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AT
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7. Measure clearance between retaining plate and snap ring using
feeler gauge. If not within allowable limit, select proper retaining
plate. Refer to “Parts Information” for retaining plate selection.
8. Check operation of reverse clutch.
High Clutch INFOID:0000000004305521
COMPONENTS
DISASSEMBLY 1. Check operation of high clutch.
a. Apply compressed air into the oil hole (A) of input shaft assem- bly (high clutch drum) at the location as shown.
CAUTION:
Block the oil hole (A) on the opposite side with lint-free
cloth (B).
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not contact snap ring: • High clutch piston seal might be damaged.Specified clearance
Standard and allowable limit: Refer to AT-375, " Clutches and Brakes " .
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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 lo cations 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-375, " Clutches and Brakes " .
Input Shaft " .
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• HR16DE engine models
(1): Snap ring
(2): Retaining plate
(3): Drive plate
(4): Driven plate
Drive plate/Driven plate: 3/5
CAUTION:
Be careful with the orde r and direction of plates.
• MR18DE engine models
(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 orde r and direction of plates.
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.
8. Install seal rings to input shaft assembly (high clutch drum). SCIA7703E
Clutches and Brakes " .
SCIA4890E
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REPAIR FOR COMPONENT PARTS
AT-309
< SERVICE INFORMATION >
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• Check facing for burns, cracks or
damage. Replace if necessary.
• Measure thickness of facing.
CAUTION:
• Measure the thickness at 3 lo cations 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.
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 Thickness of drive plate
Forward clutch Standard and allowable limit:
Refer to AT-375, " Clutches and Brakes " .
Overrun clutch Standard and allowable limit:
Refer to AT-375, " 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
Length (L) : 27.7 mm (1.091 in)
SCIA7025J
SAT213D