YH4
GRAND
VITARA
7A1-2 MANUAL TRANSMISSION (TYPE 2)
DIAGNOSIS
ConditionPossible CauseCorrection
Gear slipping out of meshWorn shift fork shaft
Worn shift fork or synchronizer sleeve
Weak or damaged locating spring
Worn bearings on input shaft or main shaft
Worn chamfered tooth on sleeve or gear
Missing or disengagement of circlip(s)Replace
Replace
Replace
Replace
Replace sleeve and gear
Install
Gears refusing to disengageWeakened or broken synchronizer spring
Distorted shift shaft or shift forkReplace
Replace
Hard shiftingImproper clutch pedal free travel
Distorted or broken clutch disc
Damaged clutch pressure plate
Worn synchronizer ring
Worn chamfered tooth on sleeve or gear
Distorted shift shaftAdjust
Replace
Replace clutch cover
Replace
Replace sleeve and gear
Replace
NoiseInadequate or insufficient lubricant
Damaged or worn bearing(s)
Damaged or worn gear(s)
Damaged or worn synchronizer ring
Damaged or worn chamfered tooth on
sleeve or gearReplenish
Replace
Replace
Replace
Replace
YH4
GRAND
VITARA
1. Manual selector assembly
(Select lever assembly)
2. Manual lever assembly
3. Select cable bracket
4. Select indicator
5. Slide cover
6. Select lever knob7. Spring
8. Knob button
9. Shift lock solenoid rod
10. Shift lock solenoid
11. Cover
12. Illumination lamp
13. Interlock cam
1. Interlock cam pin
(only for new selector assembly) Tightening Torque
(a): 18 N
.m (1.8 kg-m, 13.5 lb-ft)1. Manual lever
assembly
2. Select indicator
assembly
3. Illumination lamp
assembly
4. Bulb filter
5. Bulb
6. Knob assembly
7. Shift lock solenoid
Type-1 Type-2
Type-1
7B1-62 AUTOMATIC TRANSMISSION (4 A / T)
MANUAL SELECTOR ASSEMBLY
REMOVAL
1) Disconnect negative cable at battery.
2) Remove console box.
3) Disconnect connector for illumination lamp, shift lock solenoid
and overdrive OFF switch.
4) Disconnect interlock cable from interlock cam of selector as-
sembly.
5) Remove selector assembly mounting bolts.
6) Disconnect select cable from lever of selector assembly.
INSTALLATION
NOTE:
New selector assembly of Type-1 is supplied with held inter-
lock cam at interlock cable connecting position with pin. Re-
move this pin after connecting interlock cable to interlock cam
and tightening cable nut.
Reverse removal procedure to install noting the followings.
Connect interlock cable end to cam referring to steps 2) to 8) of
ªInterlock Cable Installationº section.
Upon completion of installation, confirm that brake (key) interlock
system operates properly.
YH4
GRAND
VITARA
7B1-68 AUTOMATIC TRANSMISSION (4 A / T)
1. Select lever
2. Shift lock solenoid
3. Brake light switch
4. Brake pedal
5. Cable
6. Ignition switch
1. Select lever
2. Interlock cam3. Shift lock solenoid rod
4. Shift lock solenoid
Type-1
BRAKE INTERLOCK SYSTEM
SHIFT LOCK SOLENOID CONTROL
This system consists of shift lock solenoid control system and inter-
lock cable control system.
The shift lock solenoid control system is so designed that the selec-
tor lever can not be shifted from ªPº range position unless the igni-
tion switch is turned ON and the brake pedal is depressed. And the
interlock cable control system is so designed that the selector lever
cannot be shifted from ªPº range position unless the ignition switch
is turned to ªACCº or ªONº position. Also, the ignition key cannot be
pulled out of the key slot unless the selector lever is in ªPº range.
SHIFT LOCK SOLENOID CONTROL OPERATIONS
When the select lever is in ªPº range, the ignition key position is
ªONº and depressing the brake pedal cause the electric current to
flow to the solenoid. As the shift lock solenoid rod (or the lock plate)
is drawn toward the solenoid in this state, it frees the interlock cam
(or the detent pin), which then allows the select lever to be shifted
from ªPº range to any other position.
