
If steering angle stoppers are changed, a
special procedure is r
equired for readjusting
gearbox steering limiter. See paragraph 7.5
‘’Hydraulic Stop’’ in this section.
7.5 HYDRAULIC STOP
NOTE
Before steering limiter readjustment, verify
vehicle wheel alignment and ensure that oil
level is checked and that air bleeding is done.
Refer to ‘ZF-Servocom Repair Manual’’ annexed
at the end of Section 14 ‘’Steering’’ under
heading ‘Setting and Functional Test.
7.6 FRONT WHEEL CAMBER
Wheel camber is the number of degrees the top
of the wheel tilts outward (positive) or inward
(negative) from a vertical angle (Figure 4).

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