FUEL SYSTEM - N.6
Fig. N.9.
Timing Marks on Fuel Pump Flange and Timing Case.
7.
Remove the three nuts, spring washers and
plain washers from the fuel pump securing
studs. Withdraw the fuel pump from the timing
case ensuring that when the fuel pump gear
leaves the fuel pump shaft it stays in mesh with
the idler gear otherwise the fuel pump timing will
be affected.
To Refit the Fuel Pump
1.
Offer up the fuel pump together with a new joint
ensuring that the slot in the pump hub is aligned
with the dowel in the fuel pump gear.
2.
Position the pump so that the scribed line on the
pump flange and the mark on the timing case
are in alignment (see Fig. N.9). To check
accuracy of scribed line on rear of timing case,
this may be ascertained in accordance with the
instructions for marking a new timing case as
given on Page K.4. Fit the plain washers, spring
washers and secure the pump to the timing case
with the three nuts.
3.
Secure the pump driving gear and tachometer
drive adaptor to the fuel pump shaft with the
three setscrews and spring washers, ensuring
the dowel is properly located in its slot.
4.
Using a new joint fit the fuel pump gear cover
plate complete with tachometer drive assembly.
5.
Refit the heat exchanger mounting bracket and
secure with the setscrews and nuts.
6.
Refit the low pressure pipes to the fuel pump
inlet and outlet connections.
7.
Refit the high pressure injection pipes between
the atomisers and fuel pump.
8.
Re-connect the throttle and stop lever controls
and securely attach their respective return
springs in position.
9.
Vent the air from the fuel system as detailed on
Page N.14.
10.
Adjust the maximum speed and idling speed as
detailed on Page N.8.
11.
If the fuel pump timing is suspected of being
inaccurate it should be checked and reset as
follows:—
To Check Marking Angle of Fuel Injection Pump
using Tool MS67B
1.
Release screw (5, Fig. N.10) and position
splined shaft with the small splined diameter to
the rear to locate in the fuel pump drive shaft.
2.
Ensure that the slotted pointer (2) is positioned
with slot to rear of tool and chamfered sides of
slot outwards. At this stage, slotted end of
pointer should be kept well back towards the
body of tool. Ensure that the flat in the washer
fitted behind the pointer locating screw (3) is
located over the side of pointer.
3.
Release bracket screw (4) and set bracket so
that the chamfered edge is in line with the
relevant marking angle (see Page B.11).
4.
Position timing tool, locating splined shaft in hub
and slide tool towards pump to rest on end of
hub and lock shaft in tool.
Fig. N.10.
Fuel Pump Timing Tool MS67B.
