2. Maintenance
2-1
2.1
Cautions for Overhauling
2.1.1
Precautions before starting work
(1) Work to be performed
It is very important to always plan in advance what facilities, tools, instruments, materials, oil, etc.
you will need to use; the exact locations and methods of performing inspection, adjustment, or
disassembly; and the key points of any repair work to be performed.
(2) Care not to spill oil
Use a pan to collect used compressor oil, engine oil when changing the oil or attaching or detaching
an oil line. If a large volume of oil is expected to flow
out, make
sure to drain any accumulated oil
from the reserve tank, engine oil pan in advance.
[Follow the designated regulations to dispose of compressor oil and engine oil.]
(3) Care when detaching parts
When disassembling a complicated part, put a matching mark to indicate the position of detached
parts for future reference. Make sure that the negative
-
cable
is detached from the battery
terminals before starting repair work.
(4) Use genuine parts
Make sure to use genuine parts when changing parts. Otherwise, it degrades performance and it
shortens machine life.
(5) Tools to be prepared
①
Measuring instruments
(e. g. tester, insulation resistance gauge etc.)
②
Tools
③
Torque wrenches
④
Jigs and specialized tools
⑤
Sealing tape (GAFLON seal tape)
⑥
Liquid gasket (
THREEBOND
1212)
⑦
Lubricant (NICHIMOLY LAP spray or equivalent)
⑧
Molybdenum sulfide (Paste spray type)
2.1.2
Disassembly and
re
assembly
①
Select such a place for component disassembly where it is enough spacious and shall be dust-free.
②
Clean also the surroundings of the part or component to be disassembled, removing smudge and
adhesive matter by washing them.
③
Before removing nylon tubes, hydraulic hoses and also fuel hoses, clean the inside of the machine
unit. And also cover all the openings of them temporally to prevent foreign matter and dust from
entering inside.
④
When dismantling the disassembled parts or component, wash their surfaces well and place them
on clean paper or cloth so that they can be kept clean and from being damaged.
⑤
Check each part for any dirt and discoloration. Then wash it in detergent oil (diesel oil) slightly.
However, do not wash rubber parts with diesel oil.
⑥
Be careful not to damage disassembled parts, they are precision built.
⑦
Replace consumables such as oil seals, O-rings, filters, oil, etc. with new items when reassembling
parts.
⑧
Apply “CALTEX MULTIFAK EP1” to O-ring surface and “MULTINOC SDX” to sliding portion of
oil seal.
⑨
When reassembling, place the parts or components according to reassembling order and
reassemble them correctly without any part un-reassembled and un-used.
⑩
When reassembling an assembled part (set part), be sure to replace it as an assembly.
⑨
Grease
●
Lithium based all-purpose grease
[CALTEX MULTIFAK EP1]
●
Lithium natrium based heat resistant
grease [MULTINOC SDX]
⑩
Diesel oil
⑪
Compressor oil
⑫
Cleaning cloths
⑬
Literatures (such as manuals etc.)
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