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REPAIR FOR COMPONENT PARTS
AT-285
< SERVICE INFORMATION >
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2. Remove seal rings from input shaft assembly (high clutch drum).
3. Remove snap ring using a flat-bladed screwdriver.
4. Remove retaining plate, drive plates and driven plates.
5. Set Tool A on cancel cover, and remove snap ring (1) from input
shaft assembly (high clutch drum) while compressing spring
retainer assembly.
CAUTION:
Do not expand snap ring (1) excessively.
6. Remove cancel cover (1) and spring retainer assembly (2) from
input shaft assembly (high clutch drum) (3).
CAUTION:
Do not remove return springs from spring retainers.
7. Apply compressed air into the oil hole (A) at the location as
shown in the figure to remove high clutch piston from input shaft
assembly (high clutch drum).
CAUTION:
• Do not blow air in too quickly, or high clutch piston and
ATF could jump out. Carefully blow air little by little while
protecting with lint-free cloth B.
• Block the oil hole on the opposite side with lint-free cloth
B.
SCIA4890E
SCIA4891E
Tool number: KV31103200 (J-39186)
SCIA6001J
SCIA7036E
SCIA7033E
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AT-286
< SERVICE INFORMATION >
REPAIR FOR COMPONENT PARTS
INSPECTION
High Clutch Snap Ring
Check for deformation, fatigue or damage. Replace if necessary.
High Clutch Drive Plates
• Check facing for burns, cracks or damage. Replace if necessary.
• Measure thickness of facing.
CAUTION:
• Measure the thickness at 3 locations and find the average.
• Inspect all drive plates.
• Replace if the thickness is below the allowable limit.
High Clutch Spring Retainer Assembly
Check length (L) of springs retainer assembly. Replace if damaged,
deformed or worn.
CAUTION:
Do not remove return springs (A) from spring retainers (B).
High Clutch Piston and Cancel Cover
Check for deformation or damage. Replace if necessary.
Input Shaft Assembly (High Clutch Drum)
Check for deformation or damage. Replace if necessary.
Seal Ring Clearance
• Install new seal rings onto input shaft assembly (high clutch drum).
• Measure clearance between seal ring and ring groove.
• If not within allowable limit, replace input shaft assembly (high
clutch drum).
ASSEMBLY
Thickness of drive plate
Standard and allowable limit:
Refer to AT-343, "
Clutches and Brakes".
SAT162D
Length (L): 20.6 mm (0.811 in)
SCIA7038E
Standard clearance and allowable limit:
Refer to AT-345, "
Input Shaft".
SCIA4901E
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REPAIR FOR COMPONENT PARTS
AT-287
< SERVICE INFORMATION >
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1. Install high clutch piston by turning it slowly.
CAUTION:
Apply ATF to inner surface of input shaft assembly (high
clutch drum) and high clutch piston.
2. Install spring retainer assembly (2) and cancel cover (1) on input
shaft assembly (high clutch drum) (3).
3. Set Tool A on cancel cover, and install snap ring (1) to input
shaft assembly (high clutch drum) while slowly compressing
spring retainer assembly.
CAUTION:
• Do not expand snap ring (1) excessively.
• Install spring retainer assembly without tilting.
• Do not align snap ring gap with cancel cover stopper.
4. Install driven plates, drive plates and retaining plate.
(1): Snap ring
(2): Retaining plate
(3): Drive plate
(4): Driven plate
(5): Driven plate
Drive plate/Driven plate: 4/7 (1+6)
CAUTION:
Be careful with the order and direction of plates.
S AT 111 F
SCIA7036E
Tool number: KV31103200 (J-39186)
SCIA6001J
SAT113F
SCIA7703E
Page 300 of 2771
AT-288
< SERVICE INFORMATION >
REPAIR FOR COMPONENT PARTS
5. Install snap ring using a flat-bladed screwdriver.
6. Set dial indicator A on retaining plate (1), and measure clear-
ance between retaining plate (1) and snap ring (2). If not within
allowable limit, select proper retaining plate (1). Refer to “Parts
Information” for retaining plate selection.
7. Check operation of high clutch. Refer to "DISASSEMBLY".
8. Install seal rings to input shaft assembly (high clutch drum).
CAUTION:
Roll paper around seal rings to prevent seal rings from spread-
ing.
Forward and Overrun ClutchesINFOID:0000000001703385
COMPONENTS
SCIA4891E
Specified clearance
Standard and allowable limit:
Refer to AT-343, "
Clutches and Brakes".
SCIA5858E
SCIA4890E
SAT198D
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REPAIR FOR COMPONENT PARTS
AT-289
< SERVICE INFORMATION >
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DISASSEMBLY
1. Check operation of forward clutch.
a. Install seal rings to bearing retainer, and set forward clutch drum.
b. Apply compressed air into oil hole of bearing retainer at the loca-
tion as shown in the figure.
c. Check to see that retaining plate moves to snap ring.
d. If retaining plate does not contact snap ring:
• D-ring might be damaged.
• Seal lip might be damaged.
