Isuzu Trooper (2000 year). Manual — part 84
4A2–18 DIFFERENTIAL (REAR)
4. Set the dial indicator J–8001 to “0”. Place it on the
mounting post of the gauging arbor with the
contact button touching the indicator pad. Force
the dial indicator downward until the needle has
made a half turn clockwise. Tighten down the dial
indicator in this position.
425RS020
Legend
(1) Dial Indicator
(2) Ganging Arbor
(3) Plunger
(4) Gauge Plate
5. Position the plunger on the gauge plate. Move the
gauging arbor slowly back and forth and locate
the position at which the dial indicator shows the
greatest defection. At this point, once again set
the dial indicator to “0”. Repeat the procedure to
verify the “0” setting.
425RS021
6. After the ZERO setting is obtained, rotate the
gauging arbor until the dial indicator rod does not
touch the gauging plate. Record the number the
dial indicator needle points to.
425RS022
Legend
(1) Example=Dial indicator reading od 0.085
7. Record the pinion depth code on the head of the
drive pinion. The number indicates a necessary
change in the pinion mounting distance. A plus
number indicates the need for a greater mounting
distance (which can be achieved by decreasing
the shim thickness). A minus number indicates
the need for a smaller mounting distance (which
can be achieved by increasing the shim
thickness). If examination reveals pinion depth
code “0”, the pinion is “nominal”.
425RS023
DIFFERENTIAL (REAR)
4A2–19
8. Select the shim thickness using the chart;
Pinion
marking
Dial
indicator
reading
(inches)
+10
+9
+8
+7
+6
+5
+4
+3
+2
+1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
0.080
2.12
(0.0835)
2.12
(0.0835)
0.081
2.12
(0.0835)
2.12
(0.0835)
2.14
(0.0843)
2.14
(0.0843)
2.16
(0.0850)
0.082
2.12
(0.0835)
2.12
(0.0835)
2.14
(0.0843)
2.14
(0.0843)
2.16
(0.0850)
2.16
(0.0850)
2.18
(0.0858)
2.18
(0.0858)
0.083
2.12
(0.0835)
2.12
(0.0835)
2.14
(0.0843)
2.14
(0.0843)
2.16
(0.0850)
2.16
(0.0850)
2.18
(0.0858)
2.18
(0.0858)
2.20
(0.0866)
2.20
(0.0866)
0.084
2.12
(0.0835)
2.12
(0.0835)
2.14
(0.0843)
2.14
(0.0843)
2.16
(0.0850)
2.16
(0.0850)
2.18
(0.0858)
2.18
(0.0858)
2.20
(0.0866)
2.20
(0.0866)
2.22
(0.0874)
2.22
(0.0874)
0.085
2.12
(0.0835)
2.12
(0.0835)
2.14
(0.0843)
2.14
(0.0843)
2.16
(0.0850)
2.16
(0.0850)
2.18
(0.0858)
2.18
(0.0858)
2.20
(0.0866)
2.20
(0.0866)
2.22
(0.0874)
2.22
(0.0874)
2.24
(0.0822)
2.24
(0.0822)
2.26
(0.0890)
0.086
2.12
(0.0835)
2.12
(0.0835)
2.14
(0.0843)
2.14
(0.0843)
2.16
(0.0850)
2.16
(0.0850)
2.18
(0.0858)
2.18
(0.0858)
2.20
(0.0866)
2.20
(0.0866)
2.22
(0.0874)
2.22
(0.0874)
2.24
(0.0882)
2.24
(0.0882)
2.26
(0.0890)
2.26
(0.0890)
2.28
(0.0898)
2.28
(0.0898)
0.087
2.12
(0.0835)
2.12
(0.0835)
2.14
(0.0843)
2.14
(0.0843)
2.16
(0.0850)
2.16
(0.0850)
2.18
(0.0858)
2.18
(0.0858)
2.20
(0.0866)
2.20
(0.0866)
2.22
(0.0874)
2.22
(0.0874)
2.24
(0.0882)
2.24
(0.0882)
2.26
(0.0890)
2.26
(0.0890)
2.28
(0.0898)
2.28
(0.0898)
2.30
(0.0905)
2.30
(0.0905)
0.088
2.14
(0.0843)
2.14
(0.0843)
2.16
(0.0850)
2.16
(0.0850)
2.18
(0.0858)
2.18
(0.0858)
2.20
(0.0866)
2.20
(0.0866)
2.22
(0.0874)
2.22
(0.0874)
2.24
(0.0882)
2.24
(0.0882)
2.26
(0.0890)
2.26
(0.0890)
2.28
(0.0898)
2.28
