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4B7-4 LOCKING DIFFERENTIALS
11. If the backlash is too low, use a thinner thrust
washer.
Right Side Gear Backlash Adjustment
1. Assemble the clutch plates.
• Alternate the plates as shown in figure 1.
2. Assemble the guide clips (19) to the plates.
• Use grease in the clips to hold them in place
on the plates.
3. Install the thrust washer (8), clutch plate assembly
(9), and right side gear to the differential.
4. Place the pinion gears (7) and thrust washers (6)
into the differential.
• Align them with the pinion shaft hole.
5. Press down the side gear, and install the pinion
shaft (18) and lock screw (3).
• If the side gear cannot be pressed down far
enough to install the pinion shaft, replace the
thrust washer with a thinner washer.
6. Rotate the pinion gear closest to the lock screw so
th a t one o f th e te e th is p o in tin g d o w n w a rd
(perpindicular to the ring gear flange).
7. Insert a large tapered tool such as a screwdriver
firm ly between the side gear and the pinion shaft.
8. Mount a dial indicator to the ring gear flange, and
place the stem of the indicator on one of the teeth
on the pinion gear closest to the lock screw (figure
5).
9. Pull the pinion gear firmly into its seat, and rotate
the gear back and forth while reading the dial
indicator. Record the reading.
10. Repeat steps 6 through 9 on the opposite pinion
gear.
11. The backlash should be between 0.051 and 0.243
mm (0.002 - 0.010-inch).
12. If the backlash is too high, use a thicker thrust
washer.
13. If the backlash is too low, use a thinner thrust
washer.
Thrust Block Clearance Adjustment
Install or C onnect
Left thrust washer (13) to the differential.
Cam unit to the differential.
Right thrust washer (8) to the differential.
Clutch plates with guide clips to the differential.
• Assemble alternatively as shown in figure 1.
Right side gear (10) to the differential.
Pinion shaft (18) and lock screw (3). Insert a large
tapered tool such as a screwdriver firmly between
each side gear and the pinion shaft.
A 1 to 2-inch telescoping gage between the side
gear faces, not the gear teeth.
• Measure the side gear spread (figure 6).
M easure
Remove the telescoping gage.
Measure the telescoping gage with a micrometer.
Measure the original thrust block at the outer corner
with a micrometer (figure 7).
If the th ru s t b lo c k th ic k n e s s is not 0.000 to
0.006-inch less than the side gear spread, adjust the
clearance by:
— Selecting a new thrust block the correct size to
obtain 0.000 to 0.006-inch clearance.
— Reshiming the right and/or left clutch disk
pack. The b acklash m ust rem ain 0.002 -
0.010-inch.
ASSEMBLY OF THE DIFFERENTIAL
Install or C onnect (Figure 1)
1. Left thrust washer (13).
2. Cam unit. Refer to "Cam Unit Assem bly" in this
section.
3. Right thrust washer (8).
4. Right clutch plates with guide clips (19).
• Assembly alternatively as shown in figure 1.
5. Right side gear (10).
6. Thrust block (17), thrust washer (6), and pinion gear
(7).
• Place the pinion gears into the differential 180
degrees apart.
• Rotate the gears and thrust block into position.
Summary of Contents for 1989 Light Duty Truck
Page 1: ...vr V Light Duty Truck Unit Repair Manual...
Page 2: ......
Page 11: ...GENERAL INFORMATION OA 5 Figure 8 RV Models...
Page 13: ...GENERAL INFORMATION OA 7 Figure 11 ST Models...
Page 18: ......
Page 44: ......
Page 76: ...1B3 18 R 4 AIR CONDITIONING COMPRESSOR N...
Page 114: ......
Page 162: ......
Page 176: ...4B3 14 91 2 INCH RING GEAR...
Page 192: ...4B5 4 DANA REAR AXLES Figure 4 Spreading the Differential Case Figure 7 Removing the Ring Gear...
Page 218: ......
Page 220: ...4B6 2 12 INCH RING GEAR ROCKWELL F 04734 Figure 1 Rear Axle Components...
Page 229: ...12 INCH RING GEAR ROCKWELL 4B6 11 SPECIAL TOOLS Special Tools...
Page 230: ...4B6 12 12 INCH RING...
Page 240: ...4B7 10 LOCKING DIFFERENTIALS SPECIAL TOOLS Special Tools...
Page 260: ...4C2 6 93 4 INCH RING GEAR FRONT AXLE Figure 16 Removing the Pinion Inner Bearing...
Page 273: ...T TRUCK FRONT AXLE 4C3 3 F 05785 Figure 1 Axle Components...
Page 291: ...K TRUCK FRONT AXLE 4C4 3 Figure 1 Front Axle Com ponents K 15 25 Models...
Page 293: ...K TRUCK FRONT AXLE 4C4 5 Figure 3 Front Axle Com ponents K35 Models...
Page 318: ...C4 30 K TRUCK FBOHT AXLE...
