How to inspect and change the oil and filter in the synchronous shuttle gearbox of a JCB bucket loader.



Checking the Oil Level

1

Make sure the park brake is engaged and the

transmission set to neutral. Lower the loader arms and

backhoe to the ground, switch OFF the engine and

remove the starter key.

2

Open the bonnet, see Engine Panels, Opening and

Closing the Bonnet.

3

Switch OFF the engine and remove the starter key, fill

the transmission to maximum mark on dipstick/filler A.

Use only the recommended oil.

4

Start and run the engine slowly for a period not

exceeding five minutes. This allows the oil to fill filter,

pump, torque converter, oil cooler and hoses.

5

Switch OFF the engine and remove the starter key, wait

approximately 20 seconds. Check the oil level and if

required, fill to dipstick level.

Changing the Oil and Filter

The transmission oil should be drained through the suction

strainer aperture to flush out any particles which fall off the

strainer during its removal.

! WARNING

Make the machine safe before getting beneath it. Lower

the attachments to the ground; engage the parking

brake; remove the starter key, disconnect the battery.

2-3-2-2

1

Park the machine on level ground. Engage the parking

brake. Lower the attachments to the ground. Stop the

engine. Remove the starter key. Disconnect the battery.

! CAUTION

When the strainer is removed, oil will gush out. Keep to

one side when you remove the strainer.

2-3-4-1

2

Place a container, of suitable size beneath the drain

plug. Remove bolts D. Pull out the strainer E and its

gasket F. Allow the oil to drain into the container.

3

Clean the strainer with a suitable solvent. Follow the

solvent manufacturer’s instructions on safety.

4

Fit the strainer E and a new gasket F. Apply JCB

Threadlocker and Sealer to bolts D before fitting and

tightening them. Torque tighten the bolts to 10 Nm (7

lbf ft).

5

Unscrew and remove the filter B. Fit the new filter:

5.1 Smear seal C with transmission oil.

5.2 Screw the filter on until it just contacts the filter

head.

5.3 Turn the filter at least another 3/4 of a turn.

6

Fill the system with new oil through the dipstick/filler A.

Do not fill past the top mark on the dipstick.

Note: Fit only a genuine supplied JCB filter, otherwise

damage to the system may be incurred through

contamination.JCB