Group 20, Drive Axle
SM 765, Nov ’06 General operation of drive axle • 20-3-1
General operation
Following procedure shall be applied to disassembly,
inspection, washing, repair, installation and assembly pro-
cess of wheel drive axle component. Especially, disas-
sembly and reassembly procedures are described at the
latter part of this section. Those procedures have to be
observed.
Disassembly of components
Before disassemble the wheel drive axle, drain out the
wheel drive axle oil, remove the required hydraulic line
and take off the wheel drive axle from the forklift as illus-
trated to the manual to disassemble the wheel drive axle.
Please observe followings.
Cleanness - Work at the clean place. Make sure that
impurities or dirt should not get into the unit while repair-
ing. The bearing can be worn and damaged by the dirt.
Before start the disassembly, always keep clean the out-
side of unit.
Assembly - When disassemble many assemblies, place all
parts with the same order of disassembly on the clean
bench. It makes the assembly simple and there is no
chance to lose the part.
Use of part-disassembly tools - Always control the
load that is applied to the shaft, bearing and housing. The
removal of these parts is limited. Never apply the power to
drive the parts when they are completely stopped. For
removal, it is recommended to use soft hammer, bar and
wooden hammer.
Bearing - Use designated puller when takes off the reus-
able bearing. Apply the clean oil to bearing and cover it
with clean cloth without fuzz or clean paper when store it.
Snap ring - Take off the snap ring with designated pliers.
This snap ring is reusable if there is no groove and it is not
loosened.
Cleaning of part
Do not use gasoline because it is very combustible. It is
also not safe to the working environment.
To complete the disassembly, appropriate cleaning is
required.
Clean the processing surface of steel part with industrial
solvent.
Wash out inside and outside of bearing, cap and housing.
It is possible to clean the unprocessed or unpolished cast
iron part with steam.
Treat the part or cast iron that is being washed by solvent
or steam at the light alkali liquid tank. Complete dry the
part before rinsing.
For the part with rough surface like castings, do not clean
with dust cloth.
Rinse all parts completely. Clean all part except rough-
surfaced part with clean cloth and dry it. Slightly apply
the oil to the part and wrap it with anti-corrosive paper for
store. Keep it to clean and dry place.
Until the bearing gets clean, wash out with clean solvent.
When dry the bearing with compressed air without mois-
ture, make sure that the bearing does not get out of its
place or damaged because of compressed air.
Do not rotate the bearing while drying. It is no problem to
slowly rotate it with hands for faster dray.
N
TE
Do not wash out the emulsion product with
solvent.
Part checking
Check all wheel drive axle components before reassemble
after cleaning, and decide it if it needs to be replaced.
It is important to carefully and completely check all parts.
When replace all he parts that seem to be worn, stressed or
damaged, it saves money and time.
Section 3
General operation of drive axle
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