Opel Frontera UBS. Service manual — part 1068
4D1–34 TRANSFER CASE (STANDARD TYPE)
2. If the measured value exceeds the specified limit, the
gear must be replaced.
Gear inside diameter
Standard : 48.000–48.013 mm (1.8898–1.8903 in)
Limit : 48.10 mm (1.894 in)
226RS040
Clutch Hub Spline Play
1. Set a dial indicator to the clutch hub to measured.
2. Move the clutch hub as far as possible to both the right
and the left.
Note the dial indicator reading.
3. If the measured value exceeds the specified limit, the
clutch hub must be replaced.
Clutch hub spline play
Standard : 0–0.1 mm (0–0.004 in)
Limit : 0.2 mm (0.008 in)
226RS042
Bearings
1. Inspect the condition of all the needles and ball
bearings. Wash bearings thoroughly in a cleaning
solvent. Apply compressed air to the bearings.
NOTE: Do not allow the bearings to spin. Turn them
slowly by hand. Spinning bearings may damage the
rollers.
2. Lubricate the bearings with a light oil and check them
for roughness by slowly turning the race by hand.
Ball Bearing Play
1. Use a dial indicator to measure the ball bearing play.
2. If the measured value exceeds the specified limit, the
ball bearing must be replaced.
Limit : 0.2 mm (0.008 in)
226RS043
Synchronizers
The synchronizer hubs and sliding sleeves are a selected
assembly and should be kept together as originally
assembled.
Clean synchronizer components with clean solvent and
air dry.
Inspect the components for the following:
D
Teeth for wear, scuffs, nicks, burrs or breaks.
D
Keys and springs for wear, cracks or distortion,
replace if these conditions are present.
D
If scuffed, nicked or burred conditions cannot be
corrected with a soft stone or crocus cloth, replace the
component.
Block Ring and Insert Clearance
1. Use a vernier caliper to measure the clearance
between the block ring and the insert.
2. If the measured value exceeds the specified limit, the
block ring and the insert must be replaced.
Block ring and insert clearance
Standard : 2.46–2.74 mm (0.097–0.108 in)
TRANSFER CASE (STANDARD TYPE)
4D1–35
Limit : 3.0 mm (0.118 in)
226RS037
2WD–4WD 3–Cone Synchronizer (Shift On
The Fly model)
1. Use a thickness gauge to measure the clearance
between the block ring and the dog teeth.
2. If the measured value exceeds the specified limit, the
2WD–4WD synchronizer assembly must be
replaced.
Block ring and insert clearance
Standard : 1.5 mm (0.059 in)
Limit : 0.8 mm (0.031 in)
226RW142
Clutch Hub and Insert Clearance
1. Use a thickness gauge to measure the clearance
between the clutch hub and the insert.
2. If the measured value exceeds the specified limit, the
clutch hub and the insert must be replaced.
Clutch hub and insert clearance
Standard : 0.01–0.19 mm (0.0004–0.0075 in)
Limit : 0.3 mm (0.012 in)
226RS038
Detent Springs
1. Inspect the springs for distortion, cracks or wear.
Replace if these conditions are present.
Detent Spring Free Length
1. Use a vernier caliper to measure the detent spring
free length.
4D1–36 TRANSFER CASE (STANDARD TYPE)
2. If the measured value is less than the specified limit,
the detent spring must be replaced.
Detent spring free length
Detent ball
Standard : 23.4 mm (0.921 in)
Limit : 22.8 mm (0.898 in)
Interlock pin
Standard : 1.59 mm (0.063 in)
Limit : 1.53 mm (0.060 in)
220RW035
Detent Spring Tension
1. Use a spring tester to measure the detent spring
tension.
2. If the measured value is less than the specified limit,
the detent spring must be replaced.
Detent spring free length
Detent ball
Compressed height : 18.7 mm (0.736 in)
Standard : 68.6–88.2 N (7.0–9.0kg/15.4–19.8 lb)
Interlock pin
Compressed height : 11.5 mm (0.453 in)
Standard : 9.8 N (1.0kg/2.2 lb)
220RS013
Shift Arm
1. Inspect the shift arms for wear, distortion or scoring.
Replace if these conditions are present.
Shift Arm Thickness
1. Use a micrometer to measure the shift arm thickness.
2. If the measured value is less than the specified limit,
the shift arm must be replaced.
Shift arm thickness
Standard : 9.60–9.85 mm (0.378–0.388 in)
Limit : 9.0 mm (0.354 in)
230RS006
TRANSFER CASE (STANDARD TYPE)
4D1–37
Reassembly
1. Put the transfer case (with oil seal) as the following
illustration.
Input shaft oil seal (1) replacement
1. Remove the oil seal from the transfer case.
2. Apply engine oil to the oil seal outer surfaces.
3. Apply recommended grease (BESCO L2) or
equivalent to the oil seal lip.
4. Use the oil seal installer 5–8840–2279–0
(J–38592) to install the oil seal to the transfer
case.
220RW106
Front output shaft oil seal (2) replacement
1. Remove the oil seal from the transfer case.
2. Apply engine oil to the oil seal outer surfaces.
3. Apply recommended grease (BESCO L2) or
equivalent to the oil seal lip.
4. Use the oil seal installer 5–8840–2281–0
(J–38594) to install the oil seal to the transfer
case.
220RW107
Legend
(2) Front output shaft oil seal
2. Apply chassis grease (3) to the sub–gear (23) and the
counter gear (22) thrust surfaces.
226RW134
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