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FOREWORD
2.
Preparations for work
1)
Before adding oil or making any repairs,
park the machine on a hard and level
ground, and apply the parking brake and
block the wheels or tracks to prevent the
machine from moving.
2)
Before starting work, lower the work equip-
ment (blade, ripper, bucket, etc.) to the
ground. If this is not possible, insert the
lock pin or use blocks to prevent the work
equipment from falling. In addition, be sure
to lock all the control levers and hang warn-
ing signs on them.
3)
When disassembling or assembling, sup-
port the machine with blocks, jacks, or
stands before starting work.
4)
Remove all mud and oil from the steps or
other places used to get on and off the
machine. Always use the handrails, ladders
o r s t e p s w h e n g e t t i n g o n o r o ff t h e
m a c h i n e . N e v e r j u m p o n o r o f f t h e
machine. If it is impossible to use the hand-
rails, ladders or steps, use a stand to pro-
vide safe footing.
3.
Precautions during work
1)
Before disconnecting or removing compo-
nents of the oil, water, or air circuits, first
release the pressure completely from the
circuit. When removing the oil filler cap, a
drain plug, or an oil pressure pickup plug,
loosen it slowly to prevent the oil from
spurting out.
2)
The coolant and oil in the circuits are hot
when the engine is stopped, so be careful
not to get scalded. Wait for the oil and cool-
ant to cool before carrying out any work on
the oil or water circuits.
3)
Before starting work, stop the engine.
When working on or around a rotating part,
in particular, stop the engine. When check-
ing the machine without stopping the
engine (measuring oil pressure, revolving
speed, temperature, etc.), take extreme
care not to get rolled or caught in rotating
parts or moving parts.
4)
Before starting work, remove the leads
from the battery. Always remove the lead
from the negative (–) terminal first.
5)
When raising a heavy component (heavier
than 25 kg), use a hoist or crane. Before
starting work, check that the slings (wire
ropes, chains, and hooks) are free from
damage. Always use slings which have
ample capacity and install them to proper
places. Operate the hoist or crane slowly to
prevent the component from hitting any
other part. Do not work with any part still
raised by the hoist or crane.
00-4
(14)
6)
7)
8)
9)
10) Be sure to assemble all parts again in their
11) When installing high pressure hoses, make
12) When
13) When aligning 2 holes, never insert your
14) When measuring hydraulic pressure, check
15) Take care when removing or installing the
16) If the engine is operated for a long time in a
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SAFETY NOTICE
When removing a cover which is under
internal pressure or under pressure from a
spring, always leave 2 bolts in diagonal
positions. Loosen those bolts gradually and
alternately to release the pressure, and
then remove the cover.
When removing components, be careful
not to break or damage the electrical wir-
ing. Damaged wiring may cause electrical
fires.
When removing piping, stop the fuel or oil
from spilling out. If any fuel or oil drips onto
the floor, wipe it up immediately. Fuel or oil
on the floor can cause you to slip and can
even start fires.
As a general rule, do not use gasoline to
wash parts. Do not use it to clean electrical
parts, in particular.
original places. Replace any damaged
parts and parts which must not be reused
with new parts. When installing hoses and
wires, be sure that they will not be dam-
aged by contact with other parts when the
machine is operated.
sure that they are not twisted. Damaged
tubes are dangerous, so be extremely
careful when installing tubes for high pres-
sure circuits. In addition, check that con-
necting parts are correctly installed.
assembling
or
always tighten them to the specified
torques. When installing protective parts
such as guards, or parts which vibrate vio-
lently or rotate at high speed, be particu-
larly careful to check that they are installed
correctly.
fingers or hand. Be careful not to get your
fingers caught in a hole.
that the measuring tools are correctly
assembled.
tracks of track-type machines. When
removing the track, the track separates
suddenly, so never let anyone stand at
either end of the track.
place which is not ventilated well, you may
suffer from gas poisoning. Accordingly,
open the windows and doors to ventilate
well.
installing
parts,
PC200/220(LC)-7
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