OPEL FRONTERA 1998 Workshop Manual

4D2–24
TRANSFER CASE (TOD)
Disassembly
1. Remove the ball bearing (for front output shaft).
2. Expand the snap ring through the opening in the
planetary gear assembly.
261RW040
3. While expanding the snap ring, remove the input
shaft, ball bearing, carrier assembly, and thrust plate
from the transfer case.
261RW037
4. Remove the snap ring from the transfer case.
261RW036
5. Using snap ring pliers, remove the snap ring before
the ball bearing.
265RW009

4D2–25 TRANSFER CASE (TOD)
6. Using the bearing remover 5-8840-0015-0
(J-22912-01), remove the ball bearing from the input
shaft.
265RW014
7. Remove the thrust plate.
8. Remove the carrier assembly.
9. Remove the snap ring from the carrier assembly.
265RW006
10. Remove the circular hub.
11. Remove the snap ring before the ring gear.
261RW025
12. Using the replacer 5-8840-2413-0 (J-42806), remove
the ring gear.
NOTE: Removing the ring gear needs a high-load press.
This means the transfer case may be damaged. To
remove and replace the ring gear, it is recommended that
the transfer case assembly should be replaced.
261RW050

4D2–26
TRANSFER CASE (TOD)
265RW007
Inspection and Repair
When wear, damage, or any other defects are observed
during the inspection, the part or parts must be repaired or
replaced. Wash all the parts with clean solvent, and
check that old oil, metallic particles, dirt, or foreign
materials are completely removed. Blow the air into oil
holes and grooves to remove foreign materials or residual
detergent.
Chain
Check whether the face that contacts the sprocket is
free from excessive wear or damage. If defects are
observed, replace the part.
If the chain interference mark is found on the inside
w a l l o f t h e t r a n s f e r c o v e r o r t h e c h a i n i s s o s l a c k t h a t a
skipped engagement occurs between the chain and
sprocket, replace the chain.
Sprocket
Check whether the sprocket tooth surface is
excessively worn or damaged, and there is evidence
of burrs, chipping, wear, or damage on the gear
spline. Remove minor flaws or scratches with oil
stone. If excessive wear or damage is observed,
replace the part.
If excessive wear or damage is observed on the
sprocket inside sliding surface, replace the part.
Gear
Check whether the gear tooth surface is excessively
worn or damaged, and there is evidence of burrs,
chipping, wear, or damage on the gear spline.
Remove minor flaws or scratches with oil stone. If
excessive wear or damage is observed, replace the
part.
Thickness of Reduction Hub
Measure the thickness with a micrometer.
If the measurement exceeds the limit, replace the
reduction hub.
Standard : 3.05-3.30 mm (0.120-0.130 in)
Allowable limit : 2.5 mm (0.098 in)
265RW005
Lock-up Sleeve
Mount the mechanical lock hub, drive sprocket
assembly, and lock-up sleeve to the output shaft.
If the lock-up sleeve does not move smoothly, replace
the sleeve.
NOTE: Apply ATF to the area engaging the gear.
Thickness of Lock-up Sleeve
If the measurement exceeds the limit, replace the
lock-up sleeve.
Standard : 7.16-7.32 mm (0.282-0.288 in)
Allowable limit : 7.9 mm (0.311 in)
266RW014

4D2–27 TRANSFER CASE (TOD)
Reduction Fork
Check the reduction fork and shaft for wear, distortion,
and scratches. If defects are observed, replace the
parts.
Thickness of Reduction Fork
If the measurement exceeds the limit, replace the
reduction fork.
Standard : 3.41-3.79 mm (0.134-0.149 in)
Allowable limit : 4.4 mm (0.173 in)
261RW026
Lock-up Fork
Check the lock-up fork and shaft for wear, distortion,
and scratches. If defects are observed, replace the
parts.
Thickness Lock-up Fork
If the measurement exceeds the limit, replace the
lock-up fork.
Standard : 6.99-7.09 mm (0.275-0.279 in)
Allowable limit : 6.3 mm (0.248 in)
261RW027
Bearing
Check the profile of the needle, roller, ball, and thrust
bearings. Wash the bearings with clean solvent
completely, and dry with air.
NOTE: If the bearing is rotated excessively, the rollers
may be damaged. So, rotate the bearing slowly with your
hand. Apply grease to the bearing, and check the
smoothness of the bearing while slowly rotating the race
with your hand.
Use a dial indicator to measure the ball bearing play.
Allowable limit : 0.23 mm (0.009 in)
226RW143
Lock-up Fork Spring
Check the lock-up fork spring for distortion, cracking,
and wear. If defects are observed, replace the part.
Free Length of the Lock-up Fork Spring
If the measurement exceeds the limit, replace the
spring.
Standard : 60.96 mm (2.40 in)
Allowable limit : 55.0 mm (2.17 in)
220RW045

