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5-36
Track
Check and adjust the tension of the track
Check every 10 hours.
1) Park the excavator on a level and solid ground.
2) Put the bulldozing board at the back and fully extend the piston rod of the bulldozing cylinder until the crawler is slightly
lifted.
3) Support the bucket on the ground and manipulate the boom cylinder to raise the front of the excavator (as a in Figure
1).
4) Correctly tension the track so that there is a 10-15 mm deflection between the middle thrust wheel and the track (as b
in Figure 1).
5) Remove the cover
①
(a in Fig. 2) on each track frame, and expose the fuel nozzle of the tensioner (
②
in Fig. 2).
6) In order to loosen the track, first loosen the joint
②
(Fig. 2) to let the grease flow out, and then retighten it after getting
the correct tension.
7) In order to tension the track, connect the joint of grease gun (provided as a random tool) with the joint
②
(Fig. 2).
Then add oil by using a grease gun until it is correctly tensioned.
Fig. 1
Fig. 2
Thrust
wheel
Rubber
track
Summary of Contents for U27
Page 1: ...U27Hydraulic Excavator Instruction Manual Guangxi Yuchai Heavy Industry Co Ltd...
Page 5: ...1 1 Preface...
Page 17: ...2 1 Safety regulations...
Page 44: ...3 1 Parts introduction...
Page 49: ...3 6 Panel meter Oil level pointer Timing display Water temperature pointer Indicator area...
Page 55: ...4 1 Operation guide...
Page 89: ...5 1 Maintenance...
Page 130: ...6 1 Accessories guide...