Page 401 of 2492
DRIVESHAFTS
Gaiter on gearbox end
Do not remove the rollers from their respective
journals since the rollers and the needles match
each other and should never be interchanged.
Never use thinners to clean these components.
Depending on the assembly, remove the circlips
29
1 and 3 Retaining clips
2 Rubber gaiter
4 Yoke
5 Spider
6 Metal cover
7 Driveshaft
90387S
GI 62 seal
98823R
REMOVAL
Cut the crimped clip and the gaiter along its
whole length.
Remove as much grease as possible.
75936-1S1
Using pliers, remove each end of the retainer
plate (C), then remove the yoke.
74655R
29-21
Page 402 of 2492
DRIVESHAFTS
Gaiter on gearbox end
Put a shim (B) of thickness 2.5 mm, manufactured
according to the following diagram, between the
retainer plate and the yoke.
29
With a press, extract the triaxe component by
using an extractor tool.
90391S
GI 62 seal
90388S
REFITTING
Lubricate the driveshaft and slide on the new ring
and gaiter.
Refit the triaxe component on the splined shaft.
90389S
Replace the retaining circlips or make three crim-
ping points at 120° by pressing the metal from the
splines onto the driveshaft.
NOTE : the amount of grease, given in the
"Consumables" chapter must be complied with.
74867R1
29-22
Page 403 of 2492
DRIVESHAFTS
Gaiter on gearbox end
Insert a blunt rod with a rounded end between
the gaiter and the shaft in order to expel the air
inside the seal.
Extend or shorten the seal until it reaches a length
ofA = 153 ± 1 mm (dimension between the end
of the gaiter and the machined face of the largest
part of the yoke).
29
With a copper hammer, carefully put the plate in-
to its original position, then remove the shim (B).
90390R
GI 62 seal
74867R
Position the lips of the gaiter in the grooves of the
driveshaft and on the metal cover.
98823R1
88601R
In this position, remove the rod and fit the retai-
ning clip.
Tighten it with tool T. Av. 1034.
29-23
Page 404 of 2492
DRIVESHAFTS
Bearing gaiter
Remove the gaiter and bearing assembly in the
same way as the triaxe component.
29
REMOVAL
Never use thinners to clean these components.
Depending on the assembly, remove the circlips
90388S
GI 69 seal
SPECIAL TOOLING REQUIRED
T.Av. 944 Mandrel for fitting bearing onto
shaft
90387S
With a press, extract the triaxe component by
using a
FACOM U53T type extractor tool.
85933S
29-24
Page 405 of 2492
DRIVESHAFTS
Bearing gaiter
29
REFITTING
To be in the correct position on the shaft, the bea-
ring must be fitted so as to obtain a dimension L
between the front part of the bearing and the
end of the shaft.
L = 118 ± 0.2 mm (JB1 gearbox)
L = 123.2 ± 0.2 mm (JB3 gearbox)
This dimension is obtained using tool T.Av. 944
when its end is level with the shaft.
86197S
GI 69 seal
85884-1R1
To avoid damaging the bearing which contains a
lip seal, therefore to avoid the risk of leaks, do
not fit the bearing using a hammer but instead
use a press which provides progressive pressure.
29-25
Page 406 of 2492
DRIVESHAFTS
Bearing gaiter
29
86198R
GI 69 seal
In addition, the driveshaft is held in place on the
press by channel (G) with a
FACOM U53Ttype
tool to avoid damaging the seal on the wheel
side.
Fit the triaxe component onto the splined shaft
and refit the retaining circlips (depending on as-
sembly).
29-26
Page 407 of 2492
30
GENERAL
General diagram of braking circuits
Page 408 of 2492
30
GENERAL
Tightening torques (in daN.m)FRONT
AXLE