2007 ISUZU KB P190 Workshop Repair Manual

Page 993 of 6020

ISUZU KB P190 2007  Workshop Repair Manual FUEL SYSTEM    6C – 29 
 5.  Install the pins in the spacer.  
6.  Install the nozzle on the spacer. 
 
  
 
 7.  Hand-tighten the adjustment retaining nut together  with the gasket to the nozzle ho

Page 994 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6C – 30   FUEL SYSTEM 
•  First nozzle opening pressure adjusting shims 
Parts No. (ISUZU)  Thickness (mm) 
115349-0420 0.40 
115349-0430 0.50 
115349-0440 0.52 
115349-0450 0.54 
115349-0460 0.56

Page 995 of 6020

ISUZU KB P190 2007  Workshop Repair Manual FUEL SYSTEM    6C – 31 
  
  
 
 
 4.  Install the pin to the dial gauge.  
  Note: 
  The lengths of the pins do not include the  threaded portions.  
  Pin (L=100 mm):  157892-5200 (Bosch AS)

Page 996 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6C – 32   FUEL SYSTEM 
 
 8.  Operate the nozzle tester and increase the in-line 
pressure to 34.3 - 44.1 MPa (350 - 450 kg/cm2) so that 
the nozzle’s needle valve moves through its full lift.

Page 997 of 6020

ISUZU KB P190 2007  Workshop Repair Manual FUEL SYSTEM    6C – 33 
 
 2.  Read the needle valve “pre-lift” point from the dial gauge indication (once the needle valve has  
descended when the second spring has stopped 
operating). 
Pre-l

Page 998 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6C – 34   FUEL SYSTEM 
 2.  Release the nozzle tester handle so that in-line 
pressure decreases. 
  Note: 
  The in-line pressure will decrease and needle  
valve lift (as indicated on the dial gau

Page 999 of 6020

ISUZU KB P190 2007  Workshop Repair Manual FUEL SYSTEM    6C – 35 
 
 
Second nozzle opening pressure adjustment  
If the second nozzle opening pressure is not as specified,  
disassemble the nozzle from the nozzle holder and 
replace the sh

Page 1000 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6C – 36   FUEL SYSTEM 
 4.  Set the nozzle holder to the nozzle tester and check 
first nozzle opening pressure, spray condition, seat oil  
tightness and each part for oil leaks. 
5.  W hen replaci