Even when the select lever is in ªPº range, if the ignition key position
is ªLOCKº or ªACCº or the brake pedal is not depressed, the electric
current does not flow to the solenoid.
In this state, the shift lock solenoid rod (or the lock plate) is pushed
away from the solenoid by spring force and it obstructs the interlock
cam (or the detent pin) movement. Thus the select lever button
does not work even when pressed and the select lever shift is pre-
vented.
YH4
GRAND
VITARA
1. Ignition switch assembly
2. Clamp screw
3. Outer end
1. Interlock cable
2. Steering column
3. Steering column
holder
Type-1
1. Interlock cam
2. Lever plate
3. Interlock cable
4. Pin with 4 mm (0.15 in.) dia.
7B1-72 AUTOMATIC TRANSMISSION (4 A / T)
Installation
1) Shift select lever to ªNº range and turn ignition key to ªACCº
position.
2) Connect inner end of interlock cable to key interlock lever (Igni-
tion switch side).
3) Install outer end bracket of interlock cable to ignition switch as-
sembly, and tighten screw to specified torque.
Tightening Torque
(a): 2.2 N
.m (0.22 kg-m, 1.5 lb-ft)
4) Pass and connect interlock cable as shown at the left figure.
TYPE-1
5) Fix interlock cam by inserting pin with about 4 mm (0.15 in.) dia.
into holes of cam and lever plate.
6) Install cable end to interlock cam and stud bolt and after making
sure that cable outer is pushed in arrow direction B by leaf
spring, tighten mounting nut to specified torque. Remove pin.
Tightening Torque
(a): 13 N
.m (1.3 kg-m, 9.5 lb-ft)
7) Turn ignition key to ªACCº position and shift select lever to ªNº
range, and check for the followings.
a. When select lever is shifted at ªPº range with knob button
depressed, ignition key can not be turned from ªACCº to
ªLOCKº position.
b. When knob button is released, ignition key can be turned to
ªLOCKº position.
c. When ignition key is at ªLOCKº position, select lever can not
be shifted from ªPº to any other range.
8) Install console box.
9) Install steering column cover.
10) Adjust steering column or tighten steering column bolts.
11) Install steering column hole cover.
12) If equipped with air bag system, enable air bag system.
Refer to ªEnabling Air bag Systemº in Section 10B.
YH4
GRAND
VITARA
1. Inner end of interlock cable
2. Key release cam
1. Key release cam
2. Cable outer(a)
Type-2
Type-2
AUTOMATIC TRANSMISSION (4 A / T) 7B1-73
TYPE-2
5) With key release cam set as shown at the left figure, connect
inner end of interlock cable to key release cam. (Select lever
side.)
6) Move key release cam so that it is set at such angle as shown
at the left figure and with special tool inserted in hole A , fix key
release cam.
Special Tool
(A): 09925-78210 (6 mm)
7) With key release cam fixed with special tool, install cable outer
to bracket and after making sure that cable outer is pushed in
arrow direction B by leaf spring, tighten mounting nut to speci-
fied torque. Remove special tool.
Tightening Torque
(a): 13 N
.m (1.3 kg-m, 9.5 lb-ft)
8) Turn ignition key to ªACCº position and shift select lever to ªNº
range, and check for the followings.
a. When select lever is shifted at ªPº range with knob button
depressed, ignition key can not be turned from ªACCº to
ªLOCKº position.
b. When knob button is released, ignition key can be turned to
ªLOCKº position.
c. When ignition key is at ªLOCKº position, select lever can not
be shifted from ªPº to any other range.
9) Install console box.
10) Install steering column cover.
11) Adjust steering column or tighten steering column bolts.
12) Install steering column hole cover.
13) If equipped with air bag system, enable air bag system.
Refer to ªEnabling Air bag Systemº in Section 10B.
