Water Separator (Water Sedimentor); Air Bleeding - Isuzu A-4JA1 Workshop Manual

MAINTENANCE
Air bleeding screw
20
2
1
3
080ES004

Water Separator (Water Sedimentor)

(Optional Equipment)
Check the water separator float 1 level.
If the float 1 has reached level 2 , loosen the drain plug
3 (at the bottom side of the water separator) to drain
the water.
Drain Plug Torque
0.9 – 1.5 (6.5 – 10.9/8.8 – 14.7)

Air Bleeding

1. For the engine equipped with in-line type injection
pump
1) Loosen the priming pump cap 1 on the injection
pump.
2) Loosen the fuel return eye bolt 2 on the fuel filter.
3) Operate the priming pump until there are no more
bubbles visible in the fuel being discharged from the
fuel return eye bolt on the fuel filter.
4) Retighten the fuel return eye bolt on the fuel filter.
5) Loosen the bleeder bolt 3 while operating the
injection pump priming pump to check that the air
has been bled completely.
6) Operate the priming pump several times to check for
fuel leakage around the injection pump and the fuel
filter.
2. For the engine equipped with distributor type injec-
tion pump
1) Loosen the bleeder screw on the injection pump
overflow valve.
2) Operate the priming pump until fuel mixed with
foam flows from the bleeder screw.
3) Tighten the bleeder screw.
4) Operate the priming pump several times and check
for fuel leakage.
kgf·m(lb.ft./N·m)