SUNWARD SWDM240B - Every 10 Hours Maintenance; Checking and Adjusting Track Tension

SWDM240B OPERATION & MAINTENANCE MANUAL
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7.3 EVERY 10 HOURS MAINTENANCE
7.3.1 Checking And Adjusting Track Tension
Danger: When releasing pressure, sprayed-out lubricating grease with high pressure can
penetrate into human body causing death.
Note：
1）Pressure relief valve only can be loosened for one circle. If track is unable to loosen, turn off
the vale and consult SUNWARD after-sale service department.
2）Don’t check overflowed lubricating grease by pressure relief valve. Check track or tension
cylinder for track sag.
FIG.7-3-1
FIG. 7-3-2
（1）Idler （2）Carrier roller （3）Ruler （a）Track sag
1. Operate the machine according to the direction of idler, place the drilling rig on firm level
ground and place the track pin shaft (1) right on the carrier roller (2).
2. Put a ruler (3) on the track, and it should be long enough to measure from idler (1) to carrier
roller (2).
3. Measure the maximum sag for track, which is measured from the lowest point to the bottom
of the ruler and adjust the track correctly. The track sag “a” is about 20mm to 35mm.
Pin shaft
Grease filler