Disassembly Of Front Idler - Doosan DX140R Shop Manual

Disassembly of Front Idler

1. Detach T/Spring assembly from Idler assembly.
Remove 4-M16 bolts and washers (10, 11, Figure 15).
2. Remove the plug (8, Figure 14) from the bearing (4, Figure
14) (using 6mm "L" wrench).
NOTE: About 330cc of oil will be discharged. Prepare
an oil cloth or pan to prevent spillage on the
ground.
3. Using a hammer and pin-removing tool, remove the pin(7,
Figure 16) on one side.
4. Remove the bearing (4, Figure 14) on the side from which
the pin (7, Figure 16) has been removed.
5. From the removed bearing (4, Figure 14) and front (1,
Figure 14), separate the floating seal (5, Figure 14).
6. From the shaft (3, Figure 14), separate the O-ring (6,
Figure 14).
NOTE: If the O-ring is not removed, the bearing sub-
assembly on the opposite side will be difficult to
separate
7. Separate the bearing sub-assembly on the opposite side of
the front (1, Figure 14).
8. Separate the floating seal (5, Figure 14) from the
separated bearing sub-assembly and front (1, Figure 14).
9. Separate the pin (7, Figure 14) from the separated bearing
sub-assembly.
10. Separate the shaft (3, Figure 14) from the bearing (4,
Figure 14).
11. Separate the O-ring (6, Figure 14) from the shaft (3, Figure
14).
12. Separate the bushing (2, Figure 18) from the front (1,
Figure 18).
NOTE: Insert jig 2, and press jig 1 to separate.
Use the hydraulic press for pressing the jig. Be
careful of sputtering.
13. Turn the front upside down. Separate the bushing (2,
Figure 18) in the same manner as described above (Figure
18).
Track Assembly
Page 18
Figure 15
Figure 16
Figure 17
Figure 18
SP001941