U20-3, U25-3 WSM Machine body (Service section)
II-S-48
d Upper roller and track roller
1) Assembling procedure
1. Keep possible out-of-center between the
sprocket, idler and track roller within
±
2mm
(with the idler loosely fitted).
CAUTION
When jacking up the machine, place wooden
blocks or the like under the lower frame to prevent
the machine from falling.
2) Track roller
1. When attaching the track roller, make sure
there is no gap between the frame end and
the track roller bracket.
2. Tightening torque of roller assembly
mounting bolt:
103~117.7N·m(10.5~12kgf·m)
3. Apply screw LOCTITE (Three-Bond
1305P) to the internal threads. Before
doing this, wipe out oil, paint and other
coating off the surface.
3) Carrier roller
1. Tightening torque of carrier roller:
103~117.7N·m(10.5~12kgf·m)
2. Apply screw LOCTITE (Loctite 271) to the
carrier roller.
No. Part No. Part name Q’ty Remarks
1
RB411-2170Δ
Track roller,
assembly
6U-20-3
RB511-2170Δ
Track roller,
assembly
6U-25
2 RC601-21851 Bolt 12
3 RC411-21903
Carrier roller,
assembly
2
4 01173-61270 Bolt 2 M10×1.25 7T
5 02174-60120 Nut 2
6 04512-60120 Spring washer 2
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