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FUEL SYSTEM - PI
FUEL PUMP
Data
and description
19.45.00
CAUTION: The fuel pump is controlled directly by the ignition/starter switch. The motor will therefore run continually
while the ignition is on. If, during servicing, the ignition has to remain on for a long period with the engine not running
isolate the unit as follows:
Early vehicles not fitted with fuel pump inertia cut out switch only-
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 Disconnect the white wire snap connector to isolate the unit.
Later vehicles fitted with fuel pump inertia cut om switch only -
Open the bonnet. Locate the switch mounted in a clip attached to the bulkhead. Pull up the button to trip the switch
and isolate the fuel pump.
Data
Manufacturer
Lucas part No.
Stanpart No.
Running current
light running - speed
current
volts
Armature winding resistance -
adjacent commutator bars
Armature end float
Brush length - new
renew if less than
Brush spring pressure - when compressed
to 0·158 in (4 mm)
Maximum delivery
Delivery pressure - controlled by
pressure relief valve unit
The fuel pump consists of a permanent magnet electric
motor driving a precision built twin gear pump. The drive is
transmitted by a drive coupling which features a spiral
formed on its upper surface to throw fuel up to lubricate
the shaft seal. Failure of the shaft seal would be indicated
by fuel leakage from the 'tell tail' pipe projecting from the
base casting which is fitted with a drain pipe.
19.45.00 P.1.
Lucas
54073012
214347
4 amp approximately
2200 rev/min
1·4 amp
13·5 volt
0'16 to 0·24 ohm at 15 degrees C
0·004 to 0-010 in (0·10 to 0·25 mm)
0'375 in (9·53 mm)
0·188 in (4·76 mm)
5 to 7 oz (140 to 200 g)
16 gal (73 litres) per hour
100 to 110 Ibf/in
2
(690 to 760 kN/m
2
)
I.
Supply connection
2.
Brushes
3.
Commutator
4.
Earth connection
5.
Permanent magnets
Component witing diagram
Triumph TR6 Manual. Part No. 545277 Issue 1
4
J11l
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