recommended oil OPEL FRONTERA 1998 Owner's Manual

7B–64MANUAL TRANSMISSION
6. Check that the top gear shaft and mainshaft
rotate.
36. Install the transfer adapter.
1. Clean up the fitting surface.
2. Apply recommended liquid gasket (THREE
BOND 1281 or equivalent), as shown.
NOTE:
Don’t dry the liquid gasket.
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3. Using a plastic hammer, tap the transfer adapter
and attach it to the intermediate plate.
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4. Using 10 bolts, install the transfer adapter.
Torque: 37 Nꞏm (3.8 kgꞏm/27 lb ft)
NOTE:
Tighten the all bolts evenly.
Don’t damage the lip of the oil seal.
Install the wire clamp (9) to the transfer adapter.
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37. Install the gear control box.
1. Align the projection of the shift lever housing to
the shaft rod groove, and install the gear control
rod.
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DIFFERENTIAL (REAR 220mm)
4A2A–33
3. After measuring dimensions of each of the above
sections, proceed with the adjustment in the following
manner:
Adjust the clearance to satisfy the equation below.
{(F – B) + G – H}=0.05 – 0.20 mm
Also, select the thrust washers so that the
dimensional difference between the back surfaces of
the left and right pressure rings to the thrust washers
is 0.05mm or less.
Thickness : 1.5mm (0.059 in)
1.6 mm(0.063 in)
1.7 mm(0.067 in)
NOTE: When assembling the parts, apply recommended
gear oil sufficiently to each of the parts, especially, to the
contact surfaces and sliding surfaces.
1. Install Differential cage B.
2. Install Thrust washer.
3. Install Spring disc.
When assembling the spring disc, make sure the
mounting direction is correct as shown in figure.
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Legend
(1) Friction Plate
(2) Spring Disc
(3) Friction Disc
4. Install Friction disc.
5. Install Friction plate.6. Install Friction plate.
7. Install Friction disc.
8. Install Friction plate.
9. Install Friction disc.
10. Install Friction plate.
11. Install Pressure ring.
12. Install Side gear.
13. Install Pinion and pinion shaft.
14. Install Side gear.
15. Install Pressure ring.
16. Install Friction plate.
17. Install Friction disc.
18. Install Friction plate.
19. Install Friction disc.
20. Install Friction plate.
21. Install Friction plate.
22. Install Friction plate.
23. Install Spring disc.
When assembling the spring disc, make sure the
mounting direction is correct.
24. Install Spring disc.
25. Install Thrust washer.
26. Install Differential cage A.
27. Install Screw.
Matching the guide marks of the differential cages A
and B, tighten the screws evenly in the diagonal
order.
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DIFFERENTIAL (REAR 244mm)
4A2B–33
3. After measuring dimensions of each of the above
sections, proceed with the adjustment in the following
manner:
Adjust the clearance to satisfy the equation below.
{(F – B) + G – H}=0.05 – 0.20 mm
Also, select the thrust washers so that the
dimensional difference between the back surfaces of
the left and right pressure rings to the thrust washers
is 0.05mm or less.
Thickness : 1.5mm (0.059 in)
1.6 mm(0.063 in)
1.7 mm(0.067 in)
NOTE: When assembling the parts, apply recommended
gear oil sufficiently to each of the parts, especially, to the
contact surfaces and sliding surfaces.
1. Install Differential cage B.
2. Install Thrust washer.
3. Install Spring disc.
When assembling the spring disc, make sure the
mounting direction is correct as shown in figure.
425RY004
Legend
(1) Friction Plate
(2) Spring Disc
(3) Friction Disc
4. Install Friction disc.
5. Install Friction plate.6. Install Friction plate.
7. Install Friction disc.
8. Install Friction plate.
9. Install Friction disc.
10. Install Friction plate.
11. Install Pressure ring.
12. Install Side gear.
13. Install Pinion and pinion shaft.
14. Install Side gear.
15. Install Pressure ring.
16. Install Friction plate.
17. Install Friction disc.
18. Install Friction plate.
19. Install Friction disc.
20. Install Friction plate.
21. Install Friction plate.
22. Install Friction plate.
23. Install Spring disc.
When assembling the spring disc, make sure the
mounting direction is correct.
24. Install Spring disc.
25. Install Thrust washer.
26. Install Differential cage A.
27. Install Screw.
Matching the guide marks of the differential cages A
and B, tighten the screws evenly in the diagonal
order.
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DRIVE LINE CONTROL SYSTEM (TOD) 4B2–116
StepActionYe sNo
1Are the front and rear tires in specified size?
Go to Step 2
Replace the tires
with specified
ones, and service
the new tires.
Go to Step 16
2Is the tire pressure correct?
Go to Step 3
In flate tries to
recommended
pressure.
Go to Step 16
3Are the tires free from abnormal wear?
