Fiat Kobelco EX355 Tier2, Техническое руководство

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EX355 W1-1-1
PRECAUTIONS FOR DISASSEMBLY AND ASSEMBLY
PRECAUTIONS FOR DISASSEMBLY AND
ASSEMBLY
Preparations for Disassembly
• Clean the Machine
Thoroughly wash the machine before bringing it
into the shop. Bringing a dirty machine into the
shop may cause machine components to be
contaminated during disassembling/assembling,
resulting in damage to machine components, as
well as decreased efficiency in service work.
• Inspect the Machine
Be sure to thoroughly understand all disassem-
bling/assembling procedures beforehand, to help
avoid incorrect disassembling of components as
well as personal injury.
Check and record the items listed below to pre-
vent problems from occurring in the future.
- The machine model, machine serial number,
and hour meter reading.
- Reason for disassembly (symptoms, failed
parts, and causes).
- Clogging of filters and oil, water or air leaks, if
any.
- Capacities and condition of lubricants.
- Loose or damaged parts.
• Prepare and Clean Tools and Disassembly Area
Prepare the necessary tools to be used and the
area for disassembling work.
Precautions for Disassembly and Assembly
• Precautions for Disassembly
- To prevent dirt from entering, cap or plug the
removed pipes.
- Before disassembling, clean the exterior of the
components and place it on a work bench.
- Before disassembling, drain gear oil from the
reduction gear.
- Be sure to provide appropriate containers for
draining fluids.
- Use matching marks for easier reassembling.
- Be sure to use the specified special tools, when
instructed.
- If a part or component cannot be removed after
removing its securing nuts and bolts, do not
attempt to remove it forcibly. Find the cause(s),
then take the appropriate measures to remove
it.
- Orderly arrange disassembled parts. Mark and
tag them as necessary.
- Store common parts, such as bolts and nuts
with reference to where they are to be used and
in a manner that will prevent loss.
- Inspect the contact or sliding surfaces of disas-
sembled parts for abnormal wear, sticking, or
other damage.
- Measure and record the degree of wear and
clearances.
• Precautions for Assembly
- Be sure to clean all parts and inspect them for
any damage. If any damage is found, repair or
replace it.
- Dirt or debris on the contact or sliding surfaces
may shorten the service life of the machine.
Take care not to contaminate any contact or
sliding surfaces.
- Be sure to replace O-rings, backup rings, and oil
seals with new ones once they are disassem-
bled. Apply a film of grease before installing.
- Be sure that liquid-gasket-applied surfaces are
clean and dry.
- If an anti-corrosive agent has been used on a
new part, be sure to thoroughly clean the part to
remove the agent.
- Utilize matching marks when assembling.
- Be sure to use the designated tools to assemble
bearings, bushings and oil seals.
- Keep a record of the number of tools used for
disassembly/assembly. After assembling is
complete, count the number of tools, so as to
make sure that no tools are missing.