Refitting
!
Make sure the surfaces of all the parts inside the hub
are thoroughly clean, with no waste or burrs.
Lubricate the bearings with Tutela W 140/M-DA oil
(Tutela TRUCK Fe-Axle for vehicles with rear disk
brakes).
Key the wheel hub on the stub axle together with the
brake disc. Insert the internal spacer onto the stub
axle then position the external bearing and thrust
washer.
Screw down and lock the adjustment ring nut to the
required torque.
36411
Figure 107
Strike the wheel hub a few times with a mallet in an axial
direction, turn it in both directions to free the bearing rollers.
Fit the magnetic base (1) together with the dial gauge (2) on
the wheel hub. Set the pointer of the dial gauge (3) at right
angles to the shank of the stub axle.
Reset the dial gauge with a pre-load of 1.5
÷ 2 mm.
With the aid of a lever, move the wheel hub axially and
measure the end float, which must be 0.16 mm (maximum
value).
On obtaining the required end float, lock the screw (5)
retaining the adjustment ring nut (4) to the required torque.
36412
Figure 108
Figure 109
Apply tool (1) 99395026 on wheel hub stud bolts and use
torque meter 99389819 (2) to check whether the wheel hub
rolling torque is at the set value.
Tighten to torque the hub cover (1, Figure 109).
Deposit a sealing bead (Loctite type 574) exclusively
on the hub cover ledge surface and protect the
threaded part.
Rotate the wheel hub until when hub cover (1) is positioned
as shown in the figure. Restore the prescribed quantity of oil
into the hub cover (1) through filling hole (2). Tighten the plug
on the hub cover (1) to the set torque.
79068
S
TRALIS
AT/AD
106
AIR SYSTEM - BRAKES
Base - January 2003