Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 426

6MT-41

Neutral Position Switch

MANUAL TRANSMISSION AND DIFFERENTIAL

10.Neutral Position Switch

A: REMOVAL

1) Remove the manual transmission assembly

from the vehicle. <Ref. to 6MT-31, REMOVAL,

Manual Transmission Assembly.>

2) Disconnect the connector and clip of the neutral

position switch.

3) Remove the neutral position switch.

B: INSTALLATION

1) Install the neutral position switch.
NOTE:

Use a new gasket.
Tightening torque:

32 N·m (3.3 kgf-m, 23.6 ft-lb)

2) Connect the connector and clip of the neutral po-

sition switch.

3) Install the manual transmission assembly to the

vehicle. <Ref. to 6MT-33, INSTALLATION, Manual

Transmission Assembly.>

(A) Back-up light switch connector (gray)
(B) Neutral position switch connector (brown)

(C) Clip

(A) Back-up light switch
(B) Neutral position switch

MT-00471

(A)

(B)

(C)

(C)

MT-00472

(A)

(B)

(A) Back-up light switch
(B) Neutral position switch

(A) Back-up light switch connector (gray)
(B) Neutral position switch connector (brown)

(C) Clip

MT-00472

(A)

(B)

MT-00471

(A)

(B)

(C)

(C)

6MT-42

Neutral Position Switch

MANUAL TRANSMISSION AND DIFFERENTIAL

C: INSPECTION

1) Disconnect the ground cable from battery.

2) Remove the intercooler. <Ref. to IN(STI)-12,

REMOVAL, Intercooler.>

3) Disconnect the transmission harness and chas-

sis harness.

4) Measure the resistance between neutral posi-

tion switch terminals. If not within the standard val-

ues, replace the neutral position switch.

(A) Transmission harness connectors
(B) Pitching stopper

Gear shift position

Terminal No.

Standard

Neutral position

2 and 5

Less than 1 Ω

Other positions

1 MΩ or more

MT-01741

(A)

(B)

1

4

3

5

6

2

MT-00947

6MT-43

Extension Case

MANUAL TRANSMISSION AND DIFFERENTIAL

11.Extension Case

A: REMOVAL

1) Remove the manual transmission assembly

from the vehicle. <Ref. to 6MT-31, REMOVAL,

Manual Transmission Assembly.>

2) Prepare the transmission for overhaul. <Ref. to

6MT-37, Preparation for Overhaul.>

3) Remove the extension case.

4) Remove any remaining liquid gasket from the

extension case and transmission case.

B: INSTALLATION

1) Select the thrust washer of the transfer driven

gear, and attach to the extension case. <Ref. to

6MT-45, ADJUSTMENT, Extension Case.>

2) Apply a thin coat of oil to the outer surface of the

bearing cone, and attach to the extension case.

3) Select the thrust washer of the transfer drive

gear, and attach to the center differential.

4) Apply liquid gasket to the transmission case.
Liquid gasket:

THREE BOND 1215 (Part No. 004403007) or

equivalent

5) Install the extension case.
Tightening torque:

48 N·m (4.9 kgf-m, 35.4 ft-lb)

NOTE:

Insert the stopper section of the center differential

between the oil guide.

6) Install the manual transmission assembly to the

vehicle. <Ref. to 6MT-33, INSTALLATION, Manual

Transmission Assembly.>

MT-00475

MT-00476

(A) Oil guide
(B) Stopper

(C) Center differential
(D) Extension case

MT-00475

MT-00973

(A)

(B)

(C)

(D)

6MT-44

Extension Case

MANUAL TRANSMISSION AND DIFFERENTIAL

C: DISASSEMBLY

1) Remove the transfer drive gear. <Ref. to 6MT-

53, REMOVAL, Transfer Drive Gear.>

2) Remove the oil guide.

3) Remove the shift bracket.

4) Remove the bearing cone using the ST.

ST 18758AA000 PULLER

5) Remove the adjusting washer and oil plate.

6) Remove the shifter arm oil seal.

7) Remove the reverse check system. <Ref. to

6MT-50, REMOVAL, Reverse Check System.>

8) Remove the extension oil seal. <Ref. to 6MT-27,

REPLACEMENT, Oil Seal.>

D: ASSEMBLY

1) Install the reverse check system. <Ref. to 6MT-

51, INSTALLATION, Reverse Check System.>

2) Install the extension case oil seal. <Ref. to 6MT-

27, REPLACEMENT, Oil Seal.>

3) Install a shifter arm oil seal using the ST.

ST1 18657AA000

INSTALLER

ST2 18671AA000

OIL SEAL GUIDE

4) Install the oil plate.

(A) Bearing cone

(A) Adjusting washer
(B) Oil plate

MT-00477

MT-00478

MT-00479

(A)

ST

MT-00480

(A)

(B)

(A) Oil seal

(A) Oil seal

MT-00481

(A)

MT-00482

(A)

ST1

ST2

MT-00483