1999 SUBARU LEGACY Service Repair Manual

1. Manual Transmission and Differential
ItemModel
AWD
2200 cc 2500 cc 2500 cc OUTBACK
Type 5-forward speeds with synchromesh and 1-reverse
Transmission gear ratio1st 3.545
2nd 2.111
3rd 1.448
4th 1.088
5th 0.780 0.871
Reverse 3.333
Front reduction
gearFinalType of gear Hypoid
Gear ratio 3.900 4.111
Rear reduction
gearTransferType of gear Helical
Gear ratio 1.000
FinalType of gear Hypoid
Gear ratio 3.900 4.111
Front differential Type and number of gear Straight bevel gear (Bevel pinion: 2, Bevel gear: 2)
Center differential Type and number of gearStraight bevel gear (Bevel pinion: 2, Bevel gear: 2 and vis-
cous coupling)
Transmission gear oilGL-5
Transmission oil capacity 3.5(3.7 US qt, 3.1 Imp qt)
2. Transmission Gear Oil
Recommended oil
B1H0024
3. Transmission Case
Assembly
Drive pinion shim adjustment
Drive pinion shim
Part No.Thickness
mm (in)Part No.Thickness
mm (in)
32295AA0310.150
(0.0059)32295AA0710.250
(0.0098)
32295AA0410.175
(0.0069)32295AA0810.275
(0.0108)
32295AA0510.200
(0.0079)32295AA0910.300
(0.0118)
32295AA0610.225
(0.0089)32295AA1010.500
(0.0197)
Hypoid gear backlash
0.13 Ð 0.18 mm (0.0051 Ð 0.0071 in)
Selection of main shaft rear plate
Main shaft rear plate
Dimension ªAº mm
(in)Part No. Mark
4.00 Ð 4.13
(0.1575 Ð 0.1626)32294AA041 1
3.87 Ð 3.99
(0.1524 Ð 0.1571)32294AA051 2
2
3-1[S100]SPECIFICATIONS AND SERVICE DATA
1. Manual Transmission and Differential

1. Manual Transmission and Differential
ItemModel
AWD
2200 cc 2500 cc 2500 cc OUTBACK
Type 5-forward speeds with synchromesh and 1-reverse
Transmission gear ratio1st 3.545
2nd 2.111
3rd 1.448
4th 1.088
5th 0.780 0.871
Reverse 3.333
Front reduction
gearFinalType of gear Hypoid
Gear ratio 3.900 4.111
Rear reduction
gearTransferType of gear Helical
Gear ratio 1.000
FinalType of gear Hypoid
Gear ratio 3.900 4.111
Front differential Type and number of gear Straight bevel gear (Bevel pinion: 2, Bevel gear: 2)
Center differential Type and number of gearStraight bevel gear (Bevel pinion: 2, Bevel gear: 2 and vis-
cous coupling)
Transmission gear oilGL-5
Transmission oil capacity 3.5(3.7 US qt, 3.1 Imp qt)
2. Transmission Gear Oil
Recommended oil
B1H0024
3. Transmission Case
Assembly
Drive pinion shim adjustment
Drive pinion shim
Part No.Thickness
mm (in)Part No.Thickness
mm (in)
32295AA0310.150
(0.0059)32295AA0710.250
(0.0098)
32295AA0410.175
(0.0069)32295AA0810.275
(0.0108)
32295AA0510.200
(0.0079)32295AA0910.300
(0.0118)
32295AA0610.225
(0.0089)32295AA1010.500
(0.0197)
Hypoid gear backlash
0.13 Ð 0.18 mm (0.0051 Ð 0.0071 in)
Selection of main shaft rear plate
Main shaft rear plate
Dimension ªAº mm
(in)Part No. Mark
4.00 Ð 4.13
(0.1575 Ð 0.1626)32294AA041 1
3.87 Ð 3.99
(0.1524 Ð 0.1571)32294AA051 2
2
3-1[S100]SPECIFICATIONS AND SERVICE DATA
1. Manual Transmission and Differential

