Nissan Frontier D22. Instruction — part 122
FORWARD AND OVERRUN CLUTCHES
AT-457
[RE4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
●
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
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
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:
●
D-ring might be damaged.
●
Oil seal might be damaged.
●
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]
D
E
F
G
H
I
J
K
L
M
A
B
AT
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
●
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.
●
If not within wear limit, replace.
SAT382I
SAT876A
Inspection standard
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.
●
Install a new seal rings onto low one-way clutch inner race.
●
Be careful not to expand seal ring gap excessively.
●
Measure seal ring-to-groove clearance.
●
If not within allowable limit, replace low one-way clutch inner
race.
Assembly
ECS007Q3
1.
Install needle bearing onto one-way clutch inner race.
●
Pay attention to its direction — Black surface goes to rear
side.
●
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
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