Go to Step 4
Replace the tires
with specified
ones, and service
the new tires.
Go to Step 16
4Are different types of tires used?
Go to Step 5
Replace the tires
with specified
ones, and service
the new tires.
Go to Step 16
51. Start the engine.
2. Shift the transfer lever to the high position and switch the 4WD
AUTO SW to 4WD position.
3. Fully turn the steering to the left (or right) end, and select the D
range and start the creep run.
Does the tight corner braking occur? Is the judder with chug-chug
sound observed? * Use caution on the operation.
Go to Step 6 Go to Step 11
61. Shift the transfer lever to the high position and switch the 4WD
AUTO SW to the 2H position.
2. Fully turn the steering to the left (or right) end, and select the D
range and start the creep run.
Does the tight corner braking occur? Is the judder with chug-chug
sound observed? * Use caution on the operation.
Go to Step 7 Go to Step 14
7Is an LSD mounted to the rear differential? Go to Step 8 Go to Step 9
8Is the genuine LSD oil used in the rear differential?
Go to Step 9
Replace the
differential oil.
Go to Step 16
9Does the engine output the power correctly?
Go to Step 10
Check the
engine.
Go to Step 16
10Do the speed sensors work correctly? (Check trouble codes.)The ECU has
failed. Replace
the ECU.
Go to Step 16
Replace the
speed sensors.
Go to Step 16
11Is the tight corner braking observed only when the brake is
applied?
Go to Step 12
Conduct full
steering under
WOT.
Go to Step 5
121. Turn on the starter switch.
Is the battery voltage observed between terminals 11 and 19?
Go to Step 13
Repair the circuit
of terminal 11
(ABS IN).
Go to Step 16

4D1–8
TRANSFER CASE (STANDARD TYPE)
Transfer Rear Oil Seal
Removal
1. Disconnect the rear propeller shaft from the transfer
case side.
2. Remove end nut and rear companion flange, using
the companion flange holder 5–8840–0133–0
(J–8614–11).
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3. Use the universal puller to remove the rear
companion flange and O–ring.
4. Remove the oil seal from the transfer case.
Installation
To install, follow the removal steps in the reverse order,
noting the following points:
1. Install oil seal and apply engine oil to the oil seal outer
surfaces.
2. Apply the recommended grease (BESCO L2) or
equivalent to the oil seal lip.
3. Use the oil seal installer 5–8840–2292–0 (J–39208)
to install the rear seal to the transfer rear case.
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4. Install the rear companion flange and O–ring.
5. Use the companion flange holder 5–8840–0133–0
(J–8614–11) to install a new end nut and tighten to the
specified torque.
Torque: 167 Nꞏm (17.0kgꞏm/123 lb ft)
6. Use the punch 5–8840–2293–0 (J–39209) to stake
the end nut at two spots.
NOTE: Be sure to confirm that there is no crack at the
staked portion of the end nut after staking.
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TRANSFER CASE (STANDARD TYPE)
4D1–17
2. Remove the rear output shaft assembly (1) from the
transfer rear cover (with oil seal).
3. Remove ball bearing (8), using a bench press and the
bearing remover 5–8840–0015–0 (J–22912–01) .
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4. Remove the speedometer drive gear (7).
5. Remove the ball (6).
6. Remove the bearing snap ring (5), using a pair of snap
ring pliers.
7. Remove the ball bearing (4) from the rear output
shaft, using a bench press and the bearing remover
5–8840–0015–0 (J–22912–01).
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Inspection and Repair
Refer to “TRANSFER CASE ASSEMBLY” in this section
for inspection and repair.
Reassembly
1. Install transfer rear cover (with oil seal).
Oil seal replacement
Remove the oil seal from the transfer rear cover.
Apply engine oil to the oil seal outer surfaces.
Fill in recommended grease (BESCO L2) or
equivalent in the oil seal lip.
Use the oil seal installer 5–8840–2292–0 (J–39208)
to install the rear oil seal to the transfer rear cover.
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2. Set the snap ring (3), and install ball bearing (4) to the
rear output shaft (2), using the ball bearing installer
5–8840–2159–0 (J–37223) and the adapter
5–8840–2192–1 (J–37486–A).
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4D1–24
TRANSFER CASE (STANDARD TYPE)
2. Remove the rear output shaft assembly (1) from the
transfer rear cover (with oil seal).
3. Remove ball bearing (8), using a bench press and the
bearing remover 5–8840–0015–0 (J–22912–01) .
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4. Remove the speedometer drive gear (7).
5. Remove the ball (6).
6. Remove the bearing snap ring (5), using a pair of snap
ring pliers.
7. Remove the ball bearing (4) from the rear output
shaft, using a bench press and the bearing remover
5–8840–0015–0 (J–22912–01).
