Disassembly And Assembly Of Track Roller Assembly - Komatsu PC200-8M0 Shop Manual

400 Undercarriage and frame

Disassembly and assembly of track roller assembly

Disassembly and assembly of
track roller assembly
Special tools
Part number Part name
L 2 796-670-1020 Installer
Disassembly
1. Remove pin (1) and then collar (2).
2. Remove floating seal (3) from collar (2) and
roller (4).
3. Pull out roller (4) from shaft (5) and collar (8)
assembly.
a Since 195 cc of oil is filled in, drain it at
this timing, or underlay some cloth to pre-
vent any careless smearing.
4. Pull out other side floating seal (6) from roller
(4), shaft (5) and collar (8) assembly.
5. Remove pin (7) and then collar (8) from shaft
(5).
6. Remove bushings (9) and (10) from roller (4).
PC200, 200LC, 220, 220LC-8M0
Assembly
1. Using push tool [1], press fit bushings (9) and
1
(10) to roller (4).
2. Fit an O-ring and install collar (8) to shaft (5),
and insert pin (7).
t 1
3. Using tool L2, install floating seal (6a) to collar
(8).
a When installing the floating seal, com-
pletely wash, degrease and dry both O-
ring and the surfaces of floating seal
where they contact each other (shown
hatched area in the illustration). And take
care that there is no dust sticking on the
contact surfaces of floating seal.
a After inserting the floating seal, verify that
the inclination of the seal is less than 1
mm per its diameter and that the protru-
sion height shown as (a) in the illustration
falls within the range of 7 – 11 mm.
SEN06145-00
5
50-400