Maeda MC815C, Service Manual, Page: 53 / 378

2-21
[Loosening the tension]
Discharging grease without using the following procedure is extremely dangerous. If the rubber track is not
loosened, ask us or our sales service agency for repair.
1. Slowly loosen the plug (1) to discharge the grease.
If the grease cannot be smoothly discharged, slightly move the
Machine back and forth.
・
Do not loosen the plug (1) for more than one turn. If it is loosened
by more than one turn, there is a risk that the plug (1) will be
ejected due to the high pressure of the internal grease.
At this time, do not loosen any parts except the plug (1).
Also, do not have your face pointing in the direction in which plug
(1) is mounted.
・
If the rubber track is not loosened by the procedure described
here, request us or our sales agency for repair.
2. Screw in the plug (1).
3. To ensure that the proper tension is applied, keep the engine at low
idling speed to advance a distance equal to the ground contact
length, and gradually stop.
4. Check the tension of rubber track again.
If the tension is not appropriate, make another adjustment.
[2] Checking and re-tightening rubber track bolts
Since using the Machine with loose rubber track bolts (1) will cause them to
be broken, tighten any loose bolts.
[Method for retightening bolts]
1. After first tightening the bolts with a tightening torque of 137 ± 19.6
N•m [14 ± 2 kgf-m], ensure that the nuts and shoes are tightly fitted to
the link mating surface.
2. After performing these checks, tighten further by an angle of 90 ± 10
degrees.
[Tightening sequence]
Tighten the bolts in the order indicated in the diagram at the right.
After tightening, check to ensure that the nuts and shoes are tightly fit to the
link mating surface.