Triumph TR6 PI Operation Manual page 166

FUEL PUMP
- Overhaul 19.45.15
FUEL SYSTEM - PI
Dismantling
1. Remove the inlet connection and the outlet
connection. Withdraw the strainer from the inlet
connection.
2.
Slacken six bolts equally and remove the gear pump
assembly.
3. Remove the drive coupling.
4. Remove two through bolts.
5. Carefully withdraw the cover and armature about 0·5
in (12 mm). The brushes will drop clear of the
commutator. Push each brush back to clear the circlip
and thrust washer. Complete the withdrawal of the
cover and armature.
6. Remove the thrust washer.
7. Pull the armature from the cover against the action of
the permanent magnet.
8. If necessary' remove the circlip.
9.
Remove the brush assembly. Release the wires by
carefully manoeuvring the rubber grommet upwards
through the hole.
10.
If necessary force the shaft seal from the base casting.
Do not perform this operation unless a new shaft seal
is available.
Bearings
II. The two self aligning motor bearings are not
replaceable.
Brushes
12. Clean the brushes with a petrol moistened cloth.
Ensure that the brushes move freely in the
brushplate.
13. Check the brush length. Renew the brushplate
assembly if less than 0·188 in (4'76 mm).
14. Using a suitable push type spring scale check the
brush spring pressure. The pressure should be 5 to 7
oz (140 to 200 g) when compressed to 0·158 in (4
mm). If the pressure is low renew the brushplate
assembly.
Commutator
IS. Clean the commutator with a petrol moistened cloth.
If the unit is in good condition it will be smooth and
free from pits or burned spots. If necessary polish
with fine glass paper. If excessively worn replace the
armature.
Continued
Triumph TR6 Manual. Pan No. 545277 Issue I
4 - - - -
1----5
19.45.15 P.I. Sheet I