DS 19 OPERATION No. DS 231-3 : Overhauling a water pump and low pressure pump.. Op. DS 231-3 148
TOOLS
PARTICULAR POINTS
Dismantling.
7 In order to make sure of perfect sealing after a complete pump overhaul, it is necessary to lap the thrust washers and the thrust face of the
joint. In order to avoid impregnating the porous bronze bush, it must be removed.
Proceed with great care during this operation.
Assembly.
12 Do not refit the greaser, seal the hole by means of a screw.
16 Fit the bearing by means of a press. Support it by the end of the shaft and not by the impeller or the body of the pump.
17 Tighten the bearing nut to 22 ft/lb. (3 m.kg) and split pin.
18 Tighten the screws fixing the pump to the body to 12 to J3-~ ft/lb (1 7 to 1 9 m.kg). Turn the shaft during the tightening of the screws.
Checking for leakage (see Pl. 40).
The pump should be immersed in hydraulic fluid and the sealing checked under a compressed air pressure of 14 psi. (1 kg/cm
2
).
TOOLS
OVERHAULING A PUMP (on cars produced before December 1957).
Dismantling (see Pl. 37).
1 Fix the pump on a stand (stand MR-3676-180, fitted with the dowel pin (A) see Pl. 41, fig. 1) . . . . . . . . . . . . . . Stand MR-3676-180
2 Remove the pulley fixing nut, remove the distance washer (2), the pulley, its key (1) and the adjusting washers (3). 16 mm box spanner
3 Disengage from the groove, the metal locking the nut (5), remove the nut (5) retaining the ball bearing
(spanner 1634-T, see Pl. 41, fig. 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spanner 1634—T
4 Remove the ball bearing (6) (extractor 1684-T, see Pl. 41, fig. 3).
Remove the steel cup (7), the half retaining rings (8) and the spring (9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Extractor 1684-T
5 Remove the pump body fixing screws. Remove the pump body (10). Remove the thrust washer (11),
the seal ring (12) and the cup (13) from the body of the pump. Remove the pump pinions (14) and (15)
from the pump and the key (16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm box spanner
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