DS 19 OPERATION No. DS 314-1 Work on the clutch controls. Op. DS 314-1 176
TOOLS
11 Connect the pressure feed pipe to the clutch cylinder (spanner 2219-T or 2221-T, see Pl. 72, fig. 4). The pipe
must be fitted without any strain, set it if necessary. Spanner 2219-T or
2221-T
12 Fit the driving belt on the pump pulley and connect the tie-rod to the pump. Tension the belt or belts moderately
(see Op. DS 231-0) and lock the nut. Tighten the pump spindle fixing nut (spanner 2280-T, see Pl. 72, fig. 5). 12 mm box spanner
Spanner 2280-T
13 Put the system under pressure, check the unions for leaks. Bleed the hydraulic gear selector unit.
14 Adjust the clutch clearance (see Op. DS 314-0).
REPLACEMENT OF A CLUTCH CYLINDER JOINT
Dismantling (see Pl. 48, fig. 1).
15 Remove the dust cover and control rod assembly from the cylinder. Remove the control rod from the dust cover.
16 Using circlip pliers, remove the circlip (1) retaining the piston (2) from the cylinder.
17 Wrap the cylinder and piston assembly in a cloth and blow out the piston with compressed air. Remove the ring
seal (3) using a small brass wire hook. (Do not use steel wire, in order to avoid scratches on the cylinder or
damage to the sides of the groove).
18 Clean the parts thoroughly using alcohol only to the exclusion of all other products. Blow with compressed air.
Assembly (see Pl. 48, fig. 1).
19 Insert the mandrel MR-3045-60 (see Pl. 48, fig. 2 and 3) in the cylinder, moisten the joint with hydraulic fluid.
Offer up the joint in the bore of the cylinder. Obtain the positioning of the joint by pushing with the piston.
Remove the piston. Remove the mandrel using a screw. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mandrel MR-3045-60
Screw 6 dia. x 100 pitch
Length = 60
20 Oil the bore of the cylinder and the piston with hydraulic fluid. Insert the piston (2) and push it to the bottom of
the cylinder. Put the circlip (1) retaining the piston in the groove of the cylinder . . . . . . . . . . . . . . . . . . . . . . . Circlip pliers.
21 Check the cylinder for leaks (see Op. DS 314-3).
22 Put the cylinder dust cover on the control rod and put the dust cover and control rod assembly on the cylinder.
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