1. Manual Transmission and Differential
ItemModel
AWD
2200 cc 2500 cc 2500 cc OUTBACK
Type 5-forward speeds with synchromesh and 1-reverse
Transmission gear ratio1st 3.545
2nd 2.111
3rd 1.448
4th 1.088
5th 0.780 0.871
Reverse 3.333
Front reduction
gearFinalType of gear Hypoid
Gear ratio 3.900 4.111
Rear reduction
gearTransferType of gear Helical
Gear ratio 1.000
FinalType of gear Hypoid
Gear ratio 3.900 4.111
Front differential Type and number of gear Straight bevel gear (Bevel pinion: 2, Bevel gear: 2)
Center differential Type and number of gearStraight bevel gear (Bevel pinion: 2, Bevel gear: 2 and vis-
cous coupling)
Transmission gear oilGL-5
Transmission oil capacity 3.5(3.7 US qt, 3.1 Imp qt)
2. Transmission Gear Oil
Recommended oil
B1H0024
3. Transmission Case
Assembly
Drive pinion shim adjustment
Drive pinion shim
Part No.Thickness
mm (in)Part No.Thickness
mm (in)
32295AA0310.150
(0.0059)32295AA0710.250
(0.0098)
32295AA0410.175
(0.0069)32295AA0810.275
(0.0108)
32295AA0510.200
(0.0079)32295AA0910.300
(0.0118)
32295AA0610.225
(0.0089)32295AA1010.500
(0.0197)
Hypoid gear backlash
0.13 Ð 0.18 mm (0.0051 Ð 0.0071 in)
Selection of main shaft rear plate
Main shaft rear plate
Dimension ªAº mm
(in)Part No. Mark
4.00 Ð 4.13
(0.1575 Ð 0.1626)32294AA041 1
3.87 Ð 3.99
(0.1524 Ð 0.1571)32294AA051 2
2
3-1[S100]SPECIFICATIONS AND SERVICE DATA
1. Manual Transmission and Differential

4. Drive Pinion Assembly
Preload adjustment of thrust bearing
Starting torque
0.3 Ð 0.8 N´m (3 Ð 8 kg-m, 2.6 Ð 6.9 in-lb)
Adjusting washer No. 1
Part No. Thickness mm (in)
803025051 3.925 (0.1545)
803025052 3.950 (0.1555)
803025053 3.975 (0.1565)
803025054 4.000 (0.1575)
803025055 4.025 (0.1585)
803025056 4.050 (0.1594)
803025057 4.075 (0.1604)
Adjusting washer No. 2
Part No. Thickness mm (in)
803025059 3.850 (0.1516)
803025054 4.000 (0.1575)
803025058 4.150 (0.1634)
Assemble a driven shaft and 1st driven gear that
are selected for the proper radial clearance adjust-
ment
Driven shaft 1st driven gear
Part No.Diameter A
mm (in)Part No.
32229AA15049.959 Ð 49.966
(1.9669 Ð 1.9672)32231AA730
32229AA14049.967 Ð 49.975
(1.9672 Ð 1.9675)32231AA720
5. Reverse Idler Gear
Adjustment of reverse idler gear position
Reverse idler gear to transmission case (LH) wall
clearance
6.0 Ð 7.5 mm (0.236 Ð 0.295 in)
Reverse shifter lever
Part No. Mark Remarks
32820AA070 7Further from case
wall
32820AA080 8 Standard
32820AA090 9Closer to the case
wall
After installing a suitable reverse shifter lever,
adjust reverse idler gear to transmission case wall
clearance to within 0 to 0.5 mm (0 to 0.020 in)
using washers.
Washer (20.5´26´t)
Part No.Thickness
mm (in)Part No.Thickness
mm (in)
803020151 0.4 (0.016) 803020154 1.9 (0.075)
803020152 1.1 (0.043) 803020155 2.3 (0.091)
803020153 1.5 (0.059) Ð Ð
3
[S500]3-1SPECIFICATIONS AND SERVICE DATA
5. Reverse Idler Gear

