Isuzu KB P190. Manual — part 146

4C2-6 SHIFT ON THE FLY SYSTEM

412RS045

14.Needle Bearing

Remove needle bearing from inner shaft by using a special

tool.

Remover

: 5-8840-0027-0

Sliding hammer

: 5-8840-0084-0

NOTE:

Be careful not to damage the shaft.

15.Oil Seal

Remove oil seal from front axle case.

NOTE:

Be careful not to damage the front axle case.

Inspection and Repair

Inspect the removed parts. If there are abnormalities such as
wear and damage, take corrective action or replace.

Visual Check

• Check and see if the inner shaft has such

abnormalities as wear and damage.

412RW014

412RS008

• When inspecting the inner shaft, be sure to check and

see if its splined part is twisted, worn, or cracked. If so,
replace with a new shaft. In case such an abnormality
in its gear part (a slide with sleeve), replace the shaft.

SHIFT ON THE FLY SYSTEM 4C2-7

412RS026

Inner Shaft Run-Out

With both end centers supported, rotate the shaft slowly
and measure deflection with a dial gauge.

Inner Shaft Run-Out (Limit)

mm (in)

0.5 (0.02)

NOTE:
Do not heat the shaft to correct its bend.

RTW440SH000101

Inner Shaft Bearing

Inspect the state of inner shaft bearing. If any abnormality
such as smooth less is found, replace with a new inner
shaft bearing.

Insert a clutch gear and check the state of needle bearing.

If there is an abnormality such as smooth less, replace the
needle bearing.

Sleeve

Visual Check

Check and see that there is not wear, damage, or checking
in the sleeve.

NOTE:

Close inspection of the groove and inner gear are required

because those are important parts.

412RW011

Functional Check

Operate the sleeve with the inner shaft combined with the
clutch gear.

If smooth less is felt, replace the sleeve.

NOTE:

Gear oil should be applied to the contact surface of gear.

412RW022

Dimensional Check

Check the width of sleeve center groove.

Sleeve Center Groove (Limit)

mm (in)

7.1 (0.28)

4C2-8 SHIFT ON THE FLY SYSTEM

RTW440SH000201

Clutch Gear

Visual Check

Check and see the there is not wear, damage, crack, or
any other abnormality in the clutch gear.

Functional Check

If there is an abnormality such as smooth less when
operated in combination with sleeve, replace the clutch
gear.

NOTE:

When inspection, gear oil should be applied to the contact
surface of gear.

RTW440SH000301

Dimensional Check

Make sure of the size illustrated.

Clutch Gear Out Side Diameter (Limit)

mm (in)

36.98 (1.46)

RTW440SH000501

RTW440SH000401

Actuator

Visual Check

Check and see that there is no damage, cracking, or other
abnormality.

Functional Check

Make sure of function with voltage (12V) applied to
terminal

3

,

4

and set the tester to terminal

1

,

2

in

accordance with the table below.

State Port

3

Port

4

Port

1

,

2

Conducting

Function

A

+

−−−−

C

B

−−−−

+

× D

If there is an abnormality, replace the actuator as an
assembly.

NOTE:

Be careful not to permit the entry of water or dust into the ports
of the actuator.
Do not open the actuator cover, if the actuator will be reused.

SHIFT ON THE FLY SYSTEM 4C2-9

RTW440SH000601

RTW440SH000801

Dimension Check

Measure illustration sized A, B, and C

Limit mm

(in)

A 64.3

(2.53)

B 6.7

(0.26)

C 6.7

(0.26)

RTW440SH000701

Reassembly

15. Oil seal

Install the new oil seal which has been immersed in
differential gear oil, by using an oil seal installer.

Installer

5-8840-2407-0

Grip

5-8840-0007-0

412RS051

14. Needle Bearing

Force a new needle bearing into inner shaft by using a
special tool.

Installer

: 5-8840-2408-0

Grip

: 5-8840-0007-0