1. GENERAL PRECAUTIONS FOR REPAIRS
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1.1 PREPARATION BEFORE
DISASSEMBLING
(1) Understanding operating procedure
Read OPERATION
& MAINTENANCE MANUAL
carefully to understand the operating procedure.
(2) Cleaning machines
Remove soil, mud, and dust from the machine
before carrying it into the service shop to prevent
loss of work efficiency, damage of parts, and
difficulty in rust prevention and dust protection
while reassembling.
(3) Inspecting machines
Identify the parts to be disassembled before
starting work, determine the disassembling
procedure by yourself considering the workshop
situations etc., and request procurement of
necessary parts in advance.
(4) Recording
Record the following items for communication
and prevention of recurring malfunction.
1) Inspection date and place
2) Model name, applicable machine number, and
hour meter read
3) Trouble condition, location and cause.
4) Visible Oil leakage, water leakage and damage
5) Clogging of filters, oil level, oil quality, oil
contamination and loosening of connections
6) Result of consideration if any problem exists
based on the operation rate per month calculated
from hoL:Jr meter indication after the last inspection
date.
(5) Arrangement and cleaning in service shop
1) Tools required for repair work.
2) Prepare space to place the disassembled parts.
3) Prepare oil containers for spilling oil etc.
A
WARNING
1.2 SAFETY IN DISASSEMBLING
AND ASSEMBLING
1) Wear appropriate clothes with long sleeves,
safety shoes, safety helmet and protective
glasses.
2) Suspend warning tag "DO NOT OPERATE" from
the doorknob or the operating lever, and have a
preliminary meeting before starting work.
3) Stop the engine before starting inspection and
maintenance to prevent the operator being
caught in machine.
4) Identify the location of a first-aid kit and a fire
extinguisher, and also where to make contact in
a state of emergency.
5) Choose a hard, level and safe place, and place
the attachment on the ground securely.
·6) Use a lifter such as a crane to remove heavy
parts (20 kg [45 lbs] or more) from the machine.
7) Use proper tools, and replace or repair defective
tools.
8) Support the machine and attachment with
supports or blocks if the work is performed in the
lifted condition.
1.3 DISASSEMBLING AND
ASSEMBLING HYDRAULIC
EQUIPMENT - _
(1) Removing hydraulic equipment
1) Before disconnecting pipes, release the hydraulic
pressure of the system, or open the return side
cover and take out the filter.
2) Carefully drain oil of the removed pipes into a
containers without spilling on the floor.
3) Apply plugs or caps on the pipe ends to avoid oil
spillage and dust intrusion.
4) Clean off the external surface of the equipment
before disassembling, and drain hydraulic and
gear oil before placing it on the workbench.
(2) Disassembling hydraulic equipment
1) Do not disassemble, reassemble or modify the
hydraulic equipment without the permission of
the manufacturer, who is not responsib!e for the
performance and function.of the product after
reassembling.
2) When disassembling and reassembling for
unavoidable reason, refer the work to qualified
personnel who have the specific knowledge or
completed the parts service training.
3) Provide matching marks to facilitate reassembling
work.
4) Before starting the work, read the manual of
disassembling procedure, if it is provided, and
decide whether the work can be performed by
yourself.
5) _Use the special jig and tools without fail if they
are specified.
6) If it is hard to remove a part according to the
procedure, do not try it by force but investigate
the cause.
01-1-1
I
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