PREVOST X3-45 COMMUTER User Manual

SECTION 14: STEERING
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
35
16 TROUBLESHOOTING
CONDITION CAUSE CORRECTION
Tires wear out
quickly or have
uneven tire tread
wear.
1. Tires have incorrect air pressure.
2. Tires out-of-balance.
3. Incorrect tag axle alignment.
4. Incorrect toe-in setting.
5. Incorrect steering arm geometry.
1. Put specified air pressure in tires.
2. Balance or replace tires.
3. Align tag axle.
4. Adjust toe-in specified setting.
5. Service steering system as necessary.
Vehicle is hard to
steer.
1. L
ow pressure in the power steering
system.
2.
Steering gear not assembled
correctly.
3. Steering linkage needs lubrication.
4. Kingpins binding.
5. Incorrect steering arm geometry.
6. Caster improperly adjusted.
7. Tie rod ends hard to move.
8. Worn thrust bearing.
1. Repair power steering system.
2. Assemble steering gear correctly.
3. Lubricate steering linkage.
4. Replace kingpins.
5. Service steering system as necessary.
6. Adjust caster as necessary.
7. Replace tie rod ends.
8. Replace thrust bearing.
Bent or broken
steering arm,
steering top l
ever or
tie rod assembly.
1.
Too much pressure in the power
steering system.
2. Cut-
off pressure of the power
steering system improperly
adjusted.
3. Vehicle not powered on correctly.
4.
Power steering system not installed
correctly.
1.
Replace damaged part(s), adjust
p
ower steering system to specified
pressure.
2.
Make sure vehicle is powered on
correctly.
3.
Correctly install the power steering
system.
4.
Correctly install the power steering
system.
Worn or broken
steering ball pin.
1.
Drag link fasteners tightened past
specified torque.
2.
Lack of lubrication or incorrect
lubricant.
3.
Power steering stops improperly
adjusted.
1.
Replace damaged part(s), tighten drag
link fasteners to specified torque.
2.
Lubricate linkage with specified
lubricant.
3. Adjust stops to specified dimension.
Worn
kingpins and
knuckle bushings.
1. Worn or missing seals and gaskets.
2. Incorrect lubricant.
3.
Axle not lubricated at scheduled
frequency.
4. Incorrect lubrication procedures.
5.
Lubrication schedule does not
match operating conditions.
1. Replace damaged part(s), replac
e
seals and gaskets.
2. Lubricate axle with specified lubricant.
3. Lubricate axle at scheduled frequency.
4.
Use correct lubrication schedule to
match operating conditions.
5.
Change lubrication schedule to match
operating conditions.
Vibration or shimmy
of front a
xle during
operation.
1. Caster not adjusted properly.
2. Wheels and/or tires out-of balance.
3. Worn steering stabilizer cylinder.
1. Adjust caster.
2. Balance or replace wheels and/or tires.
3. Replace steering stabilizer cylinder.

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