Compact Bearing (Hub Unit) Axial Play Check - PREVOST H3-41 Maintenance Manual

MAINTENANCE
Oil change interval – Lubricant class 12M
Change differential oil and breather, clean the
drain plug's magnetic inserts after 110 000
miles (180 000 km) or 3 years, whichever
comes first.
Hot Region Operation. Change differential oil
and breather, clean the drain plug's magnetic
inserts after 80 000 miles (120 000 km) or 2
years, whichever comes first.
Note: Different oil change intervals may be
applicable if not using Lubricant Class 12M oil.
Refer to ZF list of lubricants TE-ML 12 for
appropriate oil change intervals if not using
Lubricant Class 12M .
Hot region oil change interval is applicable
where:
The monthly average temperature exceeds
25°C in more than 2 months within a year or if
temperatures rise above 40°C on more than 7
days in a year
Possible hot region: USA (South and deserts)
FIGURE 11: ZF A132 DRIVE AXLE
 Put a large container under the differential
case drain plug. The differential case contains
approximately 19 quarts of oil.
Remove the drain plug from the bottom of the

differential case. Drain all the oil and discard
in an environment friendly manner.
Clean the magnetic insert of the drain plug, fit

a new seal (O-ring) and reinstall drain plug.
WARNING
The oil temperature may be extremely high!
Risk of burn injuries.
Remove the filler plug and the level check

plug.
 Reinstall the drain plug.
Tighten to 96 lb-ft (130 Nm)
Add the specified oil at the filler plug until the

oil level is even with the bottom of the level
check bore.
Filling volume is about 19 quarts (18 liters) at the
level check bore
Allow the oil to flow through the axle and

check the oil level again after some minutes.
Refill if necessary until specified level is
reached and remains constant.
 Reinstall the filler plug and level check plug
using new seals (O-ring).
Tighten to 52 lb-ft (71 Nm)
Replace the breather with every oil change.

TORQUE: 4 lb-ft (5 Nm)
3.1.4 Compact Bearing (Hub Unit) Axial Play
Check
Check the compact bearing (hub unit) axial play
every 100 000 miles. Furthermore, the bearing
must be checked in case of brake disk change,
ABS fault message and rising noise level at
increasing speed.
Perform compact bearing (hub unit) axial play
check as described in paragraph 6.2 HOW TO
CHECK THE AXIAL PLAY of the following
manual: OPERATING
AXLE A132 (version with US hub) #5871
207 982 EN.
PA1621 Maintenance Manual All Series | January 2017
SECTION 11: REAR AXLES
INSTRUCTIONS
13
ZF