Nissan Pathfinder. Manual — part 412
DLN-90
< UNIT DISASSEMBLY AND ASSEMBLY >
[TRANSFER: TY21C]
DRIVE PINION
T2 [Ring gear bearing adjusting shim (transfer cover side)]
• T2 =
−Y +Z +(B +X/2) −C −D −H +(M/100) +0.071 mm (0.0028 in)
T3 (Drive pinion adjusting shim)
• T3 =
−Q +(R +S/2) −K +(O/100)
• Check dimension (M) on the ring gear side face.
NOTE:
Dimension “M” indicates the difference between the optimum
engagement and standard dimensions in increments of 0.01 mm
(0.0004 in) written on the ring gear side face.
• Check dimension (O) on the gear end of drive pinion.
NOTE:
Dimension “O” indicates the difference between the optimum
engagement and the standard dimensions in increments of 0.01
mm (0.0004 in) written on the gear end of drive pinion.
PINION BEARING PRELOAD
CAUTION:
When measuring preload, the rotating speed must be set to 30 rpm.
1. Remove ring gear shaft assembly from the transfer case. Refer to
2. Rotate the companion flange back and forth from 2 to 3 times to check for unusual noise, binding, sticking,
and so on.
3. Rotate the companion flange at least 20 times to check for smooth operation of the bearing.
4. Measure the pinion bearing preload with the preload gauge (A)
[SST: ST3127S000 (J-25765-A)].
CAUTION:
Each rotational part should rotate smoothly with the speci-
fied gear oil.
• If outside the standard, disassemble the drive pinion assembly
to check and adjust each part.
TOTAL PRELOAD
CAUTION:
When measuring preload, the rotating speed must be set to 30 rpm.
1. Measure pinion bearing preload.
CAUTION:
Check that the pinion bearing preload is within the standard.
2. Assemble the ring gear shaft assembly to the transfer case. Refer to
3. Install transfer cover to check and adjust each part. Refer to
.
4. Rotate the companion flange at least 20 times to check for smooth operation of the bearing.
JSDIA2495ZZ
JSDIA2496ZZ
Pinion bearing preload
: Refer to
.
JSDIA2500ZZ
DRIVE PINION
DLN-91
< UNIT DISASSEMBLY AND ASSEMBLY >
[TRANSFER: TY21C]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
5. Measure the total preload with the preload gauge (A) [SST:
ST3127S000 (J-25765-A)].
CAUTION:
Each rotational part should rotate smoothly with the speci-
fied gear oil.
• If outside the standard, disassemble the transfer assembly to
check and adjust each part. Measure it with the transfer case
oil seal and transfer cover oil seal removed when measuring
total preload after disassembly. Then install transfer case oil
seals and transfer cover oil seal.
BACKLASH
1. Install the bolt to the companion flange.
2. Fit a dial indicator onto the bolt (A).
3. Measure the circumference backlash of the companion flange.
• If outside the standard, disassemble the transfer assembly to
check and adjust each part.
TOOTH CONTACT
1. Remove transfer cover. Refer to
2. Remove ring gear shaft assembly from transfer case. Refer to
.
3. Apply red lead onto the ring gear.
CAUTION:
Apply red lead to both faces of 3 to 4 gears at 4 locations
evenly spaced on the ring gear.
4. Assemble the ring gear shaft assembly to the transfer case.
.
5. Install transfer cover to check and adjust each part. Refer to
NOTE:
At this timing, O-ring installing to transfer cover is not necessary.
Install O-ring after backlash and tooth contact are checked.
6. Remove the plug from the transfer case.
7. Rotate the companion flange back and forth several times, and check the drive pinion gear to ring gear
tooth contact by viewing from the plug hole.
Total preload
: Refer to
JSDIA2500ZZ
Backlash
: Refer to
.
JSDIA2501ZZ
JSDIA2188ZZ
DLN-92
< UNIT DISASSEMBLY AND ASSEMBLY >
[TRANSFER: TY21C]
DRIVE PINION
Tooth Contact Judgment Guide
8. Follow the procedure below to adjust pinion height (dimension
X) if tooth contact is improper. For selecting adjusting shim, refer
to the latest parts information.
CAUTION:
If no adjusting shim with the calculated value is available,
select the thicker and closest one.
• Thicken the drive pinion adjusting shim to move the drive pin-
ion closer to the ring gear in case of face contact or heel con-
tact.
CAUTION:
Only one adjusting shim can be selected.
JSDIA4035GB
JSDIA1221ZZ
PDIA0440E
DRIVE PINION
DLN-93
< UNIT DISASSEMBLY AND ASSEMBLY >
[TRANSFER: TY21C]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
• Thin the drive pinion adjusting shim to move the drive pinion
farther from the ring gear in case of flank contact or toe con-
tact.
CAUTION:
Only one adjusting shim can be selected.
COMPANION FLANGE RUNOUT
1. Fit a dial indicator onto the companion flange face (inner side of
the propeller shaft mounting bolt holes).
2. Rotate the companion flange to check for runout.
3. Fit a test indicator to the inner side of the companion flange
(socket diameter).
4. Rotate the companion flange to check for runout.
5. Follow the procedure below to adjust if runout value is outside
the repair limit.
a. Check for runout while changing the phase between companion
flange and drive pinion in 90
° steps. Then search for the mini-
mum point.
b. Replace companion flange if runout value is still outside the limit
after the phase has been changed.
c. Adjust assembly status of the pinion bearing and drive pinion, or
replace pinion bearing assembly if runout is outside the standard
after the companion flange is replaced.
Inspection
INFOID:0000000009177787
INSPECTION AFTER DISASSEMBLY
Check items below. If necessary, replace them with new ones.
Gear and Shaft
Check gear face and shaft for wear, cracks, damage, and seizure.
CAUTION:
Replace ring gear and drive pinion as a set (hypoid gear set) if any malfunction is detected on the ring
gear or drive pinion.
Bearing
Check for seizure, peeling, wear, corrosion, sticking, unusual noise, roughness in hand turning, and other
damage.
Shim
Check for seizure, damage, and unusual wear.
PDIA0441E
Companion flange runout : Refer to
.
Companion flange runout : Refer to
.
JSDIA3981ZZ
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