Dodge Ram Truck 1500-2500-3500. Manual — part 81
GEAR CONTACT PATTERN
1. Wipe clean each tooth of the ring gear.
2. Apply gear marking compound to all of the ring
gear teeth.
3. Verify bearing cap bolts are torque specification.
4. Apply the brakes lightly to create at 14 N·m (10 ft.
lbs.) pinion rotating torque.
5. Rotate the pinion/pinion yoke 4 full revolutions in
each directions.
6. Read gear tooth contact pattern.
Gear contact pattern correct. Backlash and pinion
depth is correct.
Ring gear too far away from pinion gear coast side toe
(1) drive side heel (2). Decrease backlash by moving
the ring closer to the pinion gear.
Ring gear too close to pinion gear drive side toe (1)
coast side heel (2). Increase backlash, by moving the
ring away from the pinion gear.
3 - 156
FRONT AXLE - C205F
DR/DH
Ring gear too far away from pinion gear drive side
heel (1) coast side heel (2). Decrease backlash, by
moving the ring closer to the pinion gear.
Ring gear too close to pinion gear drive side toe (1)
coast side toe (2). Increase backlash, by moving the
ring away from the pinion gear.
Pinion gear set too low. Increase pinion gear height,
by increasing the pinion depth shim thickness.
Pinion gear set too high. Decrease pinion depth, by
decreasing the pinion depth shim thickness.
DR/DH
FRONT AXLE - C205F
3 - 157
SPECIFICATIONS
AXLE SPECIFICATIONS
DESCRIPTION
SPECIFICATION
Axle Ratio
3.21,3.55, 3.73,3.92
Differential Case Flange Runout
0.076 mm (0.003 in.)
Differential Side Gear Clearance
0-0.15 mm (0-0.006 in.)
Ring Gear Diameter
205 mm (8.0 in.)
Ring Gear Backlash
0.12-0.20 mm (0.005-0.008 in.)
Ring Gear Runout
0.12 mm (0.005 in.)
Pinion Bearing Preload - New Bearings
2.0-2.8 N·m (18-25 in. lbs.)
Pinion Bearing Preload - Original Bearings
1-2 N·m (10-20 in. lbs.)
TORQUE SPECIFICATIONS
DESCRIPTION
N·m
Ft. Lbs.
In. Lbs.
Mounting Nuts
95
70
-
Differential Fill Hole Plug
34
25
-
Differential Cover Bolts
22
15
-
Bearing Cap Bolts
61
45
-
Ring Gear Bolts
108
80
-
Pinion Nut
271-475
200-350
-
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FRONT AXLE - C205F
DR/DH
SPECIAL TOOLS
PULLER C-293-PA
PLUG C-293-3
ADAPTER C-293-42
ADAPTER C-293-48
PILOTS C-3288-B
DIAL INDICATOR C-3339
INSTALLER C-3716-A
INSTALLER C-3718
DR/DH
FRONT AXLE - C205F
3 - 159
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