TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Fuel Pump Timing (005-037)
Section 5 - Fuel System - Group 05
Page 5-61
In-Line Pump
Install the tail support bracket finger-tight before final tight-
ening.
NOTE: Tighten bracket to block before tightening the
bracket to the pump.
10 mm
Tighten bracket to the block (1) first; then to the injection
pump (2).
Torque Value: 24 Nm
[18 ft-lb]
Fuel Pump Timing (005-037)
General Information
Pump-to-engine timing is extremely critical. Pump timing
that is off by only a few crankshaft degrees will cause:
1. Poor performance - starting and power.
2. Excessive smoke and emissions.
3. Poor fuel economy.
Time (005-037-051)
Engine pump timing begins with the timing of the fuel
injection pump drive gear to the camshaft gear.
The first step is the location of TDC of the compression
stroke for cylinder No. 1.
Then, depending on the engine configuration, a letter on
the gear will, possibly, need to be aligned with the mark on
the camshaft gear.
L-921