Page 334: ......
Page 361: ...2 5 LITER L4 ENGINE 6A1 5 Figure 3 Cylinder Head Manifolds and Components...
Page 363: ...2 5 LITER L4 ENGINE 6A1 7 F 05715 Figure 5 Block and Components...
Page 395: ...2 8 LITER V 6 6A2 3 Figure 1 Engine Lubrication Diagram...
Page 396: ...6A2 4 2 8 LITER V 6 Figure 2 Engine Lubrication Diagram...
Page 424: ...6A2 32 2 8 LITER V 6...
Page 427: ...I 4 3 LITER V 6 6A3 3 Figure 1 Engine Lubrication Diagram B 07857...
Page 451: ...4 3 LITER V 6 6A3 27 SPECIFICATIONS ENGINE SPECIFICATIONS F 6344...
Page 457: ...4 8 LITER L6 6A4 3 Figure 2 Lubrication Diagram Front View...
Page 460: ...6A4 6 4 8 LITER L6 C 1 107 112 fK 108 3 109 165 129 B 05056 Figure 5 Block and Components...
Page 490: ...Ml...
Page 493: ...V8 ENGINE 6A5 3 Figure 1 Lubrication Diagram 5 0L and 5 7L Engines...
Page 494: ...6A5 4 V8 ENGINE Figure 2 Lubrication Diagram 5 0L and 5 7L Engines...
Page 530: ...6A5 40 V8 ENGINE Figure 81 Exhaust Manifold 7 4L Engines Figure 82 Water Pumps and Components...
Page 571: ...6 2 LITER DIESEL 6A7 35 Figure 58 Vacuum Pump Installed...
Page 576: ......
Page 582: ...6C1 6 MODEL 1MEF CARBURETOR Figure 9 Monojet Model 1MEF...
Page 604: ...6C2 6 MODEL M4MEF CARBURETOR Figure 9 Model M4MEF...
Page 640: ...6C4 8 MODEL 700 THROTTLE BODY...
Page 652: ...nmm...
Page 672: ......
Page 693: ...DISTRIBUTORS 6D5 13 Figure 27 Testing the Pickup Coil Figure 28 Testing the Ignition Coil...
Page 696: ......
Page 698: ...7A1 2 700 R4 AUTOMATIC TRANSMISSION Figure 1 Case and External Parts J H 0 0 5 3 7 0 0 R 4 R 2...
Page 745: ...700 R4 AUTOMATIC TRANSMISSION 7A1 49...
Page 762: ...7A2 2 400 475 AUTOMATIC TRANSMISSION Figure 1 Case and External Parts H H 0021 400 R 3...
Page 773: ...400 475 AUTOMATIC TRANSMISSION 7A2 13 Figure 29 Internal Parts H H 0 0 4 3 4 0 0 R 2...
Page 797: ...400 475 AUTOMATIC TRANSMISSION 7A2 37 Figure 93 Control Valve Assem bly...
Page 803: ...400 475 AUTOMATIC TRANSMISSION 7A2 43 Figure 104 Bushing Replacement Procedure...
Page 808: ...J c I i sal...
Page 838: ......
Page 840: ......
Page 842: ......
Page 850: ...7B1 12 HM 290 MANUAL TRANSMISSION J i t i a x V L...
Page 856: ...7B1 18 HM 290 MANUAL TRANSMISSION...
Page 892: ...7B1 54 HM 290 MANUAL TRANSMISSION Figure 93 Special Tools...
Page 897: ...HM 117 TRANSMISSION 7B2 5...
Page 901: ...HM 117 TRANSMISSION 7B2 9 B 05180 Figure 17 Installing the 1st and 2nd Synchronizer...
Page 912: ...20 HM...
Page 924: ...7B3 12 NEW PROCESS TRANSMISSION SPECIAL TOOLS...
Page 927: ...BORG WARNER TRANSMISSIONS 7B4 3 Figure 2 77 mm Transmission and Components...
Page 940: ...i ii iii m i in m i...
Page 944: ...7D1 4 TRANSFER CASE FO 5688 Figure 3 NP205 Transfer Case...
Page 952: ...7D1 12 TRANSFER CASE...
Page 963: ...NEW PROCESS 241 TRANSFER CASE 7D2 11 Figure 17 Oil Pump Pickup Screen Doweled Case Holes...
Page 964: ...7D2 12 NEW PROCESS 241 TRANSFER CASE Figure 18 NP 241 Transfer Case Cut Away...
Page 978: ......
Page 981: ...BORG WARNER 1370 TRANSFER CASE 7D4 3 J...
Page 992: ...7D4 14 BORG WARNER 1370 TRANSFER CASE Figure 26 Installing the Rear Output Yoke...
Page 993: ...BORG WARNER 1370 TRANSFER CASE 7D4 15 Figure 27 BW 1370 Transfer Case...
Page 997: ......
Page 998: ...X 8937...