OPEL FRONTERA 1998 Workshop Manual

CLUTCH7C–1
TRANSMISSION
CLUTCH
CONTENTS
Service Precaution 7C–1. . . . . . . . . . . . . . . . . . . . . .
General Description 7C–2. . . . . . . . . . . . . . . . . . . . .
Diagnosis 7C–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch Assembly 7C–9. . . . . . . . . . . . . . . . . . . . . . . .
Clutch Assembly and Associated Parts 7C–9. . .
Removal 7C–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 7C–10. . . . . . . . . . . . . . . . . .
Installation 7C–15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch Control 7C–17. . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch Control Parts 7C–17. . . . . . . . . . . . . . . . . . .
Removal 7C–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 7C–18. . . . . . . . . . . . . . . . . .
Installation 7C–19. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment 7C–19. . . . . . . . . . . . . . . . . . . . . . . . . . .
Master Cylinder 7C–22. . . . . . . . . . . . . . . . . . . . . . . . .
Disassembled View 7C–22. . . . . . . . . . . . . . . . . . . .
Disassembly 7C–23. . . . . . . . . . . . . . . . . . . . . . . . . . Inspection and Repair 7C–23. . . . . . . . . . . . . . . . . .
Reassembly 7C–23. . . . . . . . . . . . . . . . . . . . . . . . . .
Slave Cylinder 7C–24. . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembled View 7C–24. . . . . . . . . . . . . . . . . . . .
Disassembly 7C–24. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 7C–24. . . . . . . . . . . . . . . . . .
Reassembly 7C–25. . . . . . . . . . . . . . . . . . . . . . . . . .
Damper Cylinder 7C–26. . . . . . . . . . . . . . . . . . . . . . . .
Disassembled View 7C–26. . . . . . . . . . . . . . . . . . . .
Disassembly 7C–26. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 7C–26. . . . . . . . . . . . . . . . . .
Reassembly 7C–26. . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 7C–27. . . . . . . . . . . . .
General Specifications 7C–27. . . . . . . . . . . . . . . . .
Torque Specifications 7C–27. . . . . . . . . . . . . . . . . .
Special Tools 7C–30. . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFOMING SERVICE ON
OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS. CAUTION: Always use the correct fastner in the
proper location. When you reolace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that requir a
replacement after removal. ISUZU will also call out
the fasteners that requir thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED , do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fastners or fastner
joint interfaces. Generally,such coatings adversely
affect the fastner torque and the joint clamping force,
and may damage the fastner. When you install
fasteners, use the correct tightening sequence and
specifications. Following these instructions can
help you avoid damage to parts and systems.

CLUTCH7C–3
Master Cylinder
(6VE1 LHD)
A07RW007
(6VE1 RHD)
A07RW066

7C–4CLUTCH
(4JX1)
A07RW067
Damper Cylinder
(Except 6VE1 LHD)
A07RS004
In order to reduce the occurrence of noises at the clutch
hydraulic system, the damper cylinder is used in theclutch hydraulic line between the master cylinder and
slave cylinder.

CLUTCH7C–5
Slave Cylinder
A07RS005
Pressure Plate Assembly
A07RS006

7C–6CLUTCH
Driven Plate Assembly
(6VE1)
A07RS007

CLUTCH7C–7
(4JX1)
A07RW045

7C–8CLUTCH
Diagnosis
ConditionPossible causeCorrection
DraggingFluid leakage.Repair
Air in hydraulic line.Bleed
Master cylinder and slave cylinder
seals worn. Replace master cylinder.
Replace slave cylinder seals.
Driven plate warped.Replace driven plate.
Diaphragm spring weakened or tip of
fingers worn. Replace pressure plate
Driven plate sticking on splines.Lubricate with grease or replace.
Clutch spline worn. Repair
Release bearing worn or damaged.Replace release bearing.
SlippingDriven plate facing worn or
oil–soaked.Replace driven plate and check for
leaks.
Diaphragm spring weakened.Replace pressure plate.
Pressure plate or flywheel warped.Correct or replace.
Master cylinder and slave cylinder
seals worn.Replace master cylinder.
Replace slave cylinder seals.
ChatteringEngine mounts loose or damaged.Tighten or replace.
Driven plate facing warped.Replace driven plate.
Surface of facing hardened.Replace driven plate
Driven plate facing oil soaked. Replace driven plate and check for
leaks.
Damper springs weakened or
broken. Replace.
Pressure plate or flywheel warped.Correct or replace.
NoisyReplace bearing binding.Correct, or replace if damaged, and
lubricate.
Replace bearing worn or damaged. Replace release bearing.
Release bearing poorly lubricated. Lubricate.
Pilot bearing worn.Replace pilot bearing.
Damper springs weakened or
broken.Replace driven plate.
Rivets of driven plate exposed.Replace driven plate.
Replace driven plate.Hydraulic line blocked.Clean out or replace.
Master or slave cylinders binding.Repair or replace as needed.