(0.0898)
2.30
(0.0905)
2.30
(0.0905)
2.32
(0.0914)
2.32
(0.0914)
2.34
(0.0921)
0.089
2.16
(0.0850)
2.18
(0.0858)
2.18
(0.0858)
2.20
(0.0866)
2.20
(0.0866)
2.22
(0.0874)
2.22
(0.0874)
2.24
(0.0882)
2.24
(0.0882)
2.26
(0.0890)
2.26
(0.0890)
2.28
(0.0898)
2.28
(0.0898)
2.30
(0.0905)
2.30
(0.0905)
2.32
(0.0914)
2.32
(0.0914)
2.34
(0.0921)
2.34
(0.0921)
2.36
(0.0929)
2.36
(0.0929)
0.090
2.18
(0.0858)
2.20
(0.0866)
2.20
(0.0866)
2.22
(0.0874)
2.22
(0.0874)
2.24
(0.0882)
2.24
(0.0882)
2.26
(0.0890)
2.26
(0.0890)
2.28
(0.0898)
2.28
(0.0898)
2.30
(0.0905)
2.30
(0.0905)
2.32
(0.0914)
2.32
(0.0914)
2.34
(0.0921)
2.34
(0.0921)
2.36
(0.0929)
2.36
(0.0929)
2.38
(0.0937)
2.38
(0.0937)
0.091
2.20
(0.0866)
2.22
(0.0874)
2.22
(0.0874)
2.24
(0.0882)
2.24
(0.0882)
2.26
(0.0890)
2.26
(0.0890)
2.28
(0.0898)
2.28
(0.0898)
2.30
(0.0905)
2.30
(0.0905)
2.32
(0.0914)
2.32
(0.0914)
2.34
(0.0921)
2.34
(0.0921)
2.36
(0.0929)
2.36
(0.0929)
2.38
(0.0937)
2.38
(0.0937)
2.40
(0.0945)
2.40
(0.0945)
0.092
2.24
(0.0882)
2.24
(0.0882)
2.26
(0.0890)
2.26
(0.0890)
2.28
(0.0898)
2.28
(0.0898)
2.30
(0.0905)
2.30
(0.0905)
2.32
(0.0914)
2.32
(0.0914)
2.34
(0.0921)
2.34
(0.0921)
2.36
(0.0929)
2.36
(0.0929)
2.38
(0.0937)
2.38
(0.0937)
2.40
(0.0945)
2.40
(0.0945)
2.42
(0.0953)
2.42
(0.0953)
2.44
(0.0961)
0.093
2.26
(0.0890)
2.28
(0.0898)
2.28
(0.0898)
2.30
(0.0905)
2.30
(0.0905)
2.32
(0.0914)
2.32
(0.0914)
2.34
(0.0921)
2.34
(0.0921)
2.36
(0.0929)
2.36
(0.0929)
2.38
(0.0937)
2.38
(0.0937)
2.40
(0.0945)
2.40
(0.0945)
2.42
(0.0953)
2.42
(0.0953)
2.44
(0.0961)
2.44
(0.0961)
2.46
(0.0969)
2.46
(0.0969)
0.094
2.28
(0.0898)
2.30
(0.0905)
2.30
(0.0905)
2.32
(0.0914)
2.32
(0.0914)
2.34
(0.0921)
2.34
(0.0921)
2.36
(0.0929)
2.36
(0.0929)
2.38
(0.0937)
2.38
(0.0937)
2.40
(0.0945)
2.40
(0.0945)
2.42
(0.0953)
2.42
(0.0953)
2.44
(0.0961)
2.44
(0.0961)
2.46
(0.0969)
2.46
(0.0969)
2.48
(0.0977)
2.48
(0.0977)
0.095
2.30
(0.0905)
2.32
(0.0914)
2.32
(0.0914)
2.34
(0.0921)
2.34
(0.0921)
2.36
(0.0929)
2.36
(0.0929)
2.38
(0.0937)
2.38
(0.0937)
2.40
(0.0945)
2.40
(0.0945)
2.42
(0.0953)
2.42
(0.0953)
2.44
(0.0961)
2.44
(0.0961)
2.46
(0.0969)
2.46
(0.0969)
2.48
(0.0977)
2.48
(0.0977)
2.50
(0.0987)
2.50
(0.0987)
0.096
2.34
(0.0921)
2.34
(0.0921)
2.36
(0.0929)
2.36
(0.0929)
2.38
(0.0937)
2.38
(0.0937)
2.40
(0.0945)
2.40
(0.0945)
2.42
(0.0953)
2.42
(0.0953)
2.44
(0.0961)
2.44
(0.0961)
2.46
(0.0969)
2.46
(0.0969)
2.48
(0.0977)
2.48
(0.0977)
2.50
(0.0987)
2.50
(0.0987)
2.52
(0.0992)
2.52
(0.0992)
2.54
(0.1000)
0.097
2.36
(0.0929)
2.38
(0.0937)
2.38
(0.0937)
2.40
(0.0945)
2.40
(0.0945)
2.42
(0.0953)
2.42
(0.0953)
2.44
(0.0961)
2.44
(0.0961)
2.46
(0.0969)
2.46
(0.0969)
2.48
(0.0977)
2.48
(0.0977)
2.50
(0.0984)
2.50
(0.0984)
2.52
(0.0992)
2.52
(0.0922)
2.54
(0.1000)
2.54
(0.1000)
2.56
(0.1008)
2.56
(0.1008)
0.098
2.38
(0.0937)
2.40
(0.0945)
2.40
(0.0945)
2.42
(0.0953)
2.42
(0.0953)
2.44
(0.0961)
2.44
(0.0961)
2.46
(0.0969)
2.46
(0.0969)
2.48
(0.0977)
2.48
(0.0977)
2.50
(0.0984)
2.50
(0.0984)
2.52
(0.0992)
2.52
(0.0922)
2.54
(0.1000)
2.54
(0.1000)
2.56
(0.1008)
2.56
(0.1008)
2.58
(0.1016)
2.58
(0.1016)
0.099
2.42
(0.0953)
2.42
(0.0953)
2.44
(0.0961)
2.44
(0.0961)
2.46
(0.0969)
2.46
