MAINTENANCE MANUAL - Meritor

Assembly and Installation
CAUTION
ON EARLY DESIGN FORWARD DIFFEREN-
TIAL , VERIFY THAT THE DRIVE FLATS IN
THE BORE OF THE PUMP ARE ALIGNED
WITH THE FLATS ON THE INPUT SHAFT.
IF THE FLATS ARE NOT ALIGNED, THE
PUMP WILL BE DAMAGED.
NOTE: If you replace either the bearing
cap or cone, replace both parts in a fullymatched
set from the same manufacturer.
5. On differential that use an oil pump, install
the input bearing cage and oil pump.
A. Position the input shaft so that the threads
are toward you
• If dowel pins are used, install the oil pump
onto the input shaft so that the dowel pin hole
in the pump is toward the threads on the shaft.
• If a drive flat design pump is used, verify that the
drive flats in the bore of the pump are aligned
with the flats on the input shaft.
• If a spline design pump is used, verify that
the splines in the pump are aligned with the
splines on the shaft. Figure 5.70.
OIL PUMP
SPLINES
INPUT SHAFT
Figure 5.70
CAUTION
WHEN THE BEARING CONE AND THE OIL
PUMPS ARE INSTALLED ON THE INPUT
SHAFT, PLACE SUPPORTS UNDER THE IN-
PUT SHAFT. DO NOT PLACE SUPPORTS
UNDER THE OIL PUMP. THE OIL PUMP WILL
BE DAMAGED IF PRESSURE IS APPLIED TO
THE BODY OF THE PUMP.
B. Place supports under the input shaft.
C. Use a press and a sleeve to install the bearing
cone onto the input shaft. The cone is
correctly installed when the bottom of the
cone touches the shoulder on the shaft. Figure
5.71.
PRESS
SLEEVE
BEARING
CONE
OIL PUMP
Figure 5.71
D. If removed, install the pressure relief valve
assembly into the input bearing cage. Install
the relief valve, spring and plug in the bore.
Tighten the plug to 20-40 lb-ft (27-54 N.m).
Figure 5.72.
Figure 5.72
66 MAINTENANCE MANUAL
PLUG
SPRING
RELIEF VALVE