Triumph TR6 PI Operation Manual page 164

FUEL SYSTEM - PI
I. Later vehicles fitted with fuel pump inertia cut out
switch only -
Open the bonnet. Locate the switch mounted in a
clip attached to the bulkhead. Ensure that the button
is depressed so that the switch is in its normal
operating condition, with the contacts closed.
2. Obtain access to the fuel pump as follows:
Open the luggage boot lid. Remove the floor carpet.
Remove the spare wheel cover panel. Remove two
screws and washers and turn back the trim panel as
shown.
3. Check that the fuel pump runs as follows:
Switch on the ignition. Check that the pump is
running audibly or by touch.
4. Check electrical supply and earth as follows:
Disconnect two snap connectors. Switch on the
ignition. Use a voltmeter to check that a supply of 12
volts exists between the white wire and a good
electrical earth. Use a suitable test circuit to check
that the black wire is providing a good electrical
earth. Connect two snap connectors observing
polarity to ensure that the pump motor runs in the
correct direction.
5. Check the running current as follows:
Disconnect the white wire snap connector. Restore
the circuit with an ammeter included in the white
supply wire. Switch on the ignition. Check that the
pump is running with the ammeter reading 3'5 to 5·0
amp. If the ammeter reading is not within this range
the indication is that the pump requires overhaul or
replacement.
6. Check the pressure output as follows:
Open the bonnet. Prepare for fuel spillage. Insert a PI
pressure test adaptor Churchill tool No. S351 in the
fuel line as shown. Connect a pressure gauge Churchill
tool No. CBW IB to the adaptor. Switch on the
ignition. The pressure gauge reading should now be
100 to 110 Ib/in
2
(690 to 760 kN/m
2
).
If the
pressure gauge reading is low the indication is that the
pump requires overhaul or replacement or a fault
exists in the fuel line - refer to 19.00.01. If the
pressure gauge reading is high the indication is that
the pump is serviceable but a fault exists in the fuel
line - refer to 19.00.01.
FUEL PUMP
- Test on vehicle
Service tools: S35 I, CBW I B
19.45.01
NT0641
Triumph TR6 Manual. Pan No. 545277 Issue 1
NTO 645
19.45.01 P.l.