Adjustment Of The Track Tension - JUNTTAN PM 20L Operator's Manual

JUNTTAN
Routine service section

7.12.3 ADJUSTMENT OF THE TRACK TENSION

n DANGER
Grease is under high pressure. Do not watch the relief valve to see if grease is
escaping. Watch the track or track adjustment cylinder to see if the track being
loosened.
The track tension evaluated from the distance the track chain drops from the lower roller
when the track frame is raised. The distance from the lower roller (1) to the chain in the
middle should be 60-100 mm. To raise the track frame, turn the machinery deck
crosswise to the undercarriage and push the leader foot to the ground.
To adjust the track tension remove the access plate (2). There is a grease-filled cylinder
under the access plate. In the tool kit provided with the rig you will find an adapter for a
grease gun which will fit the nipple on the cylinder.
Track tightening
Add grease through fill nipple until the correct track tension is reached.
Operate the machine back and forth to equalise the pressure.
Check the amount of track sag again and adjust as necessary.
Track loosening
Loosen fill nipple carefully (one turn maximum) until the track begins loosen.
Tighten fill nipple when the desired track tension is reached.
Operate the machine back and forth to equalise the pressure.
Check the amount of track sag again and adjust as necessary.
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