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5.5.3.4 Check Track Tension
Run engine at low idling, move the machine forward a
distance equals to the length of track on ground. Then stop
the machine.
As shown in right fig, choose a straight long rod; place it
on track over idler (1) and carrier roller (2), measure the
max distance ―A‖ between upper surface of track and
bottom surface of the rod.
Standard deflection ―A‖ should be 20-28 mm (0.8-1.1 in).
If the track tension is not at standard value, adjust it in the
following manner:
1) Pump in grease through grease fitting(2) with a grease
pump.(pump fitting (2) and plug screw (1) are integral)
2) To check track to evaluate the proper tension of track.
Gradually move machine forward（7-8 m（23 ft - 26 ft
3 in）.
3) Recheck track tension, if the tension is improper,
re-adjust it.
Warning
There is a hazard that plug screw may fly out under high
lubrication grease pressure. Never loosen plug (1) by
over one turn. (1).
Do not loosen any parts other than plug screw (1). Do not
attempt installation facing plug screw (1).
5.5.3.5 Check A/C Cooling Medium Level
Warning
In case that cooling medium gets into eyes or makes
contact with hands, this may cause blindness or freezing
injury, therefore do not contact cooling medium directly.
Do not loosen any parts of cooling medium piping.
Do not allow any naked flame to reach the position with
cooling medium leakage.
If the cooling medium is insufficient in A/C system, the
cooling performance of air conditioning will be bad.
If setting engine to idle at high speed, and operating air
conditioning to extra refrigerating state, there must be
small amount of bubbles in inspection glasses which is
fixed on condenser reservoir.
There are bubbles flowing in cooling medium (continuous
bubble flowing)：Low cooling medium level.
【Important】
If the engine runs at low cooling medium level, this may
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