REPAIR FOR COMPONENT PARTS. Nissan Automatic Transmission

REPAIR FOR COMPONENT PARTS

Oil Pump

SAT648AB

DISASSEMBLY

1. Loosen bolts in numerical order and remove oil pump cover.

SAT649A

2. Remove rotor, vane rings and vanes.

I

Inscribe a mark on back of rotor for identification of foreaft direction when reassembling rotor. Then remove rotor.

SAT650A

3. While pushing on cam ring remove pivot pin.

I

Be careful not to scratch oil pump housing.

SAT651A

AT-134

REPAIR FOR COMPONENT PARTS

Oil Pump (Cont’d)

4. While holding cam ring and spring lift out cam ring spring.

I

Be careful not to damage oil pump housing.

I

Hold cam ring spring to prevent it from jumping.

SAT652A

5. Remove cam ring and cam ring spring from oil pump housing.

SAT653A

6. Remove pivot pin from control piston and remove control piston assembly.

SAT654A

7. Remove oil seal from oil pump housing.

I

Be careful not to scratch oil pump housing.

SAT655A

INSPECTION

Oil pump cover, rotor, vanes, control piston, side seals, cam ring and friction ring

I

Check for wear or damage.

SAT656A

AT-135

REPAIR FOR COMPONENT PARTS

SAT657A

Oil Pump (Cont’d)

Side clearances

I

Measure side clearances between end of oil pump housing and cam ring, rotor, vanes and control piston. Measure in at least four places along their circumferences. Maximum measured values should be within specified positions.

I

Before measurement, check that friction rings, O-ring, control piston side seals and cam ring spring are removed.

Standard clearance (Cam ring, rotor, vanes and control piston):

Refer to SDS, AT-199.

I

If not within standard clearance, replace oil pump assembly except oil pump cover assembly.

Seal ring clearance

I

Measure clearance between seal ring and ring groove.

Standard clearance:

0.10 - 0.25 mm (0.0039 - 0.0098 in)

Wear limit:

0.25 mm (0.0098 in)

I

If not within wear limit, replace oil pump cover assembly.

SAT658A

ASSEMBLY

1. Drive oil seal into oil pump housing.

I

Apply ATF to outer periphery and lip surface.

NAT295

2. Install cam ring in oil pump housing by the following steps.

a. Install side seal on control piston.

I

Pay attention to its direction — Black surface goes toward control piston.

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Apply petroleum jelly to side seal.

b. Install control piston on oil pump.

SAT654A c. Install O-ring and friction ring on cam ring.

I

Apply petroleum jelly to O-ring.

SAT660A

AT-136

REPAIR FOR COMPONENT PARTS

Oil Pump (Cont’d)

d. Assemble cam ring, cam ring spring and spring seat. Install spring by pushing it against pump housing.

SAT661A e. While pushing on cam ring install pivot pin.

SAT651A

3. Install rotor, vanes and vane rings.

I

Pay attention to direction of rotor.

SAT662A

4. Install oil pump housing and oil pump cover.

a. Wrap masking tape around splines of oil pump cover assembly to protect seal. Position oil pump cover assembly in oil pump housing assembly, then remove masking tape.

b. Tighten bolts in a criss-cross pattern.

SAT649A

5. Install new seal rings carefully after packing ring grooves with petroleum jelly. Press rings down into jelly to a close fit.

I

Seal rings come in two different diameters. Check fit carefully in each groove.

Small dia. seal ring:

No mark

Large dia. seal ring:

Yellow mark in area shown by arrow

I

Do not spread gap of seal ring excessively while installing.

It may deform ring.

YAT341

AT-137

REPAIR FOR COMPONENT PARTS

Control Valve Assembly

AT-138

NAT294

REPAIR FOR COMPONENT PARTS

Control Valve Assembly (Cont’d)

DISASSEMBLY

1. Remove solenoids.

a. Remove torque converter clutch solenoid valve and side plate from lower body.

b. Remove O-ring from solenoid.

