Nissan Frontier D22. Manual - part 122

FORWARD AND OVERRUN CLUTCHES

AT-457

[RE4R01A]

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

●

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

Specified clearance

Standard

: 1.0 - 1.4 mm (0.039 - 0.055 in)

Allowable limit

: 2.4 mm (0.094 in)

Retaining plate

: Refer to 

AT-499, "FORWARD 

CLUTCH"

 .

Specified clearance

Standard

: 0.35 - 0.75 mm (0.0138 - 0.0295 in)

Allowable limit

VG33E only

Model 4FX17 (2WD)

: 2.15 mm (0.085 in)

Model 4FX18 (4WD)

: 2.15 mm (0.085 in)

VG33ER only

Model 4FX19 (2WD)

: 2.15 mm (0.085 in)

Model 4FX20 (4WD)

: 2.35 mm (0.093 in)

Retaining plate

: Refer to 

AT-499, "FORWARD 

CLUTCH"

 .

SAT869A

SAT870A

AT-458

[RE4R01A]

LOW & REVERSE BRAKE

LOW & REVERSE BRAKE

PFP:31645

Components

ECS007Q0

Disassembly

ECS007Q1

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:

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

LAT423

SAT872A

SAT873A

LOW & REVERSE BRAKE

AT-459

[RE4R01A]

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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.

6.

Remove low and reverse brake piston using compressed air.

7.

Remove oil seal and D-ring from piston.

Inspection

ECS007Q2

LOW AND REVERSE BRAKE SNAP RING AND SPRING RETAINER

●

Check for deformation, or damage.

LOW AND REVERSE BRAKE RETURN SPRINGS

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

LOW AND REVERSE BRAKE DRIVE PLATES

●

Check facing for burns, cracks or damage.

●

Measure thickness of facing.

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If not within wear limit, replace.

SAT382I

SAT876A

Inspection standard

: Refer to 

AT-497, "Return 

Springs"

 .

SAT829A

Thickness of drive plate

Standard value

: 1.52 - 1.67 mm (0.0598 - 
0.0657 in)

Wear limit

: 1.40 mm (0.0551 in)

SAT845A

AT-460

[RE4R01A]

LOW & REVERSE BRAKE

LOW ONE-WAY CLUTCH INNER RACE

●

Check frictional surface of inner race for wear or damage.

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

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Be careful not to expand seal ring gap excessively.

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Measure seal ring-to-groove clearance.

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

Assembly

ECS007Q3

1.

Install needle bearing onto one-way clutch inner race.

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

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Apply petroleum jelly to needle bearing.

2.

Install oil seal and D-ring onto piston.

●

Apply ATF to oil seal and D-ring.

SAT877A

Inspection standard

Standard value

: 0.10 - 0.25 mm (0.0039 - 
0.0098 in)

Allowable limit

: 0.25 mm (0.0098 in)

SAT878A

SAT112B

SAT879A