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Check wire netting of oil strainer for damage. Replace if necessary.
Shift Solenoid Valves “A and B”, Line Pressure Solenoid Valve, Torque Conv erter Clutch Solenoid Valve and Overrun
Clutch Solenoid Valve
Measure resistance.
• For shift solenoid valve A, refer to AT-142, " Component Inspec-
tion " .
• For shift solenoid valve B, refer to AT-147, " Component Inspec-
tion " .
• For line pressure solenoid valve, refer to AT-138, " Component
Inspection " .
• For torque converter clutch solenoid valve, refer to AT-127, " Com-
ponent Inspection " .
• For overrun clutch solenoid valve, refer to AT-152, " Component
Inspection " .
A/T Fluid Temperature Sensor Measure resistance.
• For A/T fluid temperature sensor, refer to AT-161, " Component
Inspection " .
Line Pressure Relief Valve Springs and To rque Converter Pressure Holding Spring
• Check each spring for damage or deformation. Also measure free length and outer diameter. Refer to AT-374, " Control Valves " .
• Replace springs if deformed or fatigued.
ASSEMBLY SCIA3485E
SAT138D
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DISASSEMBLY
1. Remove valves at retainer plates. CAUTION:
Do not use a magnetic pick-up tool.
a. Use a suitable tool (A) to remove retainer plates (1).
b. Remove retainer plates (1) while holding spring, plugs (2) or sleeves using a suitable tool (A).
CAUTION:
Remove plugs (2) slowly to prevent internal parts from
jumping out. 19. 3-2 timing valve spring 20. 3-2 timing valve 21. Retainer plate
22. Plug 23. Overrun clutch reducing valve24. Overrun clutch reducing valve
spring
25. Retainer plate 26. Torque converter relief valve spring27. Torque converter relief valve
28. Retainer plate 29. Sleeve 30. Plug
31. Torque converter clutch control valve spring 32. Torque converter clutch
control valve 33. Retainer plate
34. Plug 35. 1-2 accumulator valve spring36. 1-2 accumulator valve
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AT-296< SERVICE INFORMATION >
REPAIR FOR COMPONENT PARTS
Install control valves.
For installation procedures, refer to AT-289, " Control Valve Upper
Body " .
Retainer Plate (Control Valve Lower Body)
Install proper retainer plates. Unit: mm (in)
Reverse Clutch INFOID:0000000004305520
COMPONENTS
DISASSEMBLY SCIA4978E
Lo-
cat- ion Retainer plate designation Width “A” Length “B” Type
L3 Pressure regulator valve 6.0
(0.236) 28.0
(1.102) I
L4 Overrun clutch control valve
L5 Accumulator control valve
L6 Shift valve A
L7 Shuttle valve
L12 Shift valve B 17.0
(0.669) 24.0
(0.945) II
L13 Pressure modifier valve 6.0
(0.236) 28.0
(1.102) I SAT089F
1. Reverse clutch drum 2. D-ring 3. Seal lip
4. Reverse clutch piston 5. Spring retainer assembly 6. Snap ring
7. Dish plate 8. Driven plate 9. Retaining plate
10. Snap ring 11. Drive plate SCIA6939J
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1. Check operation of reverse clutch
a. Install seal rings to drum support of oil pump assembly, and set reverse clutch assembly.
b. Apply compressed air into the oil hole at the location as shown.
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. Remove snap ring (1) using a suitable tool (A).
3. Remove retaining plate, drive plates, driven plates and dish plates.
4. Set Tool (A) on spring retainer assembly, and remove snap ring (1) from reverse clutch drum while compressing spring retainer
assembly.
CAUTION:
Set SST directly over return springs.
5. Remove spring retainer assemb ly from reverse clutch drum.
CAUTION:
Do not remove return springs from spring retainer.
6. Install seal rings to drum support of oil pump assembly (1), and set reverse clutch drum (2). Then apply compressed air into the
oil hole at the location as shown in the figure to remove reverse
clutch piston (3) from reverse clutch drum (2).
CAUTION:
Do not flow air in too quickly or reverse clutch piston (3)
and ATF could jump out. Carefull y flow air in little by little
while protecting with lint-free cloth.
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• Make sure that check balls are not fixed.
• Apply compressed air to check ball oil hole opposite from return spring. Make sure there is no air leakage.
• Apply compressed air to oil hole on return spring side to make sure
that air leaks past ball.
Reverse Clutch Drum Check for deformation or damage. Replace if necessary.
ASSEMBLY 1. Install D-ring (1) and seal lip (2) on reverse clutch piston (3). CAUTION:
Be careful with the di rection of seal lip (2).
2. Install reverse clutch piston by turning it slowly. CAUTION:
Apply ATF to inner surface of reverse clutch drum.
3. Install spring retainer assembly (1) to reverse clutch piston (2). SCIA6000J
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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 " .