ADJUSTMENT/MAINTENANCE

TRACKS

SERVICE SPECIFICATIONS

Clean.......................Periodically and when the machine has been working in mud Check tension.......................................................................................Periodically Check track shoe bolt torques.......................................................Every 250 hours (after the first 50 hours during the run-in period)

IMPORTANT: If tracks are too tight, they wear quickly. If tracks are not tight enough, they wear quickly and the links can catch on the sprocket wheel or slide off the idler wheel or the sprocket wheel. Clean the tracks after work.

CLEANING

When the machine has been working in mud, a reduction in temperature can cause the mud to solidify.

STEP 1

CD00E188 Place the upperstructure at right angles to the undercarriage. Use the attachment to press on the ground and lower the boom until the track is raised off the ground.

STEP 2

CD00E060 Turn the engine throttle button to maximum speed position.

STEP 3

BD00K071 Use the travel speed selector to select high speed.

STEP 4 STEP 3

CD00E147 Operate the travel control lever for the raised track forwards and then in reverse, to remove the mud.

STEP 5

Repeat Steps 1 to 4 for the other track.

CHECKING TENSION

STEP 1

Park the machine on flat, horizontal ground.

STEP 2

Clean the tracks.

CD00E188 Place the upperstructure at right angles to the undercarriage. Use the attachment to press on the ground and lower the boom until the track is raised off the ground.

STEP 4

Use the travel control lever to operate the raised track in reverse for a few moments.

STEP 5

Stop the engine and remove the starter switch key.

STEP 6

BD00K016 Measure the sag of the track at the center between the base of the undercarriage and the pad. The value should be between: Steel tracks : 280mm and 300mm (11 to 11.8 in.)

STEP 7

Adjust tension if necessary and then lower the raised track to the ground.

STEP 8

Repeat Steps 3 to 7 for the other track.

ADJUSTING TENSION

This operation is to be carried out after the tension has been checked.

TO INCREASE TENSION STEP 9 STEP 10

BD00K016 Inject grease to obtain the right amount of track sag. The value should be between: Steel tracks : 280mm and 300mm (11 to 11.8 in)

BD00K015 With the track in raised position, clean the grease fitting adaptor and connect the grease pump hose to the grease fitting.

STEP 11

Remove the grease gun, clean the grease fitting. and then lower the raised track to the ground.

STEP 12

Repeat Steps 1 to 3 for the other track.

TO REDUCE TENSION

STEP 1

BD00K017 With the track in raised position, loosen the grease fitting adaptor about three turns to allow grease to flow out of the cylinder.

WARNING: Never unscrew the grease fitting adaptor completely to speed up the flow of grease. The grease in the cylinder is under high pressure.

STEP 2

BD00K016 As soon as the right track sag is obtained, tighten the adaptor. The value should be between: Steel tracks : 280mm and 300mm.

STEP 3

Clean the grease adaptor and fitting and then lower the raised track to the ground.

STEP 4

Repeat Steps 1 to 3 for the other track. IMPORTANT: If the grease fitting adaptor is damaged, grease may leak out. Check the condition of the grease fitting adaptor regularly and replace it if necessary.