B3.9 and B5.9 Series Engines
Fuel Injection Pump, In-Line, Spill Port Timing (005-013)
Section 5 - Fuel System - Group 05
Gear Puller, Part No. 3824469
With the fuel injection pump positioned at the correct
plunger lift setting, use the gear puller, Part No. 3824469,
or equivalent, to pull the injection pump gear off the taper
of the injection pump input shaft. Remove the gear puller.
Rotate the crankshaft 20 degrees to 30 degrees opposite
the direction of normal crankshaft rotation; then rotate the
crankshaft back in the direction of normal crankshaft ro-
tation to TDC. This step removes the backlash from the
lower gear train.
QD Contact Cleaner, Part No. 3824510
Clean the fuel injection pump shaft and gear tapers with a
residue-free cleaner (Cummins Part No. 3824510, or equiva-
lent) by spraying into the gap between the shaft and gear.
Dry the taper surfaces with compressed air. Failure to clean
and dry the shaft and gear tapers thoroughly can result in
a timing shift to the retarded side after the engine is started
and run under load. This will result in low power, smoke,
and rough running.