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Inspection and Repair
Refer to “TRANSFER CASE ASSEMBLY” in this section
for inspection and repair.
Reassembly
1. Install transfer rear cover (with oil seal).
Oil seal replacement
Remove the oil seal from the transfer rear cover.
Apply engine oil to the oil seal outer surfaces.
Fill in recommended grease (BESCO L2) or
equivalent in the oil seal lip.
Use the oil seal installer 5–8840–2292–0 (J–39208)
to install the rear oil seal to the transfer rear cover.
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2. Set the snap ring (3), and install ball bearing (4) to the
rear output shaft (2), using the ball bearing installer
5–8840–2159–0 (J–37223) and the adapter
5–8840–2192–1 (J–37486–A).
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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.
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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.
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Legend
(2) Front output shaft oil seal
2. Apply chassis grease (3) to the sub–gear (23) and the
counter gear (22) thrust surfaces.
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6A–11
ENGINE MECHANICAL
Condition CorrectionPossible cause
Engine overheatingLevel of Engine Coolant too lowReplenish
Fan clutch defectiveReplace
Incorrect fan installedReplace
Thermostat defectiveReplace
Engine Coolant pump defectiveCorrect or replace
Radiator cloggedClean or replace
Radiator filler cap defectiveReplace
Level of oil in engine crankcase too
low or wrong engine oilChange or replenish
Resistance in exhaust system
increasedClean exhaust system or replace
defective parts
Throttle Position Sensor adjustment
incorrectReplace with Throttle Valve ASM
Throttle Position Sensor circuit open
or shortedCorrect or replace
Cylinder head gasket damagedReplace
Engine overcoolingThermostat defectiveReplace (Use a thermostat set to
open at 82
C (180F))
Engine lacks compression————Refer to Hard Start
OthersTire inflation pressure abnormalAdjust to recommended pressures
Brake dragAdjust
Clutch slippingAdjust or replace
Level of oil in engine crankcase too
highCorrect level of engine oil
Exhaust Gas Recirculation Valve
defectiveReplace
Engine Noisy
Abnormal engine noise often consists of various noises
originating in rotating parts, sliding parts and othermoving parts of the engine. It is, therefore, advisable to
locate the source of noise systematically.
Condition
Possible causeCorrection
Noise from crank journals or from
crank bearings
(Faulty crank journals and crankOil clearance increased due to worn
crank journals or crank bearingsReplace crank bearings and
crankshaft or regrind crankshaft and
install the undersize bearing
yj
bearings usually make dull noise that
becomes more evident when
accelerating)Crankshaft out of roundReplace crank bearings and
crankshaft or regrind crankshaft and
install the undersize bearing
Crank bearing seizedCrank bearing seized. Replace crank
bearings and crankshaft or regrind
crankshaft and install the undersize
bearing
Troubleshooting Procedure
Short out each spark plug in sequence using insulated
spark plug wire removers. Locate cylinder with defectivebearing by listening for abnormal noise that stops when
spark plug is shorted out.

6A–15
ENGINE MECHANICAL
Condition CorrectionPossible cause
Oil leaking into combustion
chambers due topoor seal in valve
Valve stem oil seal defectiveReplace
chambers due to oor seal in valve
systemValve stem or valve guide wornReplace valve and valve guide
Oil leaking into combustion
chambers due to poor seal in cylinder
t
Cylinders and pistons worn
excessivelyReplace cylinder body assembly and
pistons
partsPiston ring gaps incorrectly
positionedCorrect
Piston rings set with wrong side upCorrect
Piston ring stickingReplace cylinder body assembly and
pistons
Piston ring and ring groove wornReplace pistons and others
Return ports in oil rings cloggedClean piston and replace rings
Positive Crankcase Ventilation
System malfunctioningPositive Crankcase Ventilation Valve
cloggedClean
OthersImproper oil viscosityUse oil of recommended S.A.E.
viscosity
Continuous high speed driving
and/or severe usage such as trailer
towingContinuous high speed operation
and/or severe usage will normally
cause increased oil consumption
Fuel Consumption Excessive
ConditionPossible causeCorrection
Trouble in fuel systemMixture too rich or too lean due to
trouble in fuel injection systemRefer to “Abnormal Combustion”
Fuel cut function does not workRefer to “Abnormal Combustion”
Trouble in ignition systemMisfiring or abnormal combustion
due to trouble in ignition systemRefer to “Hard Start” or “Abnormal
Combustion”
OthersEngine idle speed too highReset Idle Air Control Valve
Returning of accelerator control
sluggishCorrect
Fuel system leakageCorrect or replace
Clutch slippingCorrect
Brake dragCorrect
Selection of transmission gear
incorrectCaution operator of incorrect gear
selection
Excessive Exhaust Gas
Recirculation flow due to trouble in
Exhaust Gas Recirculation systemRefer to “Abnormal Combustion”