TM 5-2420-230-24-2
Section 6 - Injectors - Group 06
Fuel Transfer Pump - General Information
B Series Shop Manual
Page 6-5
Fuel Transfer Pump - General Information
Fuel Transfer Pump - Identification
The B series engine uses three different piston style, and one diaphragm style, transfer pumps. The diaphragm
style transfer pump cannot be rebuilt.
Piston style transfer pump, Part No. 3918076, is offered
as an option on B series engines equipped with distrib-
utor type fuel injection pumps.
NOTE: Part No. 3918076 and 3918000 are identical in ap-
pearance. The pumping spring free length can be measured
to identify the pump.
Fuel transfer pump 3918076 spring free length 53.5 mm
[2 7/64 in].
Piston style transfer pump, Part No. 3918000, is used on
the 300 HP marine B series engine.
NOTE: Part No. 3918076 and 3918000 are identical in ap-
pearance. The pumping spring free length can be measured
to identify the pump.
Fuel transfer pump 3918000 spring free length 58 mm [2
9/32 in].
Piston style transfer pump, Part No. 3917334 and
3921550, is used on the 91 B series engine equipped with
the Bosch P7100 in-line injection pumps.
L-359