Isuzu KB P190. Manual - part 1151

7B-40  MSG MODEL 

  MAJOR COMPONENTS 

 
 

 
 
 
 
 

 

 

RTW47BLF000401 

 

Reassembly steps 

 

1. Intermediate plate with gear assembly 

▲  2. Rear cover with oil seal 

▲  3. Transmission case 

▲  4. Bearing snap ring 
 

5. Counter gear snap ring 

 

 

 
▲  6. Front cover with oil seal 
 

7. Speedometer driven gear 

 

8. Gear control box assembly 

 

9. Speedometer sensor 

  10. Clutch shift fork 
  11. Clutch shift block and release bearing 
 

 

MSG MODEL  7B-41 

 

 

RTW47BSH000201 

Important Operations 

2.  Rear Cover with Oil Seal 

1)  Align the pins at the lower side of the rear cover with the

holes in the lower side of the intermediate plate. 

2)  Apply recommended liquid gasket (Three Bond TB1215) or 

its equivalent to the rear cover fitting surfaces. 

3)  Install the rear cover to the intermediate plate. 

4)  Tighten the rear cover bolts to the specified torque. 

Rear Cover Bolt Torque 

N

⋅m(kgf⋅m/lb⋅ft)

37 (3.8 / 27) 

Note: 
Take care not to twist or puncture the oil seal during the 
installation procedure. 

 

  

 

RTW47BSH000301 

 

 

3. Transmission Case 

4.  Bearing Snap Ring 

1)  Apply the engine oil to the transmission case top gear shaft 

ball bearing fitting faces. 

2)  Apply recommended liquid gasket or its equivalent to the

transmission case fitting surfaces. 

3)  Install the transmission case to the intermediate plate. 

4)  Pull the top gear shaft from the transmission case until the

ball bearing snap ring grove protrudes from the

transmission case front cover fitting faces. 

5)  Use a pair of snap ring pliers to install the snap ring to the

ball bearing. 

 

 

 

 

 

6.  Front Cover with Oil Seal 

1) Clean and apply recommended liquid gasket or its 

equivalent to the through bolt threads. 

2)  Install the new gasket and tighten the new cover bolt to the

specified torque. 

Front Cover Bolt Torque 

N

⋅m(kgf⋅m/lb⋅ft)

25 (2.5 / 18) 

 

 

    

   

 

RTW47BSH000101 

 

10. Shift  Fork 

 

Apply molybdenum disulfide type grease to the areas as 

shown in the figure and install shift fork (Diesel engine). 

 
 

7B-42  MSG MODEL 

SPECIAL SERVICE TOOL 

ILLUSTRATION 

PART NO. 

PART NAME 

 

 

9-8529-2201-0 

Spring pin remover 

 

5-8840-0013-0 

(J-22888) 

Gear remover 

 

5-8840-2001-0 

(J-29768) 

Holding fixture 

 

 

5-8840-0353-0 

(J-36629) 

Lock nut wrench 

 

5-8840-0015-0 

(J-22912-01) 

Bearing remover/installer 

 

5-8840-0026-0 

(J-26540) 

Oil seal installer 

 

 

5-8522-0050-0 

(J-29769) 

Oil seal installer 

 

 

5-8840-0178-0 

(J-33851) 

Collar installer 

 

MANUAL TRANSMISSION     7B1-1 

SECTION 7B1 

MANUAL TRANSMISSION  

(MUA) 

TABLE OF CONTENTS 

PAGE 

MUA5G/5H/5S (4

××××2)  

Service Precaution  .........................................................................................................   7B1 –  3 

General Description ........................................................................................................   7B1 –  4 

Rear Oil Seal  ...................................................................................................................  7B1 –  5 

Transmission (4

××××2) .........................................................................................................  7B1 – 7 

Disassembled View.....................................................................................................   7B1 –  7 

Removal .......................................................................................................................   7B1 –  8 

Installation ...................................................................................................................  7B1 –11 

Transmission Case..........................................................................................................   7B1 –16 

Major Component........................................................................................................   7B1 –16 

Disassembly ................................................................................................................  7B1 –17 

Reassembly .................................................................................................................  7B1 –17 

Intermediate Plate with Gear Assembly, Detent, Shift Arm, Shift Rod,  

  and Interlock Pin  ...........................................................................................................   7B1 –20 

Disassembled View.....................................................................................................   7B1 –20 

Disassembly ................................................................................................................  7B1 –21 

Inspection and Repair.................................................................................................   7B1 –22 

Reassembly .................................................................................................................  7B1 –23 

Reverse Gear and 5th Gear ............................................................................................   7B1 –24 

Disassembled View.....................................................................................................   7B1 –24 

Disassembly ................................................................................................................  7B1 –26 

Inspection and Repair.................................................................................................   7B1 –28 

Reassembly .................................................................................................................  7B1 –28 

Top Gear Shaft, Main Gear Shaft, and Counter Gear Shaft .........................................   7B1 –34 

Disassembled View.....................................................................................................   7B1 –34 

Disassembly ................................................................................................................  7B1 –36 

Inspection and Repair.................................................................................................   7B1 –38 

Reassembly .................................................................................................................  7B1 –41 

Main Data and Specifications .........................................................................................   7B1 –47