F4A33.pdf

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1990-1994 A/T Overhaul Manual

AUTOMATIC

TRANSAXLE

F4A33, W4A32, W4A33

CONTENTS

ANNULUS GEAR AND TRANSFER

DRIVE GEAR SET ................................................ 100

CENTER DIFFERENTIAL - 4WD ........................ 115

DIFFERENTIAL .................................................... 102

END CLUTCH ........................................................ 94

EXTENSION HOUSING - 4WD ........................ 130

FRONT CLUTCH .................................................... 86

FRONT OUTPUT SHAFT - 4WD ........................ 118

GENERAL INFORMATION ................................ 2

KICKDOWN SERVO ............................................ 105

LOW-REVERSE BRAKE .................................... 106

OIL PUMP ............................................................ 84

OIL PUMP DRIVE GEAR

- F4A-33-1 -MNNS, MNPE ................................ 131

PLANETARY GEAR ............................................ 96

REAR CLUTCH .................................................... 90

SPECIAL TOOLS .................................................... 19

SPECIFICATIONS f............... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

.... ..... ..... ............ 9

Valve Body Spring Identification Chart ............ 10

SPEEDOMETER GEAR ........................................ 107

TRANSAXLE - 4WD ............................................ 52

TRANSAXLE - FWD ............................................ 23

TRANSFER - 4WD ................................................ 119

TRANSFER CASE - 4WD .................................... 127

TRANSFER CASE ADAPTER - 4WD ................ 124

TRANSFER SHAFT - FWD ................................ 113

VALVE BODY ........................................................ 108

Adjustment Pressure Plate,

Snap Rings and Spacers .................................... 11

Gear Ratio Table ................................................ 9

Sealants and Adhesives ..... .............................. 17

Service Specifications .................................... 10

Torque Specifications ........................................ 18

Transaxle Model Table ..........

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23c-2

F4A3, W4A3 - General Information

GENERAL INFORMATION

Precautions to be taken when disassembling and reassembling the transaxle

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Because the automatic transaxle is composed of component parts of an especially high degree of

precision, these parts should be very carefully handled during disassembly and assembly so as not to scar

or scratch them.

A rubber mat should be placed on the workbench, and it should always be kept clean.

During disassembly, cloth gloves or shop towels should not be-used. If such items must be used, either

use articles made of nylon, or use paper towels.

All disassembled parts must be thoroughly cleaned.

Metal parts may be cleaned with ordinary detergents, but must be thoroughly air dried.

Clean the clutch disc, resin thrust plate and rubber parts by using ATF (automatic transaxle fluid), being

very careful that dust, dirt, etc. do not adhere to them.

Do not reuse gaskets, oil seals, or rubber parts.

Replace such parts with new ones at every reassembly. The O-ring of the oil level gauge need not be

replaced.

Do not use grease other than petrolatum jelly.

Apply ATF to friction components, rotating parts, and sliding parts before installation.

A new clutch disc should be immersed in ATF for at least two hours before installation.

Do not apply sealer or adhesive to gaskets.

When a bushing must be replaced, replace the assembly in which it is incorporated.

If the transaxle main unit is damaged, also disassemble and clean the cooler system.

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F4A3, W4A3 - General Information

23C-3

;ECTIONAL VIEW - F4A33 with torque converter clutch

Torque

converter

Oil

Kickdown

brake

Planetary

gear

Transfer

idler gear

Low-reverse

brake

---. \ '\ '.

k

Front

clutch

Rear

Transfer

drive gear

End clutch

-/j Transfer shaft

Torque

clutch

converter

Differential

4-wheel steering 011 pump drive gear

(Vehicles with 4-wheel steering system)

TFA0547

) TSB Revision

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F4A3, W4A3 - General Information

iECTlONAL VIEW - F4A33 without torque converter clutch

Front

Cl\

Transfer

idler gear

Oil pump

W

Ilk

-reverse

e

Kickdown

bra ke

Planetary

gear

Rear

clutch

Torque

converter -,

Transfer

‘drive gear

End clutch

Differential

Transfer shaft

TFAOl 01

1 TSB Revision

zh

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F4A3, W4A3 - General Information

23C-5

iECTlONAL VIEW - W4A32 with torque converter clutch

Oil pump

Kickdown

brake

PJ

k3: al

v/reverse

drive gear

Torque converter

clutch

\

I

Planetary

gear

Front

clutch

\

I

\\\

Torque

converter -

Transfer

,idler gear

Rear output

shaft

Transfer

End

-clutch

1

Viscous

coupling

Center

differential

nt

put shaft

Differential

TFAOI 03

TSB Revision

<e

Transfer

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