Page 1929 of 2389
DESCRIPTION
wTransaxle types S51 are constant mesh synchronizers for forward gears, and a sliding mesh
reverse gear.
wThe input shaft is composed of the 1st and 2nd speed gears and the reverse drive gear, and
the output shaft is composed of the drive gear (for use with the ring gear).
wThe oil used in transaxle is as follows:
S51 ................................ ATF type DEXRON) ll
wThe illustrations below show the engagements± of transaxle gears.
± MANUAL TRANSAXLEDescriptionMT±2
Page 1930 of 2389

PRECAUTIONS
When working with FIPG material, you must be observe the following.
wUsing a razor blade and gasket scraper, remove all the old packing (FIPG) material from the
gasket surfaces.
wThoroughly clean all components to remove all the loose material.
wClean both seating surfaces with a non±residue solvent.
wApply the seal packing in approx.1 mm (0.04 in.) bead along the sealing surface.
wParts must be assembled within 10 minutes of application. Otherwise, the packing (FIPG)
material must be removed and reapplied.
Disassemble and inspect transmission or
differential
Replace oil
Add oil .
Oil level too high
Oil seal, 4±ring or gasket worn or
damaged
Replace control cable
Disassemble and inspect transmissionDrain oil
Replace oil seal, O±ring or gasket
TROUBLESHOOTING
Control cable faulty
Transmission faulty
Disassemble and inspect transmission Transmission or differential faulty
Hard to shift or will not
shiftWrong oil grade
Oil level low
Transmission faulty Jumps out of gearPossible cause
Oil leakageMT±7,42 Problem
Remedy
Noise
MT±7MT±7MT±7Page
± MANUAL TRANSAXLEPrecautionsMT±3
Page 1931 of 2389

PRECAUTIONS
When working with FIPG material, you must be observe the following.
wUsing a razor blade and gasket scraper, remove all the old packing (FIPG) material from the
gasket surfaces.
wThoroughly clean all components to remove all the loose material.
wClean both seating surfaces with a non±residue solvent.
wApply the seal packing in approx.1 mm (0.04 in.) bead along the sealing surface.
wParts must be assembled within 10 minutes of application. Otherwise, the packing (FIPG)
material must be removed and reapplied.
Disassemble and inspect transmission or
differential
Replace oil
Add oil .
Oil level too high
Oil seal, 4±ring or gasket worn or
damaged
Replace control cable
Disassemble and inspect transmissionDrain oil
Replace oil seal, O±ring or gasket
TROUBLESHOOTING
Control cable faulty
Transmission faulty
Disassemble and inspect transmission Transmission or differential faulty
Hard to shift or will not
shiftWrong oil grade
Oil level low
Transmission faulty Jumps out of gearPossible cause
Oil leakageMT±7,42 Problem
Remedy
Noise
MT±7MT±7MT±7Page
± MANUAL TRANSAXLETroubleshootingMT±3
Page 1932 of 2389
7. REMOVE TRANSAXLE MOUNTING BOLTS OF
TRANSAXLE UPPER
8. RAISE VEHICLE
NOTICE: Be sure the vehicle is securely supported.
9. REMOVE UNDER COVERS
10. DRAIN OUT FLUID
11. DISCONNECT SPEEDOMETER CABLE
S51 TRANSMISSION
REMOVAL OF TRANSAXLE
1. REMOVE NEGATIVE BATTERY CABLE
2. REMOVE CLUTCH RELEASE CYLINDER AND TUBE
CLAMP
5. REMOVE STARTER
(a) Disconnect the cable and connector.
(b) Remove the starter with the two bolts.
6. DISCONNECT BACK±UP LIGHT SWITCH
CONNECTOR AND GROUND STRAP 3. REMOVE±.CLUTCH TUBE BRACKET
(a) Remove the retainer from the bracket.
(b) Remove the bolt and bracket.
4. DISCONNECT CONTROL CABLES
(a) Remove the clips and washers.
(b) Remove the retainer from the cables.
± MANUAL TRANSAXLES51 TransmissionMT±4
Page 1933 of 2389
16. DISCONNECT LEFT STEERING KNUCKLE FROM
LOWER ARM
(a) Disconnect the steering knuckle from the tower arm.
(b) Pull the steering knuckle toward the outside and remove
the drive shaft.
17. REMOVE STABILIZER BAR
(See page FA±34) 15. REMOVE CENTER DRIVE SHAFT
(a) Using pliers, remove the snap ring from the bearing
bracket.
(b) Remove the bolt on the bearing bracket.
(c) Pull out the center drive shaft. 13. REMOVE ENGINE MOUNTING CENTER MEMBER
(a) Remove the front and rear engine mounting bolts.
(b) Remove the engine mounting center member.
14. DISCONNECT BOTH DRIVE SHAFTS
Loosen the six nuts while depressing the brake pedal. 12. REMOVE SUSPENSION LOWER CROSSMEMBER
± MANUAL TRANSAXLES51 Transmission.MT±5
Page 1934 of 2389
18. DISCONNECT LEFT ENGINE MOUNTING
(a) Raise the transaxle and engine slightly with a jack
and wooden block in between.
(b) Disconnect the left engine mounting.
19. REMOVE TRANSAXLE
(a) Remove the transaxle mounting bolts from the engine.
(b) Lower the engine left side and remove the transaxle
from the engine.
± MANUAL TRANSAXLES51 TransmissionMT±6
Page 1935 of 2389
COMPONENTS
± MANUAL TRANSAXLES51 TransmissionMT±7
Page 1936 of 2389
COMPONENTS (Cont'd)
± MANUAL TRANSAXLES51 TransmissionMT±8