Dodge ram truck 3500 1996 Service Manual page 131

B R DIFFERENTIAL AND DRIVELINE 3 - 65
REMOVAL AND INSTALLATION (Continued)
DIFFERENTIAL
Fig. 21 Tightening Pinion Gear Nut
(12) Remove the tools from the shaft. Rotate the
pinion several complete revolutions (both directions)
to additionally seat the bearing rollers.
CAUTION: Do not loosen pinion gear nut to
decrease pinion gear bearing preload or exceed
specified preload torque. If preload torque is
exceeded a new collapsible spacer must be
installed. The tightening sequence must be
repeated.
(13) Measure the pinion bearing preload torque by
rotating pinion shaft with a torque wrench. The cor­
rect bearing preload torque is 2-4 N-m (20-30 In.
lbs.). This torque value is with replacement bearings
and pinion nut tightened to a minimum of 285 N-m
(210 ft. lbs.) torque (Fig. 22)
When using original p i n i o n rear bearing and
a replacement front bearing. The correct pre­
load torque Is 1 N»m (10 in. lbs.) torque plus the
torque measured and recorded during disas­
sembly.
The bearing preload torque should be con­
stant during a complete revolution of the drive
pinion gear shaft. If preload torque varies
while rotating the shaft, there is an internal
binding that must be corrected before assem­
bly.
(14) I f specified torque is not obtained, tighten the
nut in small increments until preload torque is
obtained.
The differential will be unacceptable for use
if the final nut torque is less than 285 N«m (210
Fig. 22 Bearing Preload Torque Measurement
ft. lbs.) torque. If preload torque is not within
the specified range this is also unacceptable.
D I S A S S E M B L Y A N D A S S E M B L Y
STANDARD DIFFERENTIAL
DISASSEMBLE
(1) Remove pinion gear mate shaft.
(2) Rotate the differential side gears and remove
the pinion mate gears and thrust washers (Fig. 23).
THRUST
WASHER
MATE G E A R SIDE G E A R J9203-61
Fig. 23 Pinion Mate Gear Removai
(3) Remove the differential side gears and thrust
washers.