H2-6 Front Suspensions H02016
MAJOR SUSPENSION REBUILD
Disassembly
NOTE: Refer to your Komatsu Distributor for HYD-
RAIR
®
II repair information and instructions not covered
in this manual.
1. With suspension held in a vertical position (end
cap up), remove capscrews (1, Figure 2-5) and
hardened washers (2). Attach hoist to end cap
structure (16) and lift end cap out of suspension
housing (7) until piston stop (12) contacts upper
bearing structure (6). Remove capscrews (3) and
hardened washers (4). Lift cap structure and
bearing from housing.
2. Remove roll pin (10), nut (11), piston stop (12)
and key (13). Separate cap and bearing. Remove
O-rings (14) and backup rings (15). Remove
bearing (6).
3. Rotate the suspension 180°.
NOTE: Steel balls (9) will fall free when the housing is
rotated.
4. Attach lifting device to the piston (8) and carefully
lift out of housing.
5. Remove capscrews and washers (18 & 19, Fig-
ure 2-8). Install pusher bolts and remove lower
bearing structure (16).
6. Remove and discard rod wiper seal (26) lip seal
(25) and buffer seal (24). Remove and discard O-
rings (20) and backup rings (21).
.
FIGURE 2-8. SUSPENSION ASSEMBLY
1. Housing
2. Plate
3. Capscrew
4. Hardened Washer
5. Capscrew
6. Washer
7. O-Ring
8. Backup Ring
9. Plug (Pressure Sensor
Port)
10. Upper Bearing Retainer
11. Piston Stop
12. Nut
13. Roll Pin
14. Steel Check Ball
15. Piston
16. Lower Bearing Structure
17. Plug
18. Capscrew
19. Hardened Washer
20. O-Ring
21. Backup Ring
22. Key
23. Upper Bearing Structure
24. Rod Buffer Seal
25. Rod Lip Seal
26. Rod Wiper Seal
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