SAT194B c. Remove line pressure solenoid valve from upper body.

d. Remove O-ring from solenoid.

SAT667A e. Remove 3-unit solenoid assembly from upper body.

f.

Remove O-rings from solenoids.

SAT043G

2. Disassemble upper and lower bodies.

a. Place upper body facedown, and remove bolts, reamer bolts and support plates.

b. Remove lower body, separator plate and separate gasket as a unit from upper body.

I

Be careful not to drop pilot filter, orifice check valve, spring and steel balls.

SAT195B c. Place lower body facedown, and remove separate gasket and separator plate.

d. Remove pilot filter, orifice check valve and orifice check spring.

SAT670A

AT-139

REPAIR FOR COMPONENT PARTS

Control Valve Assembly (Cont’d)

e. Check to see that steel balls are properly positioned in upper body. Then remove them from upper body.

SAT671A

INSPECTION

Lower and upper bodies

I

Check to see that there are pins and retainer plates in lower body.

SAT672A

I

Check to see that there are pins and retainer plates in upper body.

I

Be careful not to lose these parts.

SAT673A

I

Check to make sure that oil circuits are clean and free from damage.

I

Check tube brackets and tube connectors for damage.

SAT674A

Separator plates

I

Make sure that separator plate is free of damage and not deformed and oil holes are clean.

SAT675A

AT-140

REPAIR FOR COMPONENT PARTS

Control Valve Assembly (Cont’d)

Pilot filter

I

Check to make sure that filter is not clogged or damaged.

SAT676A

Torque converter clutch solenoid valve

I

Check that filter is not clogged or damaged.

I

Measure resistance. Refer to “Component Inspection”, AT-84.

Line pressure solenoid valve

I

Check that filter is not clogged or damaged.

I

Measure resistance. Refer to “Component Inspection”, AT-86.

SAT149G

3-unit solenoid assembly (Overrun clutch solenoid valve and shift solenoid valves A and B)

I

Measure resistance of each solenoid. Refer to “Component

Inspection”, AT-64, AT-67, AT-70.

SAT095B

A/T fluid temperature sensor

I

Measure resistance. Refer to “Component Inspection”, AT-78.

SAT169BA

ASSEMBLY

1. Install upper and lower bodies.

a. Place oil circuit of upper body face up. Install steel balls in their proper positions.

SAT671A

AT-141

REPAIR FOR COMPONENT PARTS

Control Valve Assembly (Cont’d)

b. Install reamer bolts from bottom of upper body and install separate gaskets.

SAT681A c. Place oil circuit of lower body face up. Install orifice check spring, orifice check valve and pilot filter.

SAT682A d. Install lower separate gaskets and separator plates on lower body.

e. Install and temporarily tighten support plates, fluid temperature sensor and tube brackets.

SAT197B f.

Temporarily assemble lower and upper bodies, using reamer bolt as a guide.

I

Be careful not to dislocate or drop steel balls, orifice check spring, orifice check valve and pilot filter.

SAT198B

AT-142

REPAIR FOR COMPONENT PARTS

Control Valve Assembly (Cont’d)

g. Install and temporarily tighten bolts and tube brackets in their proper locations.

Bolt length and location:

Bolt symbol

Bolt length mm (in)

70

(2.76)

50

(1.97)

33

(1.30)

27

(1.06)

SAT199BA

2. Install solenoids.

a. Attach O-ring and install torque converter clutch solenoid valve and side plates onto lower body.

SAT200B b. Attach O-rings and install 3-unit solenoids assembly onto upper body.

c. Attach O-ring and install line pressure solenoid valve onto upper body.

3. Tighten all bolts.

SAT150G

AT-143

REPAIR FOR COMPONENT PARTS

Control Valve Upper Body

Apply ATF to all components before their installation.

Numbers preceding valve springs correspond with those shown in SDS on page AT-197.

AT-144

SAT665I

REPAIR FOR COMPONENT PARTS

Control Valve Upper Body (Cont’d)

DISASSEMBLY

1. Remove valves at parallel pins.

I

Do not use a magnetic hand.

