9 - 2
Transmission (cont'd)
Drive Chain Lubrication from machine number 678000
The final drive to the wheels is by chains. A chain casing on
each side of the machine houses two chains, one to the front
wheel and one to the rear wheel. The chains run in an oil
bath.
Checking the Oil Levels - for interval see Service Schedule
1 Park the machine on level ground.
2 Stop the engine.
3 On the left side of the machine, remove one of the
inspection cover bottom bolts A and its spring washer.
Check that the oil level is up to the bottom of the hole.
4 If necessary, top up through the bolt hole using the
recommended oil. Wipe up any oil spillage.
5 Clean bolt A, its spring washer and its hole and apply
JCB Threadlocker & Sealer to the threads of the bolt. Do
not overtighten or you could strip the threads in the
housing.
6 Repeat steps 3 to 6 on the right side of the machine.
Changing the Oil - for interval see Service Schedule
1 Park the machine on level ground.
2 Stop the engine.
3 On the left side of the machine, remove one of the
inspection cover bottom bolts A and its spring washer.
4 Place a suitable receptacle under drain plug B to collect
the oil.
5 Remove plug B and completely drain the chain casing.
6 Clean plug B and its aperture. Renew the sealing washer
if necessary.
7 Refit plug B.
8 Using the recommended oil, fill the chain casing via bolt
A hole until the oil is level with the bottom of the hole.
Wipe up any oil spillage.
9 Clean bolt A, its spring washer and its hole and apply
JCB Threadlocker & Sealer to the threads of the bolt. Do
not overtighten or you could strip the threads in the
housing.
10 Repeat steps 3 to 9 for the right side chain casing.
Section 3
Routine Maintenance
9803/8500
Section 3
9 - 2
Issue 5*
S256271
AA
BB
Note: This diagram shows the chain casing on the left side of the machine. The right side casing is a mirror image of the left
side casing. The rear wheel is shown removed for clarity.
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