• Fluid might be leaking past piston check ball.
2. Check operation of overrun clutch.
a. Install seal rings to bearing retainer, and set forward clutch drum.
1. Dish plate 2. Driven plate 3. Retaining plate
4. Snap ring 5. Dish plate 6. Driven plate
7. Retaining plate 8. Snap ring 9. Forward clutch
10. Drive plate 11. Drive plate 12. Overrun clutch
13. Snap ring 14. Spring retainer assembly 15. Overrun clutch piston
16. D-ring 17. Seal lip 18. Forward clutch piston
19. D-ring 20. Seal lip 21. Forward clutch drum
Refer to Refer to Service Manual for symbol mark in the figure.
SCIA8010E
SAT201D
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AT-290
< SERVICE INFORMATION >
REPAIR FOR COMPONENT PARTS
b. Apply compressed air into oil hole of bearing retainer at the loca-
tion as shown in the figure.
c. Check to see that retaining plate moves to snap ring.
d. If retaining plate does not contact snap ring:
• D-ring might be damaged.
• Seal lip might be damaged.
• Fluid might be leaking past piston check ball.
3. Remove snap ring for forward clutch from forward clutch drum
using a flat-bladed screwdriver.
4. Remove retaining plate, drive plates, driven plates and dish
plate for forward clutch.
5. Remove snap ring for overrun clutch from forward clutch drum
using a flat-bladed screwdriver.
6. Remove retaining plate, drive plates, driven plates and dish
plate for overrun clutch.
7. Set Tool A on spring retainer assembly, and remove snap ring
(1) from forward clutch drum while compressing spring retainer
assembly.
CAUTION:
• Set SST directly over return springs.
• Do not expand snap ring excessively.
8. Remove spring retainer assembly from forward clutch drum.
CAUTION:
Do not remove return springs from spring retainer.
9. Install seal rings to bearing retainer (1), and set forward clutch
drum. Then apply compressed air into the oil hole at the location
as shown in the figure to remove overrun clutch piston from for-
ward clutch piston.
CAUTION:
Do not blow air in too quickly, or overrun clutch piston and
ATF could jump out. Carefully blow air little by little while
protecting with lint-free cloth.
SAT202D
SCIA4894E
SCIA4895E
Tool number: KV31103200 (J-39186)
SCIA7989E
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REPAIR FOR COMPONENT PARTS
AT-291
< SERVICE INFORMATION >
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10. Install seal rings to bearing retainer (1), and set forward clutch
drum. Then apply compressed air into the oil hole at the location
as shown in the figure to remove forward clutch piston from for-
ward clutch drum.
CAUTION:
Do not blow air in too quickly, or forward clutch piston and
ATF could jump out. Carefully blow air little by little while
protecting with lint-free cloth.
11. Remove seal lips (1) and D-rings (2) from forward clutch piston
(3) and overrun clutch piston (4).
INSPECTION
Forward Clutch and Overrun Clutch Snap Rings
Check for deformation, fatigue or damage. Replace if necessary.
Forward Clutch and Overrun Clutch Drive Plates
• Check facing for burns, cracks or damage. Replace if necessary.
• Measure thickness of facing.
CAUTION:
• Measure the thickness at 3 locations and find the average.
• Inspect all drive plates.
• Replace if the thickness is below the allowable limit.
Forward Clutch and Overrun Clutch Dish Plates
• Check for deformation or damage.
• Measure thickness (t) of dish plate. Replace if damaged, deformed
or worn.
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Thickness of drive plate
Forward clutch
Standard and allowable limit:
Refer to AT-343, "
Clutches and Brakes".
Overrun clutch
Standard and allowable limit:
Refer to AT-343, "
Clutches and Brakes".SAT162D
Thickness of dish plate (t)
Forward clutch: 2.5 mm (0.098 in)
Overrun clutch: 2.15 mm (0.0846 in)
SCIA8008E
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AT-292
< SERVICE INFORMATION >
REPAIR FOR COMPONENT PARTS
Forward Clutch and Overrun Clutch Spring Retainer Assembly
Check length (L) of spring retainer assembly. Replace if damaged,
deformed or worn.
CAUTION:
Do not remove return springs (A) from spring retainer (B)
Forward Clutch Drum
• Make sure that check balls are not fixed.
• Apply compressed air to check ball oil hole from outside of forward
clutch drum. Make sure air leaks past ball.
• Apply compressed air to oil hole from inside of forward clutch
drum. Make sure there is no air leakage.
Overrun Clutch Piston
• Make sure that check balls are not fixed.
• Apply compressed air to check ball oil hole opposite return spring.
Make sure there is no air leakage.
• Apply compressed air to oil hole on return spring side. Make sure
that air leaks through ball hole.
ASSEMBLY
1. Install seal lips (1) and D-rings (2) on forward clutch piston (3)
and overrun clutch piston (4).
CAUTION:
Be careful with the direction of seal lips (1).Length (L): 27.7 mm (0.1091 in)
SCIA7025J
SAT213D
SAT212D
SCIA6005J