XCMG XE210C Operating & Maintenance Manual page 46

XE210C Hydraulic Excavator
When the crawler belt tension is adjusted with high-pressure grease, the safety need be
paid attention to.

The grease is pressed into the crawler belt tension adjustment system under the condition of high
pressure. When adjusting, if the maintenance
procedure is not observed, the grease emission plug
①will fly out, which will cause serious injury or
damage.

In order to relax the crawler belt tension, the grease
emission plug ① is loosened, the emission plug
which is loosened is not turned over one lap, and
simultaneously, the grease emission plug must be
loosened slowly.

Do not approach face, hands, feet or other body parts
to the grease emission plug ①
Do not remove the buffer spring
The buffer spring assembly is used to alleviate the impact force of tension pulley, the buffer spring includes a
high-tension spring, if the high-tension spring is removed in a wrong way, the spring will fly out, which
causes serious injury or death.
Relevant safety rules of high pressure oil
The internal part of the hydraulic system always has pressure; when checking or replacing pipes or hoses, the
pressure in the hydraulic oil pipe must be checked whether has been released or not. If oil pipe still has the
pressure, serious injury or damage can be caused, so the following rules need to be done:

When the hydraulic system has the pressure, before releasing the pressure, do not carry out check or
replace.

If the surrounding area of the pipes or the hoses is wet, the pipes or the hoses should be checked
whether break or not, and whether the hoses inflate. When checking, goggles and leather gloves
should be worn.

The high pressure oil which leaks from small
orifices can penetrate into skin, and may cause
blindness if contact directly. If skin or eyes which
are contacted with the high pressure oil were injured,
skin or eyes should be flushed by clean water and
go to hospital for treatment.
Operating and Maintenance Manual 46