TM 5-2420-230-24-2
Fuel Shutoff Valve (005-043)
B3.9 and B5.9 Series Engines
Page 5-68
Section 5 - Fuel System - Group 05
Correct timing of the Lucas CAV DPA and Stanadyne DB4
fuel injection pump can be verified by removing the timing
window cover plate.
The Nippondenso EP-9 and Bosch P-7100 fuel injection
pumps are checked by removing the timing pin access plug
and verifying the slot in the pin will fit over the timing tooth
in the fuel injection pump.
NOTE: Special equipment in an authorized shop is re-
quired to time the Lucas CAV DPA fuel injection pump
precisely. However, for troubleshooting and in an emer-
gency, visual alignment of the timing mark is close enough
for the engine to run.
To correct the timing on the Bosch P-7100 and Nip-
pondenso EP-9, refer to the replacement procedure for the
respective pump.
Two injection pump timing marks are used on the Stanadyne
DB4 for timing injection of fuel into the No. 1 cylinder. One
mark is located on the governor weight retainer hub. The
other is located on the internal cam ring. These two marks
must be aligned at No. 1 cylinder top dead center (TDC).
On the Lucas CAV DPA, the correct timing letter can be
located on the engine dataplate as shown.
The letter G indicated refers to the correct timing letter
alignment as shown in the previous frame.
Fuel Shutoff Valve (005-043)
General Information
Shutdown Solenoid (In-Line-Type Injection Pump)-
Troubleshooting
Engines using the in-line type of injection pumps are
equipped with the synchro-start fuel shutoff solenoid to
actuate the shutoff lever. Both 12-VDC and 24-VDC exter-
nal fuel shutoff solenoids are available.
L-928