SAT834A a. Use a wire paper clip to push out parallel pins.

SAT822A b. Remove parallel pins while pressing their corresponding plugs and sleeves.

I

Remove plug slowly to prevent internal parts from jumping out.

SAT823A c. Place mating surface of valve facedown, and remove internal parts.

I

If a valve is hard to remove, place valve body facedown and lightly tap it with a soft hammer.

I

Be careful not to drop or damage valves and sleeves.

SAT824A

2. Remove valves at retainer plates.

a. Pry out retainer plate with wire paper clip.

SAT825A

AT-145

REPAIR FOR COMPONENT PARTS

Control Valve Upper Body (Cont’d)

b. Remove retainer plates while holding spring.

SAT826A c. Place mating surface of valve facedown, and remove internal parts.

I

If a valve is hard to remove, lightly tap valve body with a soft hammer.

I

Be careful not to drop or damage valves, sleeves, etc.

SAT827A

I

4-2 sequence valve and relay valve are located far back in upper body. If they are hard to remove, carefully push them out using stiff wire.

I

Be careful not to scratch sliding surface of valve with wire.

SAT828A

SAT829A

INSPECTION

Valve springs

I

Measure free length and outer diameter of each valve spring.

Also check for damage or deformation.

Inspection standard:

Refer to SDS, AT-197.

I

Replace valve springs if deformed or fatigued.

Control valves

I

Check sliding surfaces of valves, sleeves and plugs.

ASSEMBLY

1. Lubricate the control valve body and all valves with ATF. Install control valves by sliding them carefully into their bores.

I

Be careful not to scratch or damage valve body.

SAT830A

AT-146

REPAIR FOR COMPONENT PARTS

Control Valve Upper Body (Cont’d)

I

Wrap a small screwdriver with vinyl tape and use it to insert the valves into proper position.

SAT831A

Pressure regulator valve

I

If pressure regulator plug is not centered properly, sleeve cannot be inserted into bore in upper body.

If this happens, use vinyl tape wrapped screwdriver to center sleeve until it can be inserted.

I

Turn sleeve slightly while installing.

SAT832A

Accumulator control plug

I

Align protrusion of accumulator control sleeve with notch in plug.

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Align parallel pin groove in plug with parallel pin, and install accumulator control valve.

SAT833A

2. Install parallel pins and retainer plates.

SAT834A

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While pushing plug, install parallel pin.

SAT823A

AT-147

REPAIR FOR COMPONENT PARTS

Control Valve Upper Body (Cont’d)

4-2 sequence valve and relay valve

I

Push 4-2 sequence valve and relay valve with wire wrapped in vinyl tape to prevent scratching valve body. Install parallel pins.

SAT835A

I

Insert retainer plate while pushing spring.

SAT836A

AT-148

REPAIR FOR COMPONENT PARTS

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.

AT-149

SAT112GA

REPAIR FOR COMPONENT PARTS

Control Valve Lower Body (Cont’d)

DISASSEMBLY

1. Remove valves at parallel pins.

2. Remove valves at retainer plates.

For removal procedures, refer to “DISASSEMBLY” of Control

Valve Upper Body.

SAT838A

SAT829A

INSPECTION

Valve springs

I

Check each valve spring for damage or deformation. Also measure free length and outer diameter.

Inspection standard:

Refer to SDS, AT-197.

I

Replace valve springs if deformed or fatigued.

Control valves

I

Check sliding surfaces of control valves, sleeves and plugs for damage.

ASSEMBLY

I

Install control valves.

For installation procedures, refer to “ASSEMBLY” of Control

Valve Upper Body, AT-146.

SAT838A

AT-150

REPAIR FOR COMPONENT PARTS

Reverse Clutch

NAT296

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,

I

D-ring might be damaged.

I

Oil seal might be damaged.

I

Fluid might be leaking past piston check ball.

