PREVOST X3-45 Multiplex User Manual

Section 11: REAR AXLES
PA1562
2
1. DRIVE AXLE
1.1 DESCRIPTION
The Meritor drive axle is equipped with a single
reduction standard carrier mounted in front of
the axle housing. The carrier consists of a
hypoid drive pinion, a ring gear set and gears in
the differential assembly.
FIGURE 1: DRIVE AXLE 11019
A straight roller bearing (spigot) is mounted on
the head of the drive pinion. All other bearings in
the carrier are tapered roller bearings. When the
carrier operates, there is a normal differential
action between the wheels all the time.
FIGURE 2: DIFFERENTIAL ASSEMBLY 11024
Several speed ratios are available for the drive
axle. These ratios depend upon the motor and
transmission. Also, special applications may
suggest slightly different gear ratios.
1.2 DCDL (DRIVER-CONTROLLED MAIN
DIFFERENTIAL LOCK)
Meritor Single-reduction carriers with driver-
controlled main differential lock (DCDL) have the
same type of gears and bearings as the
standard-type carriers. The differential lock is
operated by an air actuated shift assembly that
is mounted on the carrier.
FIGURE 3: DRIVER-CONTROLLED DIFFERENTIAL LOCK
11028
1.3 DRIVE AXLE LUBRICATION
Additional lubrication information is covered in
the Meritor Technical Bulletin TP-9539:
“Approved Rear Drive Axle Lubricants” annexed
to this section. During initial stage of normal
operation, tiny metal particles originating from
moving parts can be found on mating surfaces.
These particles are carried by the lubricant
through the assembly and act as lapping
compound, which accelerates wear of all parts.
To ensure maximum life of the differential and
prevent premature failure, the original "factory
fill" lubricant should be drained. Change break-in
oil before 3,000 miles (4 800 km) of initial
operation (drain the unit while it is still warm
from operation), in accordance with the
lubrication and servicing schedule.
Change differential oil and clean the breathers,
magnetic fill and drain plugs, every 100,000
miles (160 000 km) or once every two years,
whichever comes first.
Use Multigrade gear oil MIL-L-2105-D. Use the
75W90-gear oil for northern climates and the
80W140 for southern climates. In extreme
conditions, or for better performance, fill with
synthetic gear oil. Check oil level and add (if
necessary) every 6,250 miles (10 000 km) or
twice a year, whichever comes first (Fig. 4).

PREVOST X3-45 Multiplex Specifications

General

Length	45 ft
Width	102 in
Engine	Volvo D13
Horsepower	500 hp
GVWR	54, 000 lbs
Height	146 in
Sleeping Capacity	Varies based on floor plan
Water Capacity	Varies based on floor plan