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Section F
90 - 2
Removal and Replacement (cont'd)
! WARNING
A raised and badly supported machine can fall on you.
Position the machine on a firm, level surface before
raising one end. Ensure the other end is securely
chocked. Do not rely solely on the machine hydraulics or
jacks to support the machine when working under it.
Disconnect the battery, to prevent the engine being
started while you are beneath the machine.
GEN 1-1
Removal
! WARNING
When the propshaft is disconnected the parking brake
will no longer function. The machine must be securely
chocked to prevent any machine movement before
disconnecting the propshaft.
TRAN 1-3
Removing
1
Release the parking brake. Loosen the parking brake
cable bulkhead nuts at the bracket L. Disconnect the
cable from the calliper M . Tie the cable up, out of
harms way.
2
Remove bolts A to disconnect the drive shaft from the
axle.
3
Disconnect the brake pipes from the brake piston
housings, shown at H. Remove tee piece B retaining
bolt and remove the tee piece. Blank off exposed
connections.
4
SD 80 Steer axles only; Remove the cover C from the
proximity switch and then remove the bracket and
switch assembly.
SD 80 Steer axles only; Label and then disconnect
5
hydraulic pipes D from the steer rams, blank off all
exposed connections.
6
Loosen the road wheel retaining nuts E.
7
Make sure that the front wheels are blocked, use the
stabiliser legs to raise the rear end of the machine with
the wheels and tyres clear of the ground.
8
Prop the machine on each side as shown at F.
9
Remove the rear road wheels.
10
Position a jack underneath the balance point (centre) of
the axle and support the axle weight.
Note: Attach a 'cradle' to the jack that will partially embrace
the axle.
11
Remove nuts G, bolts J and washers K.
12
Lower the jack and remove the axle.
9803/3280
Transmission
Rear Axle - PD70, SD80
Purchased from www.WorkshopManuals.co.uk
Replacement
Replacement is the reverse of the removal sequence.
! WARNING
If, for whatever reason, a wheel stud is renewed, all the
studs for that wheel must be changed as a set, since the
remaining studs may have been damaged.
2-3-2-8
Whenever a wheel has been removed, check the wheel nut
torques every two hours until they stay correct.
! WARNING
Bleed the brake system before driving the machine.
BRAK 1-6
Bleed the brake system as described in Section G, Service
Procedures.
Check and adjust the operation of the parking brake as
described in Section G, Service Procedures.
Apply JCB Threadlocker and Sealer to the threads of bolts
A.
SD 80 Steer axles only; If the setting of the steering
proximity switch has been disturbed, then complete the rear
axle proximity switch setting procedure, as described in
Section H, Service Procedures.
Torque Settings
Item
Nm
kgf m
A
79
8
E
680
69
G
607
62
Section F
lbf ft
58
500
448
90 - 2
Issue 1
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