Perkins New 1000 Series, Workshop Manual, Page: 210 / 290

20
210 Workshop Manual, TPD 1350, issue 3
New 1000 Series
Stanadyne fuel injection pump
To remove to fit 20-13
Special tools:
Timing pin PD.246, Stanadyne fuel injection pumps
General description
Caution: Do not release the nut (A2) from the fuel
injection pump. Illustration (A) shows the nut in
position when the fuel pump is fitted to the engine.
The fuel pump hub is fitted to the shaft in the factory
to ensure that the fuel pump is in the correct position
for timing. If the nut is removed and the hub moves,
the hub will need to be accurately fitted to the pump
by use of specialist equipment before the pump can
be fitted to the engine.
The manufacturer fits the hub (B3) to the pump to
ensure very accurate timing. Engines that have this
arrangement have the drive gear fastened to the hub
instead of to the shaft of the pump.
The hub (B3) is permanently mounted onto drive shaft
by the pump manufacturer to allow the pump timing to
be set accurately when the engine is in service.
To prevent incorrect adjustments to the engine timing
by rotation of the fuel pump, the mounting flange has
holes instead of slots.
Accurate timing of the pump to the engine is by a pin
(A1) used to align the fuel pump gear and the the hub
(A4), with a hole in the body (A3) of the fuel pump.
The gear is passed over the pin and fastened to the
hub with four fasteners (A6).
Note: On the latest engines with belt driven coolant
pumps, four tamper proof fasteners retain the fuel
pump gear. Special tools to remove these fasteners
are available at your Perkins distributor.
Fit a new joint (B1) to the timing case. Fit a new "O"
ring (B2) to the fuel pump. DB4 fuel pumps are fitted
with a rubber seal which has a square shape instead
of an "O" ring. When a rubber seal is fitted it is not
necessary to fit a joint.
Continued
A
A0374A
3 4
1
5
6
2
3
2
1
B
A0163
Purchased from www.WorkshopManuals.co.uk