PREVOST X3-45 COMMUTER User Manual

SECTION 11: REAR AXLES
6
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 11 revised Jan 2021
2. ZF A132 DRIVE AXLE
This vehicle is equipped with a ZF model A132
Hypoid Single Reduction drive axle, fitted with
two Knorr Bremse brake chambers, Knorr
Bremse SN7 disc brake and companion flange
for Dana Spicer SPL250 propeller shaft. Visual
brake wear indicator and a potentiometer wear
indicator are installed. The carrier gear ratio is
3.82.
NOTE
Additional information is found in the following
manuals, included on your vehicle technical
publications USB drive:
•
OPERATING INSTRUCTIONS ZF AXLE A132
(version with US hub) #5871 207 982 EN.
• ZF AXLE A132 REPAIR MANUAL #5871 207 002E
FIGURE 1: ZF A132 DRIVE AXLE 11019
2.1 MAINTENANCE
Proper vehicle operation starts with preventive
maintenance, which includes adequate
operation of the differential.
The most common causes of drive axle failures
are spinout, shock, fatigue, overheating and lack
of lubrication. Monitor these conditions as they
could be the first steps leading to improper
maintenance, expensive repairs, and excessive
downtime.
Inspect at the pinion oil seal, axle shaft flange
and carrier housing joint for evidence of lubricant
leakage. Tighten the bolts and nuts, or replace
the gaskets and seals to correct leaks.
Maintenance of the axle mountings consists
primarily in a regular and systematic inspection of
the radius rods, as directed in Section 16,
"Suspension".
2.1.1 Differential Oil Type
Use Mobil Delvac Synthetic Gear Oil 80W-
140 (ZF lubricant class 12M). Other approved
lubricants may be use. Additional lubrication
information is covered in ZF’s list of lubricants
TE-ML 12.
2.1.2 Checking and Adjusting the Differential
Oil Level
1. Place the vehicle on a level surface.
2. Level check plug must be cleaned carefully
before opening.
3. Check oil level at room temperature only.
MAINTENANCE
Oil level check
Check differential oil level and add if
necessary
at the intervals specified by the
Lubrication And Servicing Schedule in
Section 24A.
WARNING
Check the oil level when the axle is at room
temperature. When hot, the oil temperature
may be 190ºF (88ºC) or more and can cause
burns. Also, a correct reading is not obtained
when the axle is warm or hot.
4. Make sure the axle is at room temperature.
5. Clean the area around the level check plug.
Remove the level check plug from the
differential case.
6. The oil level must be even with the bottom of
the level check bore.
7. If oil flows from the hole when the plug is
loosened, the oil level is too high. Let drain
the oil to the correct level.
8. If the oil level is below the bottom of the level
check bore, add the specified oil through the
level check bore.
9. Reinstall the level check plug using a new
seal (O-ring).
Tighten to 52 lb-ft (71 Nm)

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