1 - 3
Wheel Hub Assembly
Removal
It is assumed that roadwheels are removed and the machine
is correctly supported.
Drain the oil from the chain case via plug P1.
Slacken nuts B (6 off) on retaining ring C. Fit a large
adjustable spanner to the boss D and rotate the hub
assembly until D is horizontal and pointing to the front of the
machine (front wheel) or to the rear of the machine (rear
wheel). In this position the drive chain is at its slackest.
Note: If the front hub is to be removed, both hubs on that
side must be rotated to slacken both chains.
Remove cover plate G and remove the spider (see Drive
Motor Removal, Section E). Lift off the appropriate chain
from the drive sprocket. Note that the front hub is driven by
the inner chain, therefore the rear chain will need to be lifted
off first.
Remove the nuts B with their respective bolts and lift off
retaining ring C. Pull the hub assembly out and remove the
chain from the sprocket E. Remove the hub assembly from
the chassis. Remove and discard seal F.
Replacement
Replacement is a reversal of the removal procedure.
A new 'O' ring F must be fitted. (Grease with JCB MPL
Grease.)
Adjust the drive chain(s) (see Section 3, Routine
Maintenance)
Torque tighten nuts B to 98 Nm (72 lbf ft, 10 kgf m).
Refill the chain case with the correct oil at point P2.
Section F
Transmission
9803/8500
Section F
1 - 3
Issue 2
Tyres and Wheels
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