DS 19 OPERATION No. DS 231-0 : Adjustments of pulleys and belts. Op. DS 231-0 145
TOOLS
5 Remove the pulley being adjusted. Remove the adjusting washer, measure its thickness and select a washer of
suitable thickness from among those sold by our Spare Parts Department.
6 Fit the washer and the pulley.
Check the alignment (see paragraphs 3 or 4, above).
7 Remove the gauge pin bracket (B).
ADJUSTMENT OF THE BELT TENSION (see Pl. 35).
8 Tensioning the high pressure pump belt or belts
a) Unscrew the nut fixing the tie-rod to the pump. Slightly unscrew the pump bearing spindle nut (spanner 2280-T,
see Pl. 72, fig. 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm box spanner
Spanner 2280-T
b) Tension the belts, using a lever (lever MR-4208, see fig. 2) resting on the clutch cylinder with one end and
on the body of the pump with the other part. Exert a pull of l6 lbs (7.5 kg) on the end of the lever (spring
balance 2472-T), which corresponds to a tension of 22 ft/lbs (3 m.kg) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lever MR-4208
Spring balance 2472-T
c) With the belts under tension, tighten the pump bearing spindle nut (spanner 2280-T, see Pl. 72, fig. 5), and
tighten the nut fixing the tie-rod to the pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm box spanner
Spanner 2280-T
9 Tensioning the water pump and dynamo belts
a) Unscrew the nut fixing the dynamo to its tie-rod. Slightly unscrew the screw fixing the dynamo to the clutch
housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm box spanner
14 mm spanner
14 mm ring spanner
b) Tension the belts, using a lever (lever MR-4208, see fig. 2), resting on the boss between the two dynamo fixing
plates, with one end and on the body of the dynamo with the other part. Exert a pull of 22 lbs (10 kg) on the end
of the lever (spring balance 2472-T) which corresponds to a tension of 28 ft/lbs (4 m.kg) . . . . . . . . . . . . . . . . Lever MR-4208
Spring balance 2472-T
c) With the belts under tension, tighten the screw fixing the dynamo and tighten the nut fixing the dynamo to its 12 mm box spanner
tie-rod 14 mm spanner
14 mm ring spanner
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