4D2–28
TRANSFER CASE (TOD)
Tension of Lock-up Fork Spring
If the measurement exceeds the limit, replace the
spring. (When compressed to 41.4 mm)
Standard : 27.1-33.8 N {2.76-3.45 kg/6.08-7.61 Ib}
Allowable limit : 24.5 N {2.5 kg/5.5 Ib}
014RW048
Tension of Detent Spring Assembly
If the measurement exceeds the limit, replace the
spring. N {kg} (When compressed by 3 mm from the
free length)
Standard : 139 N -203 {14.2-20.7 kg/31.3-45.6 Ib}
Allowable limit : 130 N {13.3 kg/29.3 Ib}
261RW041
Oil Pump
Remove foreign materials from the strainer. If the
strainer is damaged, replace it.
If the area into which the shaft is inserted is
excessively worn or damaged, replace the pump.
Multi Plate Disk Clutch
If the burned, mirror-surfaced clutch facing, or
scraping is observed on the clutch plates, clutch
housing, armature plate, and insulator washer,
replace the part or parts.
266RW003
Coil Assembly
Check the resistance of the coil with a tester. If
defects are observed, replace the assembly.
* (ordinary temperature)
Standard : 1.4
2.0
Allowable limit : 1.05.0
261RW031

4D2–29 TRANSFER CASE (TOD)
Cam Pulley, Cam Ball, and Cam&Coil
Housing
Check the cam balls and cam for excessive wear or
damage. If defective, replace the parts.
266RW016
The Parts 4H and 4L Switch
Check the continuity of 4H and 4L switch.
261RW003
261RW049
Switch
Stroke4H Switch
Signal4L Switch
SignalThe
correspo
nding
p
ositionB to Switch
BodyA to Cosition
of
transfer
lever
1OpenOpenHigh
2OpenClose4L
3CloseCloseNeutral

4D2–30
TRANSFER CASE (TOD)
Transfer Case
Disassembled View
265RW015
Legend
(1) Transfer Case
(2) Ball Bearing
(3) Ring Gear
(4) Snap Ring
(5) Input Shaft and Carrier Assembly
(6) Snap Ring(7) Ball Bearing
(8) Snap Ring
(9) Thrust Plate
(10) Carrier Assembly
(11) Snap Ring
(12) Circular Hub
(13) Input Shaft
Reassembly
1. Remove the oil seal from the transfer case.
2. Apply engine oil to the circumference of the new oil
seal and fill the lip with grease (Besco L2 or
equivalent).

4D2–31 TRANSFER CASE (TOD)
3. Using the front output shaft oil seal installer
5-8840-2410-0 (J-42807), install the oil seal to the
transfer case.
261RW053
Front Output Shaft Oil Seal
Distance between the transfer case end and oil seal.
NOTE: When installing the oil seal to the specified
dimension, be careful not to damage it.
Distance : 0.93 — 1.43mm (0.037 — 0.056 in)
A04RW003
4. Using the input shaft (main) oil seal installer
5-8840-2411-0 (J-42808), install the oil seal to the
transfer case.
261RW055
Input Shaft Oil Seal
Distance between the transfer case end and oil seal.
NOTE: When installing the oil seal to the specified
dimension, be careful not to damage it.
Distance : 3.25 — 3.75mm (0.13 — 0.15 in)
A04RW002

4D2–32
TRANSFER CASE (TOD)
5. Using the installer 5-8840-2416-0 (J-42809), press-fit
the ring gear.
Pay attention to the following points.
Identify the correct direction of gear.
Do not damage the gear.
Do not press-fit the ring gear slantingly.
Press-fit the ring gear to the innermost.
Remove burrs generated by press-fitting.
If the transfer case has serrations, match them with
those of the gear and press-fit the gear.
261RW054
261RW034
6. Install the snap ring to the transfer case.
7. Install the circular hub.
8. Install the snap ring to the carrier.
9. Mount the carrier assembly to the input shaft.
10. Check the direction of thrust plate and mount it to the
input shaft.
265RW008
11. Mount the ball bearing to the input shaft so that the
snap ring will be installed to the input shaft.
265RW003
12. Install the snap ring to the input shaft.
13. Install the snap ring to the transfer case.

4D2–33 TRANSFER CASE (TOD)
14. Using the snap ring pliers, expand the snap ring
through the opening between the ring gear and carrier
assembly and securely install the input shaft and
carrier assembly.
261RW038
15. Install the ball bearing (for front output shaft)