SAT841A

2. Remove drive plates, driven plates, retaining plate, dish plate and snap ring.

SAT842A

AT-151

REPAIR FOR COMPONENT PARTS

Reverse Clutch (Cont’d)

3. Remove snap ring from clutch drum while compressing clutch springs.

I

Do not expand snap ring excessively.

4. Remove spring retainer and return spring.

NAT297

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.

I

Do not apply compressed air abruptly.

6. Remove D-ring and oil seal from piston.

SAT844A

INSPECTION

Reverse clutch snap ring and spring retainer

I

Check for deformation, fatigue or damage.

Reverse clutch return springs

I

Check for deformation or damage. Also measure free length and outside diameter.

Inspection standard:

Refer to SDS, AT-197.

SAT829A

Reverse clutch drive plates

I

Check facing for burns, cracks or damage.

I

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)

I

If not within wear limit, replace.

Reverse clutch dish plate

I

Check for deformation or damage.

SAT845A

AT-152

REPAIR FOR COMPONENT PARTS

Reverse Clutch (Cont’d)

Reverse clutch piston

I

Shake piston to assure that balls are not seized.

I

Apply compressed air to check ball oil hole opposite the return spring. Make sure there is no air leakage.

I

Also apply compressed air to oil hole on return spring side to assure that air leaks past ball.

SAT846A

ASSEMBLY

1. Install D-ring and oil seal on piston.

I

Apply ATF to both parts.

SAT847A

2. Install piston assembly by turning it slowly and evenly.

I

Apply ATF to inner surface of drum.

SAT848A

3. Install return springs and spring retainer.

SAT849A

4. Install snap ring while compressing clutch springs.

NAT297

AT-153

REPAIR FOR COMPONENT PARTS

Reverse Clutch (Cont’d)

I

Do not align snap ring gap with spring retainer stopper.

SAT850A

5. Install drive plates, driven plates, retaining plate and dish plate.

6. Install snap ring.

SAT842A

7. Measure clearance between retaining plate and snap ring. If not within allowable limit, select proper retaining plate.

Specified clearance:

Standard

0.5 - 0.8 mm (0.020 - 0.031 in)

Allowable limit

1.2 mm (0.047 in)

Retaining plate:

Refer to SDS, AT-198.

SAT852A

8. Check operation of reverse clutch.

Refer to “DISASSEMBLY” of Reverse Clutch, AT-151.

SAT841A

AT-154

REPAIR FOR COMPONENT PARTS

High Clutch

NAT299

DISASSEMBLY AND ASSEMBLY

Service procedures for high clutch are essentially the same as those for reverse clutch, with the following exception:

SAT853A

I

Check of high clutch operation

SAT854A

AT-155

REPAIR FOR COMPONENT PARTS

High Clutch (Cont’d)

I

Removal and installation of return spring

NAT300

I

Inspection of high clutch return springs

Inspection standard:

Refer to SDS, AT-197.

SAT829A

I

Inspection of high clutch drive plate

Thickness of drive plate:

Standard

1.52 - 1.67 mm (0.0598 - 0.0657 in)

Wear limit

1.40 mm (0.0551 in)

SAT845A

I

Measurement of clearance between retaining plate and snap ring

Specified clearance:

Standard

1.8 - 2.2 mm (0.071 - 0.087 in)

Allowable limit

3.2 mm (0.126 in)

Retaining plate:

Refer to SDS, AT-198.

SAT858A

AT-156

REPAIR FOR COMPONENT PARTS

Forward and Overrun Clutches

AT-157

NAT301

REPAIR FOR COMPONENT PARTS

Forward and Overrun Clutches (Cont’d)

DISASSEMBLY AND ASSEMBLY

Forward and overrun clutches are serviced essentially the same way as reverse clutch is serviced. However, note the following exceptions.

I

Check of forward clutch operation.

SAT860A

I

Check of overrun clutch operation.

SAT861A

I

Removal of forward clutch drum

Remove forward clutch drum from transmission case by holding snap ring.

