VE-TYPE INJECTION PUMP — Testing of Injection Pump (Cont'd)

EF & EC-689prose procedure

Testing of Injection Pump (Cont'd)

7
Run in fuel injection pump by rotating it at 1,000 rpm for ten minutes.
If fuel leakage, fuel injection failure or unusual noise is noticed, immediately halt pump tester operation and check fuel injection pump for abnormalities.

Before adjustment, fully loosen cold start device adjusting screw.

1
Set control lever at "full-load" by pulling spring or using a suitable equipment.
Set maximum speed adjusting screw in position shown, by turning counterclockwise. Refer to step 6-(2) in PREPARATION.
SEF852A
2
Furnish voltage of 12 volts to activate fuel cut solenoid valve.
3
Rotate fuel injection pump at specified rpm, and measure amount of fuel injection.
Refer to S.D.S. for full-load fuel injection quantity of adjustment value on fuel injection tester.
4
Calculate allowable imbalance of fuel injection quantity.
Allowable imbalance = (Max. or Min. injection volume among delivery valves) - (Mean injection volume of all delivery valves)
5
If the value of allowable imbalance is out of specification, change delivery valve assembly.
Turn adjusting screw clockwise to increase fuel injection.

Measure feed pump pressure at specified fuel injection pump rpm.

a
When measured pressure is lower than specifications.
Push in plug that is driven into regulating valve body.
Be careful not to push plug in too far.
SEF853A