DS 19 OPERATION No. DS 330-3 : Overhauling a gearbox. Op. DS 330-3 205
TOOLS
f) (Cars produced since October 1957, see Pl. 52.) To adjust the clearance of the front bearing.
Fit a paper joint and tighten the cap (7) on the housing, in order to compress the joint. Remove the cap.
Fit a straight edge with a dial gauge (dial gauge 2437-T, straight edge MR-3377, see Pl. 56, fig. 2).
Place this assembly on a surface plate. Push the dial gauge point in approximately 7 mm and set the dial gauge
face of the large needle at “0”. Mark the position of the totalising needle.
Example : between 7 and 8.
With the joint in position on the cap, place the straight edge with the dial gauge on the joint, the point of the
dial gauge in contact with the face which rests against the bearing.
Bring the needles of the dial gauge to the position they occupied previously (large needle at “0” and totalising
needle between 7 and 8) by pulling on the spindle of the dial gauge.
Release the spindle of the dial gauge slowly, counting the number of turns and fractions of turns described by
the large needle, until the point of the dial gauge spindle rests on the thrust face of the bearing. Example : the
large needle has turned 5.63 turns.
With a micrometer, measure the thickness of the shoulder of the bearing, for example: 5.48 mm. Subtract this
thickness from the dimension found previously. The difference between these two dimensions represents the
thickness of the shims to be placed between the cap and the bearing.
In the example chosen : 5.63 - 5.48 = 0.15 mm.
Do not mix the shims thus determined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dial gauge 2437-T
Straight edge MR-3377
29 To adjust the bevel pinion shaft (see Op. 53, fig. 2):
a) Put the driving pins (46) in position in the 2nd speed intermediate pinion (44).
b) Put the 2nd speed intermediate pinion (44) on the bevel pinion (25). Offer up the 3rd and 4th speed intermediate
pinion (45) and fit as far as possible on the driving pins (use a press, if necessary). Use a tube . . . . . . . . . . . Tube :
Inside dia. = 26
IMPORTANT REMARK - During this operation, check for the formation of any burrs on the driving pins
Length = 50
and that the pinion assemblies slide freely on the shaft in several positions. If, on removal of the bevel pinion
the circlip (84) retaining the rollers of the bearing (26) has come out of the groove in the shaft and made a
groove on the journals of the 1st speed sliding pinion (85), it is necessary to remove the burrs with abrasive
paper, or a stone. In effect, the journals should be perfectly smooth.
Refit the bearing (26) in the following manner
Put the rollers in the outer cup of the bearing.
The bevel pinion should be maintained in a vertical position while fitting the outer cup and roller assembly.
Put the roller retaining clip (84) in position. Use circlip pliers in order not to scratch the journals of the 1st
speed loose pinion (85).
NOTE - The bevel pinions supplied by our Spare Parts Department are sold with the bearing fitted . . . . . . . . . . . Segment pliers
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