SAT865A

I

Removal of forward clutch and overrun clutch pistons

1. While holding overrun clutch piston, gradually apply compressed air to oil hole.

SAT862A

2. Remove overrun clutch from forward clutch.

SAT863A

AT-158

REPAIR FOR COMPONENT PARTS

Forward and Overrun Clutches (Cont’d)

I

Removal and installation of return springs

NAT302

I

Inspection of forward clutch and overrun clutch return springs

Inspection standard:

Refer to SDS, AT-197.

SAT829A

I

Inspection of forward clutch drive plates

Thickness of drive plate:

Standard

1.52 - 1.67 mm (0.0598 - 0.0657 in)

Wear limit

1.40 mm (0.0551 in)

SAT845A

I

Inspection of overrun clutch drive plates

Thickness of drive plate:

Standard

1.90 - 2.05 mm (0.0748 - 0.0807 in)

Wear limit

1.80 mm (0.0709 in)

SAT845A

I

Installation of forward clutch piston and overrun clutch piston

1. Install forward clutch piston by turning it slowly and evenly.

I

Apply ATF to inner surface of clutch drum.

SAT866A

AT-159

REPAIR FOR COMPONENT PARTS

Forward and Overrun Clutches (Cont’d)

I

Align notch in forward clutch piston with groove in forward clutch drum.

SAT867A

2. Install overrun clutch by turning it slowly and evenly.

I

Apply ATF to inner surface of forward clutch piston.

SAT868A

I

Measurement of clearance between retaining plate and snap ring of overrun clutch

Specified clearance:

Standard

1.0 - 1.4 mm (0.039 - 0.055 in)

Allowable limit

2.0 mm (0.079 in)

Retaining plate:

Refer to SDS, AT-198.

SAT869A

I

Measurement of clearance between retaining plate and snap ring of forward clutch

Specified clearance:

Standard

0.45 - 0.75 mm (0.0138 - 0.0295 in)

Allowable limit

2.15 mm (0.0846 in)

Retaining plate:

Refer to SDS, AT-198.

SAT870A

AT-160

REPAIR FOR COMPONENT PARTS

Low & Reverse Brake

NAT298

DISASSEMBLY

1. Check operation of low and reverse brake.

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,

I

D-ring might be damaged.

I

Oil seal might be damaged.

I

Fluid might be leaking past piston check ball.

SAT872A

2. Remove snap ring, low and reverse brake drive plates, driven plates and dish plate.

SAT873A

AT-161

REPAIR FOR COMPONENT PARTS

Low & Reverse Brake (Cont’d)

3. Remove low one-way clutch inner race, spring retainer and return spring from transmission case.

4. Remove seal rings from low one-way clutch inner race.

5. Remove needle bearing from low one-way clutch inner race.

SAT382I

6. Remove low and reverse brake piston using compressed air.

7. Remove oil seal and D-ring from piston.

SAT876A

INSPECTION

Low and reverse brake snap ring and spring retainer

I

Check for deformation, or damage.

Low and reverse brake return springs

I

Check for deformation or damage. Also measure free length and outside diameter.

Inspection standard:

Refer to SDS, AT-197.

SAT829A

Low and reverse brake drive plates

I

Check facing for burns, cracks or damage.

I

Measure thickness of facing.

Thickness of drive plate:

Standard value

1.52 - 1.67 mm (0.0598 - 0.0657 in)

Wear limit

1.4 mm (0.055 in)

I

If not within wear limit, replace.

SAT845A

AT-162

REPAIR FOR COMPONENT PARTS

Low & Reverse Brake (Cont’d)

Low one-way clutch inner race

I

Check frictional surface of inner race for wear or damage.

SAT877A

I

Install a new seal rings onto low one-way clutch inner race.

I

Be careful not to expand seal ring gap excessively.

I

Measure seal ring-to-groove clearance.