(0.0969)
2.48
(0.0977)
2.48
(0.0977)
2.50
(0.0984)
2.50
(0.0984)
2.52
(0.0992)
2.52
(0.0922)
2.54
(0.1000)
2.54
(0.1000)
2.56
(0.1008)
2.56
(0.1008)
2.58
(0.1016)
2.58
(0.1016)
0.000
2.44
(0.0961)
2.46
(0.0969)
2.46
(0.0969)
2.48
(0.0977)
2.48
(0.0977)
2.50
(0.0984)
2.50
(0.0984)
2.52
(0.0992)
2.52
(0.0922)
2.54
(0.1000)
2.54
(0.1000)
2.56
(0.1008)
2.56
(0.1008)
2.58
(0.1016)
2.58
(0.1016)
0.001
2.46
(0.0969)
2.48
(0.0977)
2.48
(0.0977)
2.50
(0.0984)
2.50
(0.0984)
2.52
(0.0992)
2.52
(0.0922)
2.54
(0.1000)
2.54
(0.1000)
2.56
(0.1008)
2.56
(0.1008)
2.58
(0.1016)
2.58
(0.1016)
0.002
2.48
(0.0977)
2.50
(0.0984)
2.50
(0.0984)
2.52
(0.0992)
2.52
(0.0922)
2.54
(0.1000)
2.54
(0.1000)
2.56
(0.1008)
2.56
(0.1008)
2.58
(0.1016)
2.58
(0.1016)
0.003
2.52
(0.0992)
2.52
(0.0922)
2.54
(0.1000)
2.54
(0.1000)
2.56
(0.1008)
2.56
(0.1008)
2.58
(0.1016)
2.58
(0.1016)
0.004
2.54
(0.1000)
2.56
(0.1008)
2.56
(0.1008)
2.58
(0.1016)
2.58
(0.1016)
0.005
2.56
(0.1008)
2.58
(0.1016)
2.58
(0.1016)
0.006
2.58
(0.1016)
4A2–20 DIFFERENTIAL (REAR)
4. Place the shim (1) on the drive pinion, then install the
inner bearing (2) onto the pinion by using installer
J–42828 and a press .
NOTE: Do not apply pressure to the roller cage. Apply
pressure only to the inner race.
425RW024
5. Install collapsible spacer. Discard the used
collapsible spacer and install a new one.
6. Install drive pinion shaft assembly.
7. Install outer bearing and oil seal slinger.
8. Use oil seal installer J–37263 to install a new oil seal
that has grease on seal lip.
425RS025
9. Install flange assembly.
10. Install flange nut and washer.
1. Apply lubricant to the pinion threads.
2. Using the pinion flange holder J–8614–01, tighten
the nut only enough to remove the shaft end play.
NOTE: Discard used flange nut and install new one.
415RW006
3. Adjust pinion bearing preload.
a. Measure the bearing preload by using a torque
meter and note the scale reading required to
rotate the flange.
b. Continue tightening flange nut until the specified
starting torque is obtained.
Starting torque: 1.1–1.6 N·m (10–14 lb in)
NOTE:
a. Do not overtighten or loosen and then retighten the
nut.
b. Pinion nut torque should be in the range of
298–380 N·m (220–281 Ib ft).
425RW018
DIFFERENTIAL (REAR)
4A2–21
4. Using punch J–39209, stake the flange nut at two
points.
NOTE: When staking, be sure to turn the nut to ensure
that there is no change in bearing preload. Make sure of
preload again as instructed in 3).
425RS028
11. Adjust ring gear backlash.
1. Attach the side bearing to the differential
assembly without shims by using installer
J–42829 and grip J–8092.
425RW003
2. Insert the differential cage assembly with bearing
outer races into the side bearing bores of the
carrier.
425RS030
3. Using two sets of feeler gauges, insert a feeler
stock of sufficient thickness between each
bearing outer race and the carrier to remove all
end play. Make certain the feeler stock is pushed
to the bottom of the bearing bores.
Mount the dial indicator J–8001 on the carrier so
that the indicator stem is at right angles to a tooth on
the ring gear.
425RS031
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