CLUTCH7C–9
Clutch Assembly
Clutch Assembly and Associated Parts
201RW029
Legend
(1) Flywheel Assembly and Crankshaft Bearing
(2) Driven Plate Assembly (6VE1)
(3) Driven Plate Assembly (4JX1)
(4) Pressure Plate Assembly (5) Transmission Assembly
(6) Front Cover
(7) Shift Fork
(8) Release Bearing
Removal
1. Remove transmission assembly, refer to ”MANUAL
TRANSMISSION” of Section 7B for ”Removal AND
INSTALLATION” procedure.
2. Mark the flywheel, clutch cover and pressure plate lug
for alignment when installing.
3. Remove pressure plate assembly (3).
4. Remove driven plate assembly (1) or (2). Use the pilot
aligner 5-85253-001-0 (J-24547) to prevent the
driven plate assembly from falling free.
201RW031

7C–10CLUTCH
5. Mark the flywheel, clutch cover and pressure plate lug
for alignment when installing.
6. Remove the release bearing (3) from the
transmission case .
7. Remove the shift fork snap pin.
8. Remove the shift fork pin and shift fork (4) from the
front cover.
9. Remove the front cover bolts.
10. Remove the front cover (5) from the transmission
case.
220RW088
11. Remove flywheel assembly and crankshaft bearing.
Do not remove except for replacement.
12. Use the remover 5–8840–2000–0 (J–5822) and
sliding hammer 5–8840–0019–0 (J–23907) to
remove the crankshaft bearing
015RW053
Inspection and Repair
Make necessary correction or parts replacement if wear,
damage, or any other abnormal condition are found
through inspection.
Pressure Plate Assembly
201RS002
1. Visually check the pressure plate friction surface for
excessive wear and heat cracks.
2. If excessive wear or deep heat cracks are present,
the pressure plate must be replaced.
Pressure Plate Warpage
201RS003

CLUTCH7C–11
1. Use a straight edge and a feeler gauge to measure
the pressure plate friction surface flatness in four
directions.
2. If any of the measured values exceeds the specified
limit, the pressure plate must be replaced.
Pressure Plate Warpage
Limit: 0.3 mm (0.012 in)
Clutch Cover
201RS004
1. Visually check the entire clutch cover for excessive
wear, cracking, and other damage.
2. The clutch cover must be replaced if any of these
conditions are present.
Clutch Set Force
201RS005
1. Invert the pressure plate assembly.2. Place a new driven plate over the pressure plate. A
metal sheet with “A” thickness of 8.3 mm (0.327 in)
may be used in place of the driven plate.
3. Compress the pressure plate assembly until the
distance “B” becomes 12 mm (0.472 in).
4. Note the pressure gauge reading.
5. If the measured value is less than the specified limit,
the pressure plate assembly must be replaced.
Clutch Set Force
Standard: 7208 N ( 1621 lb)
Limit: 6468 N (1454 lb)
Diaphragm Spring Finger Height
201RW009
Legend
(1) Release Side
1. Place a new driven plate or a 8.3 mm (0.327 in)
spacer beneath the pressure plate.
2. Fully compress the pressure plate and diaphragm
spring.
3. There are two ways to do this.
4. Use a bench press to press down on the assembly
from the top.
5. Tighten the fixing bolts.
NOTE: Preload on diaphragm spring finger must be 49 –
98 N (11 – 22 lb) in direction of release, when clutch cover
assembly is bolted to the flywheel.
6. Measure the spring height from base to spring tip “A”.
If the measured value exceeds the specified limit, the
pressure plate assembly must be replaced.
Diaphragm Spring Finger Height
Standard: 49.9 mm – 51.9 mm (1.965 in –
2.043 in)