Inspection standard:

Standard value: 0.10 - 0.25 mm (0.0039 - 0.0098 in)

Allowable limit: 0.25 mm (0.0098 in)

I

If not within allowable limit, replace low one-way clutch inner race.

SAT878A

ASSEMBLY

1. Install needle bearing onto one-way clutch inner race.

I

Pay attention to its direction — Black surface goes to rear side.

I

Apply petroleum jelly to needle bearing.

SAT112B

2. Install oil seal and D-ring onto piston.

I

Apply ATF to oil seal and D-ring.

SAT879A

3. Install piston by rotating it slowly and evenly.

I

Apply ATF to inner surface of transmission case.

SAT880A

AT-163

REPAIR FOR COMPONENT PARTS

Low & Reverse Brake (Cont’d)

4. Install return springs, spring retainer and low one-way clutch inner race onto transmission case.

5. Install dish plate, low and reverse brake drive plates, driven plates and retaining plate.

6. Install snap ring on transmission case.

SAT881A

7. Check operation of low and reverse brake clutch piston. Refer

to “DISASSEMBLY”, AT-161.

SAT872A

8. Measure clearance between retaining plate and snap ring.

If not within allowable limit, select proper retaining plate.

Specified clearance:

Standard

0.8 - 1.1 mm (0.031 - 0.043 in)

Allowable limit

2.5 mm (0.098 in)

Retaining plate:

Refer to SDS, AT-198.

SAT885A

9. Install low one-way clutch inner race seal ring.

I

Apply petroleum jelly to seal ring.

I

Make sure seal rings are pressed firmly into place and held by petroleum jelly.

SAT884A

AT-164

REPAIR FOR COMPONENT PARTS

Forward Clutch Drum Assembly

DISASSEMBLY

1. Remove snap ring from forward clutch drum.

2. Remove side plate from forward clutch drum.

SAT211GA

SAT212G

3. Remove low one-way clutch from forward clutch drum.

4. Remove snap ring from forward clutch drum.

SAT213G

5. Remove needle bearing from forward clutch drum.

SAT891A

AT-165

REPAIR FOR COMPONENT PARTS

Forward Clutch Drum Assembly (Cont’d)

INSPECTION

Forward clutch drum

I

Check spline portion for wear or damage.

I

Check frictional surfaces of low one-way clutch and needle bearing for wear or damage.

SAT892A

Needle bearing and low one-way clutch

I

Check frictional surface for wear or damage.

SAT893A

ASSEMBLY

1. Install needle bearing in forward clutch drum.

2. Install snap ring onto forward clutch drum.

SAT214G

3. Install low one-way clutch onto forward clutch drum by pushing the roller in evenly.

SAT894A

I

Install low one-way clutch with flange facing rearward.

SAT895A

AT-166

REPAIR FOR COMPONENT PARTS

Forward Clutch Drum Assembly (Cont’d)

4. Install side plate onto forward clutch drum.

5. Install snap ring onto forward clutch drum.

SAT887A

AT-167

REPAIR FOR COMPONENT PARTS

Rear Internal Gear and Forward Clutch Hub

SAT896AA

DISASSEMBLY

1. Remove rear internal gear by pushing forward clutch hub forward.

SAT897A

2. Remove thrust washer from rear internal gear.

SAT898A

3. Remove snap ring from forward clutch hub.

SAT899A

AT-168

REPAIR FOR COMPONENT PARTS

Rear Internal Gear and Forward Clutch Hub

(Cont’d)

4. Remove end bearing.

SAT900A

5. Remove forward one-way clutch and end bearing as a unit from forward clutch hub.

SAT955A

6. Remove snap ring from forward clutch hub.

SAT901A

INSPECTION

Rear internal gear and forward clutch hub

I

Check gear for excessive wear, chips or cracks.

I

Check frictional surfaces of forward one-way clutch and thrust washer for wear or damage.

I

Check spline for wear or damage.

SAT902A

Snap ring and end bearing

I

Check for deformation or damage.

