SUNWARD SWE50B, Руководство по эксплуатации и техническому обслуживанию

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5.5.2.5
Clean Oil Returning Filter
Warning

With engine shut, parts and oil are still at high
temperature. Wait for engine to cool down, before
starting operation.

There is pressure inside hydraulic oil tank. Release
pressure before opening oil fill cap located on top of
hydraulic oil tank.

To facilitate access, swing upper turret 90 degree, then stop
the machine at level ground.

Position excavator with arm cylinder fully retracted and
bucket cylinder fully extended.

Lower bucket to ground, run engine unloaded at low speed
for 5 minutes, then stop the engine, remove key, set pilot
control lever to LOCK position.

Clean up upper hydraulic oil tank to prevent dirt getting into
hydraulic system, press down lock cap to release internal
pressure.

Loosen 6 bolts to release internal pressure, and remove cap
(1) at which moment, the cap might be ejected under spring
(2) force, therefore it’s necessary to hold the cap down when
removing these bolts.

Pull out upper end of bar (3), remove spring (2) and filter
(4).

Remove dirt adhered on filter (4), rinse it with fresh diesel
oil or washing oil. If the filter (4) is damaged, replace it with
new one.

Reinstall filter (4), insert it to the bulge (5) in oil tank.

When installing, the bulge under cap (1) must secure spring
(2), then use bolt to fasten it.
5.5.2.6
Check and Adjust Fan Tension
【
Important
】

Excessive tension on belt will accelerate the wear-out of
bearing and belt. Loose belt may cause incomplete
battery charging, engine overheating, belt abnormality
and premature wear-out.
1) Press at a point midway between fan belt pulley and
engine belt pulley to check fan belt tension.
2) The deflection A should be 8-12mm, when the pressing
with a pressure of 10kgf
（
98N
）
.
3) If the tension is not within specific range, loosen bolts on
adjust plate and engine bracket, move engine until proper