MANUAL TRANSMISSION AND DIFFERENTIAL(5MT) > Main Shaft Assembly for Dual-Range

ASSEMBLY

1. When the sleeve & hub assemblies have been disassembled, reassemble by aligning the alignment marks.

NOTE:

Position the spring opening of the hub assembly and the high-low sleeve at a position spaced apart by 120°.

(A)

High-low coupling sleeve

(B)

Shifting insert

(C)

High-low synchronizer spring

(D)

High-low synchronizer hub

(E)

Sleeve

(F)

Insert key

(G)

3rd-4th synchronizer hub

(H)

Sleeve

(I)

Insert key

(J)

5th reverse synchronizer hub

(K)

High side

(L)

Low side

(M)

3rd side

(N)

4th side

(O)

5th side

(P)

Reverse side

2. Install the 3rd drive gear, outer baulk ring, synchro cone, inner baulk ring, sleeve & hub assembly for the 3rd needle bearing, on the transmission main shaft.

NOTE:

Align the groove in baulk ring with the shifting insert.

(A)

3rd needle bearing

(B)

3rd drive gear

(C)

Inner baulk ring

(D)

Synchro cone

(E)

Outer baulk ring

(F)

Sleeve & hub ASSY

3. Install the 4th needle bearing race onto transmission main shaft using ST1, ST2 and press.

CAUTION:

Do not apply a load in excess of 10 kN (1 ton, 1.1 US ton, 1.0 Imp ton).

ST1    899714110 REMOVER
ST2    499877000 RACE 4-5 INSTALLER

(A)

4th needle bearing race

4. Install the baulk ring, needle bearing, 4th drive gear and 4th gear thrust washer to the transmission main shaft.

NOTE:

Align the baulk ring and sleeve & hub assembly with the key groove.

(A)

Groove

(B)

Face this surface to the 4th gear side.

5. Press-fit the ball bearing into the rear section of transmission main shaft using ST1, ST2 and a press.

CAUTION:

Do not apply a load in excess of 10 kN (1 ton, 1.1 US ton, 1.0 Imp ton).

ST1    899714110 REMOVER
ST2    499877000 RACE 4-5 INSTALLER

6. Using the ST1 and ST2, install the 5th gear thrust washer and 5th needle bearing race onto the rear section of transmission main shaft.

CAUTION:

Do not apply a load in excess of 10 kN (1 ton, 1.1 US ton, 1.0 Imp ton).

NOTE:

Make sure the thrust washer is oriented in the correct direction.

ST1    899714110 REMOVER
ST2    499877000 RACE 4-5 INSTALLER

(A)

Face this surface to the 5th gear side.

7. Install rest of the parts to the rear section of the transmission main shaft.

CAUTION:

Install the baulk lever so that the concave side faces toward the 5th hub.

(A)

Baulk lever

(B)

5th hub

Fit the convex portions of baulk ring with the gaps between baulk levers.

(A)

Baulk ring

(B)

Baulk lever

(C)

5th hub

(A)

Needle bearing

(B)

5th drive gear

(C)

Baulk ring

(D)

5th hub & sleeve No. 2

(E)

Lock washer

(F)

Lock nut

(G)

Baulk lever

8. Tighten the lock nuts to the specified torque using ST1 and ST2.

9. Crimp lock nuts in two locations after tightening.

ST1    499987003 SOCKET WRENCH (35)
ST2    498937000 TRANSMISSION HOLDER

Tightening torque:

120 N·m (12.2 kgf-m, 88.5 ft-lb)

10. Attach the needle bearing to the main shaft.

11. Install rest of the parts to the front section of the transmission main shaft.

NOTE:

When installing the needle bearing, make sure not to damage the raised section on the transmission main shaft

Face the grooved side towards the input gear.

Align the groove of the high-low baulk ring to the shifting insert.

(A)

Ball

(B)

Input low gear spacer

(C)

Needle bearing

(D)

Input low gear

(E)

Friction damper

(F)

High-low baulk ring

(G)

Sleeve & hub ASSY

12. Using ST1 and ST2 install the new snap ring to the transmission main shaft.

NOTE:

Select an appropriate outer snap ring, so that the clearance between the snap ring and hub will become between 0.060 — 0.100 mm (0.0024 — 0.0039 in).

ST1    499757002 INSTALLER
ST2    499757001 SNAP RING GUIDE

Snap ring

Part No.

Thickness mm (in)

805025051

2.42 (0.0953)

805025052

2.47 (0.0972)

805025053

2.52 (0.0992)

805025054

2.57 (0.1012)

805025055

2.62 (0.1031)

805025056

2.67 (0.1051)

805025057

2.72 (0.1071)

805025058

2.37 (0.0933)