DS 19 OPERATION No. DS 142-4 : Work on the carburettor controls. Op. DS 142-4 112
TOOLS
Removal (cars produced since January 1959).
NOTE – On these cars, it is possible to replace the accelerated idling control without replacing the pipe.
17 Release the pressure in the front brake system (spanner 2141-T, see Pl. 143, fig. 4) . . . . . . . . . . . . . . . . . . . . . . . . Spanner 2141-T
18 Disconnect the connecting pipe between the left-hand brake unit and the accelerated idling control from the
accelerated idling control (spanner 2219-T or 2221-T, see Pl. 72, fig.. 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spanner 2219-T or
Spanner 2221-T
19 Remove the screw fixing the accelerated idling control on its steel support and remove the accelerated idling
control. Do not mislay the washers fitted between the support and the carburettor . . . . . . . . . . . . . . . . . . . . . 8 mm box spanner
Refitting.
NOTE – On the cars produced before January 1959, it is preferable to fit a new type of accelerated idling control.
20 Offer up the new accelerated idling control, inserting the washers between the carburettor and the support.
Place the assembly in position at the top of the slots. Tighten the fixing screws (plain and spring washers
under the heads of the screws) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 mm ring spanner
21 Connect the feed pipe to the control assembly (car s produced since J anuar y 1959) (spanner 2219-T, see Pl..72, fig.4). Spanner 2219-T
22 To fit the feed pipe (cars produced before January 1959) :
a) Put the rubber guides and fixing plates on the pipe.
b) Offer up the pipe, connect the unions of the control assembly and the left-hand brake unit (spanner 2219-T,
see Pl. 72, fig. 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spanner 2219-T
c) Fix the rear clip fixing the feed pipe to the inlet manifold closing plate (spring washer under the heads of the
screws) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm spanner
d) Fix the front clip fixing the feed pipe to he rear support of the left-hand brake unit.
Insert a lockwasher or place a washer under the head of the fixing screw. Lock the two upper fixing screws
of the brake units, using iron locking wire in such a manner to avoid rotation in the unscrewing direction, or
turn over the lockwashers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 mm box spanner
e) Make sure that the rubber guide for the pipe is in position in fixing the clip on the left-hand brake unit.
23 Start the engine and bleed the brake system. Make sure there are no leaks from the unions.
24 Adjust the slow running (see Op. DS 142-0).
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