page 35
02.28 FUEL PUMP TIMING
Fuel pump components are manufactured to
exacting limits and care must be taken to ensure they
are returned to their respective pumps if more than
one pump is dismantled at a time.
The fuel pump timing gauge, 317-50518, can be
used to check the timing without the need to dismantle
the pump.
Spill Timing
1. Isolate the fuel supply.
2. Remove the fuel pipe from the pump to the injector.
3. Unscrew the fuel pump delivery union body (A) and
remove it.
4. Lift out the delivery valve spring seat (B) and spring
(C).
Figure 02.28.1 Fuel Pump Components
5. Carefully lift out the delivery valve (D) taking care
not to disturb the valve seat.
6. Place these components in a suitable container of
clean fuel.
7. Replace the delivery union body (A).
8. Fit a suitable spill pipe.
9. Ensure the fuel pump rack is in the run position by
removing a cylinder fuel pump housing door and
manually moving the fuel pump rack towards the
gear end.
10.Turn the flywheel, in the direction of rotation, until
the piston for the cylinder being timed is at 'FP' on
the compression stroke.
At this position both the inlet and exhaust valves
will be closed.
11. Connect the fuel supply and bleed the fuel filter
and pump.
12.Carefully turn the flywheel against rotation until fuel
is flowing from the spill pipe.
13.Turn the flywheel very slowly in the direction of
rotation until the fuel flow from the spill pipe just
stops dripping this is known as the 'Spill Point'.
14.Check the flywheel timing mark.
The flywheel timing mark (FP), which can be seen
through an aperture in the fanshroud, should align
with the arrow on the fanshroud.
15.If the flywheel mark is not correct, see 'Figure
2.28.2', the shims under the fuel pump must be
adjusted, see "Timing Shims"
Section 02
Engine Servicing and Adjustments
- fuel pump spill timing
Figure 2.28.2 Flywheel Timing Marks
If the timing is:
Advanced - Add Shims
Retarded - Remove Shims.
Approximately 1° of flywheel movement can be
obtained with a 0.127mm (0.005in) shim.
16.Re-check the timing.
17.When the correct timing has been obtained remove
the spill pipe and delivery union body.
18.Replace the delivery valve, delivery valve spring and
spring seat.
19.Refit the delivery union body and torque it to 35.0/
45.0Nm (26.0/33.0lbf ft).
20.Check that the fuel pump calibration marks are
still aligned.
21.Repeat this procedure for the remaining fuel pumps.
22.Connect all fuel pipes and torque the pump to
injector pipe nuts to:
TS/TR - 29.0Nm (21.0lbf ft).
TX - 22.0Nm (16.0lbf ft).
23.Bleed the entire fuel system.
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Страница 1: ...TS TR TX Workshop Manual Edition 12 May 2005 Publication P027 08221 ...
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Страница 80: ...page 80 Section 05 Routine Maintenance TS TR wearing parts TS TR Wearing Parts ...
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