1998 NISSAN PATROL service

TRANSFER
SECTION
TF
CONTENTS
PREPARATION................................................................1
Special Service Tools ..................................................1
Commercial Service Tools ...........................................2
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................3
NVH Troubleshooting Chart.........................................3
DESCRIPTION.................................................................4
Cross-sectional View ...................................................4
ON-VEHICLE SERVICE..................................................5
Replacing Oil Seal .......................................................5
Checking Position Switch ............................................7
REMOVAL AND INSTALLATION....................................8
Removal .......................................................................8
Installation ....................................................................8
TRANSFER GEAR CONTROL.......................................9
MAJOR OVERHAUL.....................................................10
Case Components .....................................................10
Gear Components ..................................................... 11Shift Control Components .........................................12
DISASSEMBLY..............................................................13
REPAIR FOR COMPONENT PARTS............................19
Mainshaft ...................................................................19
Front Drive Shaft .......................................................20
Counter Gear .............................................................21
Main Gear ..................................................................22
Front Case .................................................................24
Front Case Cover ......................................................24
Center Case...............................................................24
Bearing Retainer ........................................................25
Rear Case..................................................................25
Shift Control Components .........................................26
ASSEMBLY....................................................................27
SERVICE DATA AND SPECIFICATIONS (SDS)..........33
General Speci®cations ...............................................33
Inspection and Adjustment ........................................33
TF

Special Service Tools
*: Special tool or commercial equivalent
Tool number
Tool nameDescription
KV38104700*
Flange wrench
NT428
Removing front companion ¯ange nut
Installing front companion ¯ange nut
ST30021000*
Puller
NT411
Removing counter gear front bearing
ST30031000*
Puller
NT411
Removing counter gear rear bearing
ST33290001*
Puller
NT414
Removing center case oil seal
Removing rear oil seal
ST22452000*
Drift
NT065
Installing mainshaft rear bearing
a: 45 mm (1.77 in) dia.
b: 36 mm (1.42 in) dia.
ST33061000*
Drift
NT116
Removing main gear bearing
a: 28.5 mm (1.122 in) dia.
b: 38 mm (1.50 in) dia.
ST30613000*
Drift
NT073
Installing counter gear rear bearing
Installing main gear bearing
Installing cover oil seal
a: 72 mm (2.83 in) dia.
b: 48 mm (1.89 in) dia.
ST33200000*
Drift
NT091
Installing counter gear front bearing
Removing cover oil seal
a: 60 mm (2.36 in) dia.
b: 44.5 mm (1.752 in) dia.
ST30720000*
Drift
NT115
Installing counter case oil seal
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.
PREPARATION
TF-1

Commercial Service Tools
Tool name Description
Puller
NT077
Removing front and rear companion ¯anges
Removing mainshaft rear bearing and clutch
gear
Removing L & H hub
Removing front drive shaft front bearing
Removing front drive shaft rear bearing
Removing main gear bearing
Drift
NT117
Installing shift shaft oil seal
a: 26 mm (1.02 in) dia.
b: 20 mm (0.79 in) dia.
c: 40 mm (1.57 in)
Drift
NT117
Installing L & H hub
a: 60 mm (2.36 in) dia.
b: 50 mm (1.97 in) dia.
c: 60 mm (2.36 in)
Drift
NT117
Installing clutch gear
a: 55 mm (2.17 in) dia.
b: 45 mm (1.77 in) dia.
c: 160 mm (6.30 in)
Drift
NT117
Installing rear oil seal
a: 75 mm (2.95 in) dia.
b: 67 mm (2.64 in) dia.
c: 60 mm (2.36 in)
PREPARATION
TF-2

Replacing Oil Seal
CENTER CASE OIL SEAL
1. Remove front propeller shaft. Refer to PD section (``Removal
and Installation'', ``PROPELLER SHAFT'').
2. Remove companion ¯ange nut.
3. Remove front companion ¯ange.
4. Remove center case oil seal.
5. Install center case oil seal.
+Before installing, apply multi-purpose grease to seal lip.
6. Reinstall any part removed.
SHIFT SHAFT OIL SEAL
1. Remove transfer control lever from transfer cross shaft.
SMT091B
SMT092B
SMT093B
SMT094B
SMT251D
ON-VEHICLE SERVICE
TF-5

2. Remove shift shaft oil seal.
+Be careful not to damage inner shift lever.
3. Install shift shaft oil seal.
+Before installing, apply multi-purpose grease to seal lip.
4. Install transfer control lever.
REAR OIL SEAL
1. Remove rear propeller shaft. Refer to PD section (``Removal
and Installation'', ``PROPELLER SHAFT'').
2. Remove brake drum.
3. Remove companion ¯ange nut.
4. Remove rear companion ¯ange.
5. Remove center brake assembly.
6. Remove rear oil seal.
7. Install rear oil seal.
+Before installing, apply multi-purpose grease to seal lip.
8. Reinstall any part removed.
SMT097B
SMT096B
SMT323B
SMT324B
SMT325B
ON-VEHICLE SERVICE
Replacing Oil Seal (Cont'd)
TF-6

Checking Position Switch
4WD SWITCH
Transfer control lever position Continuity
4H, 4L Yes
Except above No
NEUTRAL POSITION SWITCH
Transfer control lever position Continuity
Between 4H and 4L
(``PUSH'' position)Ye s
Except above No
SMT252D
SMT253D
ON-VEHICLE SERVICE
TF-7

General Speci®cations
Transfer model TX12A
Gear ratioHigh 1.000
Low 2.020
Number of teethMain gear 29
Low gear 37
Counter
gearHigh 38
Low 24
Front drive sprocket 41
Front drive shaft 41
Fluid capacity liters (Imp qt) 1.9 (1-5/8)
Inspection and Adjustment
GEAR END PLAY
Unit: mm (in)
Front drive sprocket 0.20 - 0.35 (0.0079 - 0.0138)
Low gear 0.20 - 0.35 (0.0079 - 0.0138)
Counter gear 0 - 0.2 (0 - 0.008)
CLEARANCE BETWEEN BAULK RING AND
CLUTCH GEAR
Unit: mm (in)
Standard Wear limit
1.0 - 1.5 (0.039 - 0.059) 0.5 (0.020)
AVAILABLE SNAP RING
Mainshaft front bearing
Unit: mm (in)
Allowable clearance 0 - 0.15 (0 - 0.0059)
Thickness Part number
3.0 (0.118)
3.1 (0.122)
3.2 (0.126)33138-73P10
33138-73P11
33138-73P12
Main gear bearing
Unit: mm (in)
Allowable clearance 0 - 0.15 (0 - 0.0059)
Thickness Part number
2.6 (0.102)
2.7 (0.106)
2.8 (0.110)33114-73P00
33114-73P01
33114-73P02
AVAILABLE SHIM
Counter gear rear bearing
Distance ``A''
mm (in)Shim(s)
Thickness mm (in) Part number
40.6 - 40.5
(1.598 - 1.594)Not necessary
40.5 - 40.4
(1.594 - 1.591)0.1 (0.004) 33112-C6900
40.4 - 40.3
(1.591 - 1.587)0.2 (0.008) 33112-C6901
40.3 - 40.2
(1.587 - 1.583)0.3 (0.012) 33112-C6902
40.2 - 40.1
(1.583 - 1.579)0.4 (0.016) 33112-C6903
40.1 - 40.0
(1.579 - 1.575)0.5 (0.020) 33112-33G00
40.0 - 39.9
(1.575 - 1.571)0.6 (0.024) 33112-33G01
SMT335A
SERVICE DATA AND SPECIFICATIONS (SDS)
TF-33