Komatsu PC200-8M0, Shop Manual

Page: 260 / 1254

SEN06122-00
10-500
8
PC200, 200LC, 220, 220LC-8M0
500 Work equipment
Work equipment
Shims for work equipment
Outline
q
There are two types of shims for work equip-
ment, iron shim and plastic shim.
q
The shims for work equipment are inserted to
adjust the clearance of each connected part of
the work equipment so that it will be in the
range of standard value.
Function
Iron shim
q
The iron shim is mainly used for the machine
which has the 100 hours greasing mainte-
nance specification.
q
The purpose of using iron shim is to reduce the
lateral play of work equipment.
a
There are two types of iron shims, integrated
shim and separated shim.
Plastic shim
q
The plastic shim is mainly used for the
machine which has the 500 hours greasing
maintenance specification.
q
The purpose of using plastic shim is to reduce
the lateral play of work equipment and to pre-
vent the squeal or galling caused when iron
connected parts are rubbed each other.
q When the plastic shim is used with the bushing
which extends the greasing interval, it prevents
the squeal caused by grease shortage and
then it can extend the greasing interval.
q The plastic shim is always inserted to every
contact face of iron connected part to prevent
the iron parts from rubbing each other.
a
Combined use of the plastic shim with the long
grea sing in terval bu shin g and du st seal
enables to extend the greasing interval to 500
hours.
a
There are two types of plastic shim which has
different flange shape, type A and type B.
a
Whichever type can be used, however, always
use only one type of plastic shim on one con-
nected part and not mix different types.
a
When replacing the plastic shim on one con-
nected part, always use only one type and
new plastic shim.
Type A