Page 28 of 105
98991
REAR AXLE
Brake drum
Remove:
- the nut and stub axle washer,
- the drum.
The two brake drums must be of the same diameter, if one is reground, the other must also be reground.
Never exceed the diameter marked on the drum.
SPECIAL TOOLING REQUIRED
Emb. 880 Inertia extraction tool
Rou. 943 Hub cover plug extractor
TIGHTENING TORQUES (in daN.m)
Wheel bolts 9
Hub nut 17.5
REMOVAL
Remove the hub plug using tools Rou. 943 +
Emb. 880.
Release the handbrake, slacken the secondary
handbrake cables to allow the lever to move back.
Insert a screwdriver through one of the wheel
mounting holes in the drum and push the hand-
brake lever to release the lug from the brake
shoe( E ).
Help the lever to slacken by pushing it towards
the rear.
33
98990G
33-2
Page 30 of 105
REAR AXLE
Brake cylinder
REFITTING
Remove all dust from the drums and the linings
using brake cleaner.
Refitting is the reverse of removal.
Bleed the braking circuit (see section 38).
Adjust the linings by repeatedly pressing the
brake pedal.
Check the cut-out pressure (see section 37
"Controls").
TIGHTENING TORQUES (in daN.m)
Wheel bolts 9
Hub nut 17.5
Bleed screw 0.5 to 0.8
Pipe bolt 1.7
REMOVAL
Remove:
- the drum (see corresponding section),
- the upper return spring (see paragraph
"Brake linings").
Separate the shoes.
Slacken:
- the rigid pipe union on the wheel cylinder
using a pipe wrench,
- the two cylinder mounting bolts on the
backing plate and remove it.
Check the condition of the shoes. If they have
traces of oil on them, renew them.
33
33-4
Page 31 of 105

Emb. 880 Inertia extraction tool
Rou. 943 Hub cover plug extractor
REAR AXLE
Brake linings (drum)
SPECIAL TOOLING REQUIRED
Wheel bolts 9
Hub nut 17.5
33
TIGHTENING TORQUES (in daN.m)
Composition of RAI brake (Rattrapage Auto-
matique Incrémental - automatic wear take up
system).
ALeading shoe
BTrailing shoe
CFixed point
PBase of brake shoe
FRAI wear take up system
1Upper return spring
2Lower return spring (for base)
3Side retainer
4Handbrake lever return spring
REMOVAL
Brake shoes must be replaced on the complete
axle - never fit shoes of differing makes or
grades.
Remove:
- the brake drum (see corresponding paragraph),
- the lower spring (2) using brake shoe pliers.
Using adjustable pliers, remove the shoe side
retaining springs.
In turn, pass each brake shoe base over the fixed
point. Squeeze the bases of the shoes together to
separate the ends at the wheel cylinder end.
Separate the assembly (RAI and shoes) from the
brake backing plate then remove it, after
unclipping the handbrake cable.
98992-2R
33-5
Page 33 of 105
REAR AXLE
Bearing
SPECIAL TOOLING REQUIRED
Emb. 880 Inertia extraction tool
Rou. 943 Hub plug extractor
TIGHTENING TORQUES (in daN.m)
CHECKING
Check the end float using a dial gauge mounted
on the drum : 0 to 0.03 mm maximum.
REMOVAL
Remove:
- the hub plug using tools Rou. 943 + Emb. 880,
- the brake drum (see corresponding
paragraph).
From the drum, remove:
- the bearing retaining clip,
- the bearing using a tube.
Hub nut 17.5
Wheel bolts 9
33
REFITTING
Using a tube and a press, fit the bearing until it
touches the shoulder.
Fit:
-a new clip,
- the drum on the pre-lubricated stub axle,
-a new lock nut and tighten to the correct
torque,
- the hub plug.
Adjust:
- the brake shoes by repeatedly pressing the
brake pedal,
- the handbrake (see section 37 "Controls").
33-7
Page 34 of 105
REAR AXLE
Shock absorber
REMOVAL
With the vehicle on its wheels, remove the lower
mounting bolt (1).