4. Drive Pinion Assembly
Preload adjustment of thrust bearing
Starting torque
0.3 Ð 0.8 N´m (3 Ð 8 kg-m, 2.6 Ð 6.9 in-lb)
Adjusting washer No. 1
Part No. Thickness mm (in)
803025051 3.925 (0.1545)
803025052 3.950 (0.1555)
803025053 3.975 (0.1565)
803025054 4.000 (0.1575)
803025055 4.025 (0.1585)
803025056 4.050 (0.1594)
803025057 4.075 (0.1604)
Adjusting washer No. 2
Part No. Thickness mm (in)
803025059 3.850 (0.1516)
803025054 4.000 (0.1575)
803025058 4.150 (0.1634)
Assemble a driven shaft and 1st driven gear that
are selected for the proper radial clearance adjust-
ment
Driven shaft 1st driven gear
Part No.Diameter A
mm (in)Part No.
32229AA15049.959 Ð 49.966
(1.9669 Ð 1.9672)32231AA730
32229AA14049.967 Ð 49.975
(1.9672 Ð 1.9675)32231AA720
5. Reverse Idler Gear
Adjustment of reverse idler gear position
Reverse idler gear to transmission case (LH) wall
clearance
6.0 Ð 7.5 mm (0.236 Ð 0.295 in)
Reverse shifter lever
Part No. Mark Remarks
32820AA070 7Further from case
wall
32820AA080 8 Standard
32820AA090 9Closer to the case
wall
After installing a suitable reverse shifter lever,
adjust reverse idler gear to transmission case wall
clearance to within 0 to 0.5 mm (0 to 0.020 in)
using washers.
Washer (20.5´26´t)
Part No.Thickness
mm (in)Part No.Thickness
mm (in)
803020151 0.4 (0.016) 803020154 1.9 (0.075)
803020152 1.1 (0.043) 803020155 2.3 (0.091)
803020153 1.5 (0.059) Ð Ð
3
[S500]3-1SPECIFICATIONS AND SERVICE DATA
5. Reverse Idler Gear

6. Shifter Fork And Rod
Select suitable shifter forks so that both coupling
sleeve and reverse driven gear are positioned in
the center of their synchromesh mechanisms.
1st-2nd shifter fork
Part No. Mark Remarks
32804AA060 1Approach to 1st gear
by 0.2 mm (0.008 in)
32804AA070 No mark Standard
32804AA080 3Approach to 2nd gear
by 0.2 mm (0.008 in)
3rd-4th shifter fork
Part No. Mark Remarks
32810AA061 1Approach to 4th gear
by 0.2 mm (0.008 in)
32810AA071 No mark Standard
32810AA101 3Approach to 3rd gear
by 0.2 mm (0.008 in)
5th shifter fork
Part No. Mark Remarks
32812AA200 1Approach to 5th gear
by 0.2 mm (0.008 in)
32812AA210 No mark Standard
32812AA220 3Become distant from
5th gear by 0.2 mm
(0.008 in)
Rod end clearance
A: 1st-2nd Ð 3rd-4th
0.5 Ð 1.5 mm (0.020 Ð 0.059 in)
B: 3rd-4th Ð 5th
0.6 Ð 1.4 mm (0.024 Ð 0.055 in)
7. Transfer Case
Neutral position adjustment
Adjustment shim
Part No. Thickness mm (in)
32190AA000 0.15 (0.0059)
32190AA010 0.30 (0.0118)
Reverse accent shaft
Part No. Mark Remarks
32188AA090 XNeutral position is
closer to 1st.
32188AA100 Y Standard
32188AA110 ZNeutral position is
closer to reverse
gear.
Reverse check plate adjustment
Reverse check plate
Part No. Mark AngleqRemarks
32189AA000 0 28ÉArm stops closer to
5th gear.
32189AA010 1 31ÉArm stops closer to
5th gear.
33189AA020 2 34ÉArm stops in the cen-
ter.
32189AA030 3 37ÉArm stops closer to
reverse gear.
32189AA040 4 40ÉArm stops closer to
reverse gear.
4
3-1[S600]SPECIFICATIONS AND SERVICE DATA
6. Shifter Fork And Rod

