Nissan Terrano r20e. Instruction — part 38
Control Valve Lower Body
Apply ATF to all components before their installation.
Numbers preceding valve springs correspond with those shown in SDS on page AT-197.
SAT112GA
REPAIR FOR COMPONENT PARTS
AT-149
DISASSEMBLY
1. Remove valves at parallel pins.
2. Remove valves at retainer plates.
For removal procedures, refer to “DISASSEMBLY” of Control
Valve Upper Body.
INSPECTION
Valve springs
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Check each valve spring for damage or deformation. Also mea-
sure free length and outer diameter.
Inspection standard:
Refer to SDS, AT-197.
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Replace valve springs if deformed or fatigued.
Control valves
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Check sliding surfaces of control valves, sleeves and plugs for
damage.
ASSEMBLY
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Install control valves.
For installation procedures, refer to “ASSEMBLY” of Control
Valve Upper Body, AT-146.
SAT838A
SAT829A
SAT838A
REPAIR FOR COMPONENT PARTS
Control Valve Lower Body (Cont’d)
AT-150
Reverse Clutch
DISASSEMBLY
1. Check operation of reverse clutch.
a. Install seal ring onto oil pump cover and install reverse clutch.
Apply compressed air to oil hole.
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not contact snap ring,
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D-ring might be damaged.
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Oil seal might be damaged.
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Fluid might be leaking past piston check ball.
2. Remove drive plates, driven plates, retaining plate, dish plate
and snap ring.
NAT296
SAT841A
SAT842A
REPAIR FOR COMPONENT PARTS
AT-151
3. Remove snap ring from clutch drum while compressing clutch
springs.
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Do not expand snap ring excessively.
4. Remove spring retainer and return spring.
5. Install seal ring onto oil pump cover and install reverse clutch
drum. While holding piston, gradually apply compressed air to
oil hole until piston is removed.
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Do not apply compressed air abruptly.
6. Remove D-ring and oil seal from piston.
INSPECTION
Reverse clutch snap ring and spring retainer
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Check for deformation, fatigue or damage.
Reverse clutch return springs
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Check for deformation or damage. Also measure free length
and outside diameter.
Inspection standard:
Refer to SDS, AT-197.
Reverse clutch drive plates
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Check facing for burns, cracks or damage.
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Measure thickness of facing.
Thickness of drive plate:
Standard value: 1.90 - 2.05 mm (0.0748 - 0.0807 in)
Wear limit: 1.80 mm (0.0709 in)
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If not within wear limit, replace.
Reverse clutch dish plate
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Check for deformation or damage.
NAT297
SAT844A
SAT829A
SAT845A
REPAIR FOR COMPONENT PARTS
Reverse Clutch (Cont’d)
AT-152
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