DS 19 OPERATION No. DS 330-3 Overhauling a gearbox. Op. DS 330-3 210
TOOLS
41 On cars produced before January 1957. put on the mainshaft (22), the circlip, the distance piece and the oil seals
in the bearings.
42 On cars produced since January 1957. fit the distance tube (15).
a) Measure the distance “a” between the joint face on the gearbox of the clutch bellhousing and the rear end of the
distance tube (is).
b) Measure the distance “a” between the joint face on the clutch bellhousing of the gearbox and the bearing face of
the oil seal (13) on the hub of the thrust race support (74).
c) Take the difference between the two above dimensions and select from those sold by our Spare Parts
Department a shim (14) of appropriate thickness in order to bring this difference to 16.2 + 1 mm. Fit the oil
seal (13).
0
43 To fit and adjust the differential (see Pl. 59 and Pl. 60)
a) Put the crown wheel and differential housing assembly, together with its bearings in the clutch bellhousing.
Connect the clutch bellhousing to the gearbox. Smear the face of the joint with Hermetic fluid or linseed oil.
Tighten the screws and nuts.
b) To fit the differential shaft and bearing housing, right-hand side.
Place against the outer bearing race of the differential, a distance piece 3. 3 mm thick and an adjusting
washer 3.2 mm thick, in order to obtain a thickness of 6. 5 mm.
Offer up the shaft and bearing housing assembly, insert a paper joint.
Tighten the screws (3) fixing the bearing on the box. Make sure that the crown wheel is not binding on the
bevel pinion.
c) Remove the gearbox from the stand and let it rest vertically on the clutch bellhousing face.
d) Put the dial gauge support 1766-T, together with the dial gauge 2437-T, fitted with the extension 2438-T on
the left-hand housing (see Pl. 60, fig. 2}.
In order to carry out this operation, it is necessary for the pressure plate (A) to be totally enclosed in the
recess in the support base (B) and the dial gauge should indicate about 10 mm when the extension is in contact
with the bearing face (p) of the housing (91).
Hold the fixture by hand. Set the dial at “0” and mark the position of the needles . . . . . . . . . . . . . . . . . . . . . . . Support 1766-T
Dial gauge 2437-T
e) To fit the fixture on the gearbox (see Pl. 60, fig. 1). Tighten the adjusting screw (C) in order to move the
Extension 2438-T
pressure plate (A) forward. Do not alter the setting of the dial gauge. Offer up the fixture on the box. Insert a
paper joint. Locate the pin in the splines of the planet wheel.
Fix the fixture. Tighten the adjusting screw (C) to 72 ft/lbs (10 m. kg) and then unscrew it 1/3rd of a turn.
Tighten the locking screw (D).
Pull on the dial gauge spindle in order to put the needles in the position taken in paragraph “d”. Release the
spindle of the dial gauge slowly and count the turns and fractions of turns.
For example : a distance of 8.20 mm.
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