Isuzu NHR 4J Series Workshop Manual page 52

00 – 48 SERVICE INFORMATION
7. Rotate the crankshaft to bring the piston in the No. 1
cylinder to a point 30 - 40° BTDC.
8. Set the timing gauge needle to zero.
9. Move the crankshaft pulley slightly in both directions
to check that the gauge indication is stable.
0047-1.tif
10. Turn the crankshaft clockwise and read the gauge
indication when the crankshaft pulley timing mark is
aligned with the pointer.
4JB1TC
0047-2.tif
Standard Reading
If the injection timing is outside the specified range,
continue with the following steps.
11. Loosen the injection pump fixing nuts and bracket
bolts.
12. Adjust the injection pump setting angle.
Gear drive
A : Move the injection pump toward the engine.
B : Move the injection pump away from the engine.
Tighten the pump fixing nut, adjust bolt and pump
0047-3.tif
distributor head plug to the specified torque.
Pump Fixing Bolt
Adjust Bolt
Injection Pump
Distributor Head Plug
CAUTION
•
When installing the distributor head/plug, be sure
to use new copper washer.
4JB1
4JB1T
4JG2
0.5 (0.02)
When large than
standard value
A
24 (2.4/17)
19 (1.9/14)
17 (1.7/12)
mm (in)
BTDC 14°
BTDC 11°
BTDC 4°
ATDC 2°
mm (in)
When smaller than
standard value
B
N∙m (kg∙m/lb∙ft)
N∙m (kg∙m/lb∙ft)
N∙m (kg∙m/lb∙ft)