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High Clutch
COMPONENTS=NJAT0145
SAT034K
SAT176D
DISASSEMBLYNJAT01461. Check operation of high clutch.
a. Apply compressed air to oil hole of input shaft.
+Stop up a hole on opposite side of input shaft.
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not contact snap ring:
+D-ring might be damaged.
+Oil seal might be damaged.
+Fluid might be leaking past piston check ball.
SAT177D
2. Remove seal rings from input shaft.
REPAIR FOR COMPONENT PARTS
High Clutch
AT-407
Page 410 of 2898
SAT178D
3. Remove snap ring.
4. Remove drive plates, driven plates and retaining plate.
SAT617H
5. Set Tool on spring retainer and remove snap ring from high
clutch drum while compressing return springs.
+Set Tool directly above springs.
+Do not expand snap ring excessively.
6. Remove spring retainer and return springs.
SAT302E
+Do not remove return spring from spring retainer.
SAT189D
7. Remove piston from high clutch drum by turning it.
SAT139E
8. Remove D-ring and oil seal from piston.
REPAIR FOR COMPONENT PARTS
High Clutch (Cont'd)
AT-408
Page 411 of 2898

INSPECTIONNJAT0147Reverse Clutch Snap Ring, Spring Retainer and Return
Springs
NJAT0147S01+Check for deformation, fatigue or damage.
+Replace if necessary.
+When replacing spring retainer and return springs,
replace them as a set.
SAT162D
High Clutch Drive PlatesNJAT0147S02+Check facing for burns, cracks or damage.
+Measure thickness of facing.
Thickness of drive plate:
Standard value: Refer to SDS, AT-475.
Wear limit: Refer to SDS, AT-475.
+If not within wear limit, replace.
SAT186D
High Clutch PistonNJAT0147S03+Make sure check balls are not fixed.
+Apply compressed air to check ball oil hole opposite the return
spring. Make sure there is no air leakage.
+Apply compressed air to oil hole on return spring side to make
sure air leaks past ball.
SAT187D
Seal Ring ClearanceNJAT0147S04+Install new seal rings onto input shaft.
+Measure clearance between seal ring and ring groove.
Standard clearance:
0.08 - 0.23 mm (0.0031 - 0.0091 in)
Allowable limit:
0.23 mm (0.0091 in)
+If not within wear limit, replace input shaft assembly.
SAT182DA
ASSEMBLYNJAT01481. Install D-ring and oil seal on piston.
+Take care with the direction of the oil seal.
+Apply ATF to both parts.
REPAIR FOR COMPONENT PARTS
High Clutch (Cont'd)
AT-409
Page 412 of 2898
SAT189D
2. Install piston assembly by turning it slowly.
+Apply ATF to inner surface of drum.
SAT191D
3. Install return springs and spring retainer on piston.
For return spring, refer to AT-477.
SAT617H
4. Set Tool on spring retainer and install snap ring while com-
pressing return springs.
+Set Tool directly above return springs.
SAT193D
+Do not align snap ring gap with spring retainer stopper.
SAT195D
5. Install drive plates, driven plates and retaining plate.
Take care with the order and direction of plates.
6. Install snap ring.
REPAIR FOR COMPONENT PARTS
High Clutch (Cont'd)
AT-410
Page 413 of 2898
SAT199D
7. Measure clearance between retaining plate and snap ring. If
not within allowable limit, select proper retaining plate.
Specified clearance:
Standard: 1.4 - 1.8 mm (0.055 - 0.071 in)
Allowable limit: 2.4 mm (0.094 in)
Retaining plate:
Refer to SDS, AT-475.
SAT196D
8. Check operation of high clutch.
Refer to ªHigh Clutchº, AT-407.
SAT197D
9. Install seal rings to input shaft.
+Apply petroleum jelly to seal rings.
SAT198D
+Roll paper around seal rings to prevent seal rings from
spreading.
REPAIR FOR COMPONENT PARTS
High Clutch (Cont'd)
AT-411
Page 414 of 2898
Forward Clutch and Overrun Clutch
COMPONENTSNJAT0149
SAT932JA
SAT201D
DISASSEMBLYNJAT01501. Check operation of forward clutch and overrun clutch.
a. Install bearing retainer on forward clutch drum.
b. Apply compressed air to oil hole of forward clutch drum.
c. Check to see that retaining plate moves to snap ring.
SAT202D
d. If retaining plate does not contact snap ring:
+D-ring might be damaged.
+Oil seal might be damaged.
+Fluid might be leaking past piston check ball.
REPAIR FOR COMPONENT PARTS
Forward Clutch and Overrun Clutch
AT-412
Page 415 of 2898
SAT203D
2. Remove snap ring for forward clutch.
3. Remove drive plates, driven plates, retaining plate and dish
plate for forward clutch.
SAT204D
4. Remove snap ring for overrun clutch.
5. Remove drive plates, driven plates, retaining plate and dish
plate for overrun clutch.
SAT205D
6. Set Tool on spring retainer and remove snap ring from forward
clutch drum while compressing return springs.
+Set Tool directly above return springs.
+Do not expand snap ring excessively.
7. Remove spring retainer and return springs.
SAT216D
8. Remove forward clutch piston with overrun clutch piston from
forward clutch drum by turning it.
SAT215D
9. Remove overrun clutch piston from forward clutch piston by
turning it.
REPAIR FOR COMPONENT PARTS
Forward Clutch and Overrun Clutch (Cont'd)
AT-413
Page 416 of 2898
SAT140E
10. Remove D-rings and oil seals from forward clutch piston and
overrun clutch piston.
INSPECTIONNJAT0151Snap Rings and Spring RetainerNJAT0151S01+Check for deformation, fatigue or damage.
SAT138D
Forward Clutch and Overrun Clutch Return SpringsNJAT0151S02+Check for deformation or damage.
+Measure free length and outer diameter.
Inspection standard:
Refer to SDS, AT-477.
+Replace if deformed or fatigued.
SAT162D
Forward Clutch and Overrun Clutch Drive PlatesNJAT0151S03+Check facing for burns, cracks or damage.
+Measure thickness of facing.
Thickness of drive plate:
Forward clutch
Standard value: 1.8 mm (0.071 in)
Wear limit: 1.6 mm (0.063 in)
Overrun clutch
Standard value: 1.6 mm (0.063 in)
Wear limit: 1.4 mm (0.055 in)
+If not within wear limit, replace.
REPAIR FOR COMPONENT PARTS
Forward Clutch and Overrun Clutch (Cont'd)
AT-414