Lift the vehicle and remove:
- the wheel,
- the upper mounting bolt (2),
- the shock absorber.
PRECAUTIONS TO BE TAKEN BEFORE FITTING
Shock absorbers are stored horizontally in the
Parts Stores.
Under these conditions it is possible that the shock
absorbers, which are designed to operate in a ver-
tical direction, will have de-primed.
Before fitting the shock absorbers to the vehicle
compress them a few times by hand in the vertical
position.
REFITTING
Fit:
- the shock absorber,
- the upper mounting bolt coated with
MOLYKOTE BR2, without tightening it,
- the wheel.
Lower the vehicle.
Position the lower mounting bolt coated with
MOLYKOTE BR2.
Torque tighten both bolts.
33
Upper mounting bolt 11.5
Lower mounting bolt 8.5
TIGHTENING TORQUES (in daN.m)
13133R
33-8
Page 35 of 105
REAR AXLE
Anti-roll bar, tubular rear axle
TIGHTENING TORQUES (in daN.m)
Bar mounting bolt 5.5
REMOVAL
1Mounting bolt
Put the vehicle on a lift with the wheels hanging
free.
On each side, remove bolts (1) and retain the
captive nuts.
Remove the bar.
REFITTING
On each side, refit the bolts (1) with the captive
nuts.
Tighten to the recommended torque.
33
13132R
33-9
Page 36 of 105

REAR AXLE
Half suspension arms, tubular rear axle
REFITTING
Ensure the bearing races or the needle bearings
are in perfect condition, otherwise replace them
(see section "Bushes, tubular rear axle").
The needle bearings are greased for life and do
not require further lubrication.
NOTE : new suspension arms are supplied by the
Parts Department fitted with bearing races or
needle bearings (depending on side).
Fit the two half suspension arms together until
dimension (B) is obtained.
NOTE : dimension (B) corresponds to the distance
between the same two mounting points for the
anti-roll bar on the suspension arms. It is therefore
possible to obtain this dimension by positioning
the anti-roll bar in its location and checking the
mounting bolts can be correctly positioned.
Ensure the fitting direction is observed.
Refitting is then the reverse of removal.
NOTE : if the half suspension arm is renewed,
bond the brake backing plate mounting bolts
with
Loctite FRENBLOC.
Bleed the brake circuit.
Adjust the handbrake control (see section 37).
33
TIGHTENING TORQUES (in daN.m)
Bearing mounting nut 11
Anti-roll bar mounting bolt 5.5
Wheel bolt 9
Shock absorber base bolt 8.5
REMOVAL
Put the vehicle on a two post lift, remove:
- the anti-roll bar,
- the lower shock absorber mounting,
- the secondary handbrake cable, disconnecting
at the central adjuster under the vehicle,
- the brake pipe,
- the two bearing mounting nuts (A).
Slacken the two nuts (A) on the other bearing so
the half suspension arm can be released from its
mountings.
Remove the half suspension arm, separating one
from the other.
13132R1
86320R
33-10
Page 43 of 105
REAR AXLE
Four bar rear axle
SPECIAL TOOLING REQUIRED
Emb. 880 Inertia extractor
TIGHTENING TORQUES (in daN.m)
Upper shock absorber mounting 8.5
Lower shock absorber mounting 11.5
Wheel bolts 9
REMOVAL
Remove:
- the wheels,
- the shock absorbers,
- the suspension bar plugs.
Remove using tool Emb. 880 :
- the two suspension bars,
- the two anti-roll bars, retaining the central
shackle.
Clean and lubricate the bar splines using
MOLYKOTE BR2.
REFITTING
The anti-roll bars cannot be removed from the
vehicle when the shock absorber replacement tool
is in position. Because of this, and to make it
easier to refit the shackle, a wooden block must
be made according to the diagram below.
Fit:
- the shackle on the block (locally made) in the
centre of the rear axle assembly,
33
13135R
Dimensions in mm and degrees ( ° ).
33-17