6. Shifter Fork And Rod
Select suitable shifter forks so that both coupling
sleeve and reverse driven gear are positioned in
the center of their synchromesh mechanisms.
1st-2nd shifter fork
Part No. Mark Remarks
32804AA060 1Approach to 1st gear
by 0.2 mm (0.008 in)
32804AA070 No mark Standard
32804AA080 3Approach to 2nd gear
by 0.2 mm (0.008 in)
3rd-4th shifter fork
Part No. Mark Remarks
32810AA061 1Approach to 4th gear
by 0.2 mm (0.008 in)
32810AA071 No mark Standard
32810AA101 3Approach to 3rd gear
by 0.2 mm (0.008 in)
5th shifter fork
Part No. Mark Remarks
32812AA200 1Approach to 5th gear
by 0.2 mm (0.008 in)
32812AA210 No mark Standard
32812AA220 3Become distant from
5th gear by 0.2 mm
(0.008 in)
Rod end clearance
A: 1st-2nd Ð 3rd-4th
0.5 Ð 1.5 mm (0.020 Ð 0.059 in)
B: 3rd-4th Ð 5th
0.6 Ð 1.4 mm (0.024 Ð 0.055 in)
7. Transfer Case
Neutral position adjustment
Adjustment shim
Part No. Thickness mm (in)
32190AA000 0.15 (0.0059)
32190AA010 0.30 (0.0118)
Reverse accent shaft
Part No. Mark Remarks
32188AA090 XNeutral position is
closer to 1st.
32188AA100 Y Standard
32188AA110 ZNeutral position is
closer to reverse
gear.
Reverse check plate adjustment
Reverse check plate
Part No. Mark AngleqRemarks
32189AA000 0 28ÉArm stops closer to
5th gear.
32189AA010 1 31ÉArm stops closer to
5th gear.
33189AA020 2 34ÉArm stops in the cen-
ter.
32189AA030 3 37ÉArm stops closer to
reverse gear.
32189AA040 4 40ÉArm stops closer to
reverse gear.
4
3-1[S600]SPECIFICATIONS AND SERVICE DATA
6. Shifter Fork And Rod

8. Extension Assembly
Thrust washer (52´61´t) to ball bearing side
clearance
0.05 Ð 0.30 mm (0.0020 Ð 0.0118 in)
Thrust washer (52´61´t)
Part No. Thickness mm (in)
803052021 0.50 (0.0197)
803052022 0.75 (0.0295)
803052023 1.00 (0.0394)
Thrust washer to center differential side clearance
0.15 Ð 0.35 mm (0.0059 Ð 0.0138 in)
Thrust washer (52´61´t)
Part No. Thickness mm (in)
803036050 0.9 (0.035)
803036054 1.0 (0.039)
803036051 1.1 (0.043)
803036055 1.2 (0.047)
803036052 1.3 (0.051)
803036056 1.4 (0.055)
803036053 1.5 (0.059)
803036057 1.6 (0.063)
803036058 1.7 (0.067)
9. Front Differential
Bevel gear to pinion backlash
0.13 Ð 0.18 mm (0.0051 Ð 0.0071 in)
Washer (38.1´50´t)
Part No.Thickness
mm (in)Part No.Thickness
mm (in)
8030380210.925 Ð
0.950
(0.0364 Ð
0.0374)8030380231.025 Ð
1.050
(0.0404 Ð
0.0413)
8030380220.975 Ð
1.000
(0.0384 Ð
0.0394)ÐÐ
Pinion shaft to axle drive shaft clearance
0 Ð 0.2 mm (0 Ð 0.008 in)
Snap ring (Outer-28)
Part No.Thickness
mm (in)Part No.Thickness
mm (in)
805028011 1.05 (0.0413) 805028012 1.20 (0.0472)
5
[S900]3-1SPECIFICATIONS AND SERVICE DATA
9. Front Differential