Dodge RAM TRUCK 1500 1995 Service Manual page 144

3 - 24 REAR SUSPENSION AND AXLE
B R
M O D E L
6 0 ,
70 a n d 80 A X L E
S E R V I C E
P R O C E D U R E S
INDEX
page
Axle Assembly Removal/Installation 26
Axle Shaft Removal/1 nstallation . 29
Differential Assembly 33
Differential Disassembly 30
Drain and Refill 26
General Information 24
Lubricant 24
GENERAL INFOilAIION
The housing (Fig. 1) consists of an iron center cast­
ing with axle shaft tubes extending from either side.
The tubes are pressed in to form a one-piece axle
housing.
The integral type housing, hypoid gear design has
the centerline of the pinion set below the centerline
of the ring gear.
The axles are equipped with full-floating axle
shafts, meaning that loads are supported by the axle
housing tubes. The full-float axle shafts are retained
by bolts attached to the hub. The hub rides on two
bearings at the outboard end of the axle tube. The
axle shafts can be removed without disturbing or re­
moving the wheel bearings. The wheel bearings are
opposed tapered roller bearings that are part of the
hub assembly.
The removable steel cover provides a means for in­
spection and service without removing the axle from
the vehicle.
A stamped metal axle gear ratio identification tag
is attached to the housing cover with one cover bolts.
This tag also identifies the number of ring and pinion
teeth. An addition tag will be attached if equipped
with a limited-slip differential.
page
Pinion Measurement and Assembly . 36
Pinion Removal/Disassembly 31
Pinion Seal Replacement—Model 60 27
Pinion Seal Replacement—Model 70 and 80 27
Ring Gear Backlash and Contact Pattern . . . . . . . . 39
Wheel Bearing Service 29
The differential case is a one-piece design. The dif­
ferential pinion mate shaft. is retained with a roll
pin. Model 70 axles with the optional Power-Lok use
a two piece differential case. Model 80 axles with the
optional Trac-lok also uses a two piece case. Differen­
tial bearing preload and ring gear backlash are ad­
justed with shims located between the differential
bearing cones and case.
For complete drive axle assembly removal
and installation refer to Drive Axle Assembly
Replacement in this Group.
LUBRICANT
Dana® axles use a thermally stable Lubricant,
80W-90 or equivalent GL-5 grade lubricant. Vehicles
with Trac-Lok/Power-Lok also use 6 oz. of friction
modifier added to the lubricant. Dana 80 4x4 vehicles
use 10 oz. of friction modifier added to the lubricant.
CAUTION: If axle is submerged in water, lubricant
must be replaced immediately to avoid possible
premature axle failure.