2007 ISUZU KB P190 Workshop Repair Manual

Page 873 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6A – 68  ENGINE MECHANICAL 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 ROCKER ARM SHAFT AND ROCKER ARM 
Rocker Arm Shaft Run-Out  
1.  Place the rocker arm shaft on a V-block.

Page 874 of 6020

ISUZU KB P190 2007  Workshop Repair Manual ENGINE MECHANICAL   6A – 69 
   3.  Check that the rocker arm oil port is free of obstructions. If necessary, use compressed air to clean the rocker arm  
oil port. 
 
 
  
 
 Rocker Arm Correction

Page 875 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6A – 70  ENGINE MECHANICAL 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Cylinder Liner Bore Measurement 
Use a cylinder indicator to measure the cylinder bore at  
measuring point (1) in the thrust

Page 876 of 6020

ISUZU KB P190 2007  Workshop Repair Manual ENGINE MECHANICAL   6A – 71 
 
   
 
 
 
 
 
 
 
 
 
 Cylinder Liner Grade Selection 
Subtract the average cylinder body bore from the average  
cylinder liner outside diameter to obtain the fitting

Page 877 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6A – 72  ENGINE MECHANICAL 
   
 
 012RY00022   
A mark was stamped on the upper side of the cylinder block  
during production to indicate the correct liner.  
The liner grade (i.e.1.2.3.4) is indi

Page 878 of 6020

ISUZU KB P190 2007  Workshop Repair Manual ENGINE MECHANICAL   6A – 73 
 
 
  
 
 
 
Cylinder Liner Installation 
1.  Cylinder Liner Installation Using The Special Tool 
1.  Use new kerosene or diesel oil to thoroughly clean the  cylinder li

Page 879 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6A – 74  ENGINE MECHANICAL 
   
 
 
 
 
 
 
 
 
 
 Piston Grade Selection 
Measure the cylinder liner bore after installing the cylinder liner.  
Then select the appropriate piston grade for the ins

Page 880 of 6020

ISUZU KB P190 2007  Workshop Repair Manual ENGINE MECHANICAL   6A – 75 
 
 
   
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
2.  Measure the piston diameter.  
   
Piston Measuring Point  mm (in)
4JA1T(L)