DS 19 OPERATION No. DS 231-1: Replacement of a water pump and low pressure pump. Op. DS 231-1 147
TOOLS
ASSEMBLY (see Pl. 37).
9 To position the pulley on the new pump
a) Place the old pump on a surface plate and measure the distance “d” between the bearing face “a” on the cover
and the boss face “b” of the pulley receiving the fan.
b) Fit the pulley on the new pump and carry out the same procedure as above.
c) Fit the distance washer (3) under the pulley, in order to obtain a dimension “d” equal to that obtained in line a).
d) Carry out the new assembly of the pulley by fitting the key (1), the plain washer (2) and the lockwasher. Tighten
the nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 mm box spanner
10 Smear the face of the cover (4) and the pump with Hermetic. Stick the joint on the cover.
11 Offer up the pump. Tighten the nuts and fixing screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm box spanner
12 Connect the feed and return pipe unions to the low pressure pump (spanner 2220-T, see Pl. 72, fig. 4) . . . . . . . Spanner 2220-T
13 Put the belts in position. Connect the dynamo and high pressure pump adjusting rods to the water pump (spring
washers). Adjust the tension of the belts (see Op. DS 231-0).
14 Fit the fan. Tighten the nuts to 7.2 ft/lbs (1 m.kg) maximum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm box spanner
15 Fit the radiator tie-bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12 mm box spanners
16 Connect the water pump feed pipe. Refill the radiator with water. Open the heater control vane and bleed the system.
17 Start the engine. Check the clutch drag and adjust if necessary (see Op. DS 314-0).
Check that the heater pipe to the carburettor is hot.
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