YH4
GRAND
VITARA
1. Crankshaft
2. Flywheel
3. Clutch disc
4. Pressure plate
5. Clutch cover
6. Diaphragm spring
7. Release bearing
8. Input shaft bearing
9. Input shaft
10. Operating cylinder
11. Clutch housing
12. Release fork
7C1-2 CLUTCH
The clutch is a diaphragm-spring clutch of a dry single
disc type. The diaphragm spring is of a tapering-finger
type, which is a solid ring in the outer diameter part,
with a series of tapered fingers pointing inward.
The disc, carrying torsional coil springs, is positioned
on the transmission input shaft with an involute spline
fit.
The clutch cover is secured to the flywheel, and car-
ries the diaphragm spring in such a way that the pe-
ripheral edge part of the spring pushes on the pres-
sure plate against the flywheel (with the disc in be-
tween), when the clutch release bearing is held back.
This is the engaged condition of the clutch.Depressing the clutch pedal causes the release bear-
ing to advance and pushes on the tips of the tapered
fingers of the diaphragm spring. When this happens,
the diaphragm spring pulls the pressure plate away
from the flywheel, thereby interrupting the flow of
drive from flywheel through clutch disc to transmis-
sion input shaft.
GENERAL DESCRIPTION
YH4
GRAND
VITARA
CLUTCH 7C1-3
DIAGNOSIS
ConditionPossible CauseCorrection
SlippingImproper clutch pedal free travel.
Worn or oily clutch disc facing.
Warped disc, pressure plate or flywheel
surface.
Weakened diaphragm spring.
Master cylinder piston or seal cup not returning.Bleed air or replace master
cylinder.
Replace disc.
Replace disc, clutch cover or
flywheel.
Replace clutch cover.
Repair master cylinder.
Dragging clutchImproper clutch pedal free travel.
Weakened diaphragm spring, or worn spring tip.
Rusted input shaft splines.
Damaged or worn splines of transmission
input shaft.
Excessively wobbly clutch disc.
Clutch facings broken or dirty with oil.
Fluid leakage.Bleed air or replace master
cylinder.
Replace clutch cover.
Lubricate.
Replace input shaft.
Replace disc.
Replace disc.
Repair or replace.
Clutch vibrationGlazed (glass-like) clutch facings.
Clutch facings dirty with oil.
Release bearing slides unsmoothly on input
shaft bearing retainer.
Wobbly clutch disc, or poor facing contact.
Weakened torsion springs in clutch disc.
Clutch disc rivets loose.
Distorted pressure plate or flywheel surface.
Weakened or loosened engine mounting
bolt or nut.Repair or replace disc.
Replace disc.
Lubricate or replace input
shaft bearing retainer.
Replace disc.
Replace disc.
Replace disc.
Replace clutch cover or flywheel.
Retighten or replace mounting.
Noisy clutchWorn or broken release bearing.
Input shaft front bearing worn down.
Excessive rattle of clutch disc hub.
Cracked clutch disc.
Pressure plate and diaphragm spring rattling.Replace release bearing.
Replace input shaft bearing.
Replace disc.
Replace disc.
Replace clutch cover.
Grabbing clutchClutch disc facings soaked with oil.
Clutch disc facings excessively worn.
Rivet heads showing out of facing.
Weakened torsion springs.Replace disc.
Replace disc.
Replace disc.
Replace disc.
YH4
GRAND
VITARA
CLUTCH 7C1-11
INSPECTION
Input Shaft Bearing and Release Bearing
Check bearing for smooth rotation and replace it if abnormality is
found.
Clutch Disc
Measure depth of rivet head depression, i.e. distance between rivet
head and facing surface. If depression is found to have reached
service limit at any of holes, replace disc assembly.
Rivet head depth
Standard: 1.6 mm (0.06 in.)
Service limit: 0.5 mm (0.02 in.)
Clutch Cover
1) Check diaphragm spring for abnormal wear or damage.
2) Inspect pressure plate for wear or heat spots.
3) If abnormality is found, replace it as assembly. Do not disas-
semble it into diaphragm and pressure plate.
Flywheel
Check surface contacting clutch disc for abnormal wear or heat
spots. Replace or repair as required.