Isuzu KB P190. Manual — part 1173

7B1-86 MANUAL TRANSMISSION

14. Select the reverse idler gear snap ring which will

provide the minimum clearance between the
intermediate plate and the snap ring.

226RS022

• There are three snap ring sizes available.

The snap rings are color-coded to indicate their
thickness.

Intermediate Plate and Snap Ring Clearance

Standard: 0 - 0.15 mm (0 - 0.0059 in)

Snap Ring Availability

Thickness Color

Coding

1.2 mm (0.047 in)

White

1.3 mm (0.051 in)

Yellow

1.4 mm (0.055 in)

Blue

226RS021

• Use a pair of snap ring pliers to install the snap

ring to the reverse idler shaft.

The snap ring must be fully inserted into the
reverse idler shaft snap ring groove.

15. Install the thrust washer and lock ball by performing

the following steps:
• Use a thickness gauge to measure the

clearance between the 5th gear and the thrust
washer.

5th Gear and Thrust Washer Clearance

Standard: 0.10 - 0.25 mm (0.004 - 0.010 in)
• Measure clearance "A" as shown in the figure.

226RS023

• Select an appropriate thrust washer from the

chart.

• There are four thrust washer sizes available.

Thrust Washer Availability

Thickness

mm (in)

Color

Coding

A mm (in)

Clearance

mm (in)

7.9 (0.311)

White

8.05 - 8.1

(0.317-0.319)

0.15 - 0.25

(0.006-0.010)

8.0 (0.315)

Yellow

8.1 - 8.2

(0.319-0.323)

0.1 - 0.25

(0.004-0.010)

8.1 (0.319)

Green

8.2 - 8.3

(0.323-0.327)

0.1 - 0.25

(0.004-0.010)

8.2 (0.323)

Blue

8.3 - 8.36

(0.327-0.329)

0.1 - 0.21

(0.004-0.008)

• The thrust washers are color coded to indicate

their thickness as shown in the figure.

MANUAL TRANSMISSION 7B1-87

226RS024

• Apply grease to the thrust washer and the lock

ball.

• Install the thrust washer and the lock ball.

16. Install the thrust plate and retainer.

17. Apply engine oil to the bearing inner and outer

circumference.

Use the installer 5-8840-2159-0 to install the ball
bearing to the mainshaft.

226L100002

18.

Apply engine oil to the oil seal collar inner
circumference.

Install the oil seal collar to the mainshaft by using
the installer 5-8840-2159-0.

19. Install the oil seal collar snap ring.

7B1-88 MANUAL TRANSMISSION

Top Gear Shaft, Main Gear Shaft, and Counter Gear Shaft

Disassembled View

226RS026

MANUAL TRANSMISSION 7B1-89

Legend

(1) Top Gear Shaft Snap Ring

(16) 1st Outside Ring

(2) Top Gear Shaft

(17) 1st Block Ring

(3) Ball Bearing

(18) Needle Bearing

(4) Needle Bearing

(19) Clutch Hub Snap Ring

(5) Top Block Ring

(20) 1st-2nd Synchronizer Assembly

(6) Mainshaft Snap Ring

(21) 2nd Block Ring

(7) 3rd-4th Synchronizer Assembly

(22) 2nd Outside Ring

(8) 3rd Block Ring

(23) 2nd Inside Ring

(9) 3rd Gear

(24) 2nd Gear

(10) Needle Bearing

(25) Needle Bearing

(11) Needle Bearing Collar

(26) Mainshaft

(12) Mainshaft Ball Bearing

(27) Bearing Snap Ring

(13) 1st Gear Thrust Bearing

(28) Front Roller Bearing

(14) 1st Gear

(29) Center Roller Bearing

(15) 1st Inside Ring

(30) Counter Gear Shaft