SAT903A

AT-169

REPAIR FOR COMPONENT PARTS

Rear Internal Gear and Forward Clutch Hub

(Cont’d)

ASSEMBLY

1. Install snap ring onto forward clutch hub.

2. Install end bearing.

SAT901A

3. Install forward one-way clutch onto clutch hub.

I

Install forward one-way clutch with flange facing rearward.

4. Install end bearing.

5. Install snap ring onto forward clutch hub.

SAT904A

6. Install thrust washer onto rear internal gear.

I

Apply petroleum jelly to thrust washer.

I

Securely insert pawls of thrust washer into holes in rear internal gear.

SAT906A

7. Position forward clutch hub in rear internal gear.

SAT907A

8. After installing, check to assure that forward clutch hub rotates clockwise.

SAT905A

AT-170

REPAIR FOR COMPONENT PARTS

Band Servo Piston Assembly

SAT908AC

DISASSEMBLY

1. Block one oil hole in OD servo piston retainer and the center hole in OD band servo piston.

2. Apply compressed air to the other oil hole in piston retainer to remove OD band servo piston from retainer.

3. Remove D-ring from OD band servo piston.

SAT909A

4. Remove band servo piston assembly from servo piston retainer by pushing it forward.

SAT910A

5. Place piston stem end on a wooden block. While pushing servo piston spring retainer down, remove E-ring.

SAT911A

AT-171

REPAIR FOR COMPONENT PARTS

Band Servo Piston Assembly (Cont’d)

6. Remove servo piston spring retainer, return spring C and piston stem from band servo piston.

SAT912A

7. Remove E-ring from band servo piston.

SAT913A

8. Remove servo cushion spring retainer from band servo piston.

9. Remove D-rings from band servo piston.

10. Remove O-rings from servo piston retainer.

SAT914A

INSPECTION

Pistons, retainers and piston stem

I

Check frictional surfaces for abnormal wear or damage.

SAT915A

Return springs

I

Check for deformation or damage. Measure free length and outer diameter.

Inspection standard:

Refer to SDS, AT-198.

SAT916AA

AT-172

REPAIR FOR COMPONENT PARTS

Band Servo Piston Assembly (Cont’d)

ASSEMBLY

1. Install O-rings onto servo piston retainer.

I

Apply ATF to O-rings.

I

Pay attention to position of each O-ring.

SAT917A

2. Install servo cushion spring retainer onto band servo piston.

SAT918A

3. Install E-ring onto servo cushion spring retainer.

SAT919A

4. Install D-rings onto band servo piston.

I

Apply ATF to D-rings.

SAT920A

5. Install servo piston spring retainer, return spring C and piston stem onto band servo piston.

SAT912A

AT-173

REPAIR FOR COMPONENT PARTS

Band Servo Piston Assembly (Cont’d)

6. Place piston stem end on a wooden block. While pushing servo piston spring retainer down, install E-ring.

SAT921A

7. Install band servo piston assembly onto servo piston retainer by pushing it inward.

SAT922A

8. Install D-ring on OD band servo piston.

I

Apply ATF to D-ring.

SAT923A

9. Install OD band servo piston onto servo piston retainer by pushing it inward.

SAT924A

AT-174

REPAIR FOR COMPONENT PARTS

Parking Pawl Components

SAT758I

DISASSEMBLY

1. Slide return spring to the front of rear extension case flange or adapter case flange.

2. Remove return spring, pawl spacer and parking pawl from rear extension or adapter case.

3. Remove parking pawl shaft from rear extension or adapter case.

SAT226H

4. Remove parking actuator support from rear extension or adapter case.

SAT228H

ASSEMBLY

1. Install parking actuator support onto rear extension or adapter case.

2. Insert parking pawl shaft into rear extension or adapter case.

3. Install return spring, pawl spacer and parking pawl onto parking pawl shaft.

SAT229H

AT-175

REPAIR FOR COMPONENT PARTS

Parking Pawl Components (Cont’d)

4. Bend return spring upward and install it onto rear extension or adapter case.

SAT226H

AT-176