Reassembly Of Front Idler - Doosan DX140R Shop Manual

Reassembly of Front Idler

1. Take care that foreign matters do not enter the front part.
Wash all parts for assembly.
2. Using the hydraulic press, assemble two bushings (2,
Figure 19) at front (1, Figure 19).
Use the hydraulic press. Take care to prevent accidents.
NOTE: Apply a volatile lubricant on the bushing surface
before insertion.
There must be no dent marks on the flange.
3. Assemble two bearings (4, Figure 20) with the floating seal
(5, Figure 20).
In order not to twist the O-ring, use assembling jig to
assemble the floating seal, as shown in Figure 20. Check
that the floating seal is parallel. Clean up its lapped
surface.
4. On one side of the shaft (3, Figure 21), assemble the O-
ring (6, Figure 21) applied with thin oil (Figure 21).
5. Assemble the shaft (3, Figure 21) with the bearing to which
floating seal has been attached.
6. Insert pin (7, Figure 21)into the bearing on which the shaft
has been assembled.
7. Using the assembling jig, assemble floating seal (5, Figure
14) at the front on which bushing has been assembled.
8. Apply oil to the lapped surface of the floating seal (5,
Figure 14) which was assembled with the bearing.
NOTE: Use engine oil SAE #30/CD or higher grade.
9. Assemble bearing sub-assembly with the front to which the
bushing and floating seal have been assembled (Figure
22).
Track Assembly
Figure 19
Figure 20
Figure 21
Figure 22
SP001941
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