Komatsu 830E-AC Shop Manual page 650

Disassembly
NOTE: As parts are removed they should be laid out
in a group in the same order in which they are
removed.
1. Clean the exterior of the pump assembly thor-
oughly. If the steering pump is attached,
remove cap screws (10, Figure 3-2) and pull the
steering pump free of transition plate (8).
Remove O-ring (16).
2. Remove companion flange from driveshaft. If
necessary, heat to 204° to 260°C (400° to
500°F) to ease removal.
3. Remove coupling (9). Remove snap ring (18) if
damaged or replacement of the coupling is nec-
essary. Remove dowels (3) if damaged, or if
replacement of the bearing plate is necessary.
4. The pump may be supported by placing on
wood blocks with the input drive shaft pointing
down. Mark each section nearest the input drive
gear to facilitate reassembly.
1. O-Ring
2. Bearing Plate
3. O-Ring
4. O-Ring
5. Gear Plate
6. Dowel
L3-6
FIGURE 3-3. HOIST PUMP DISASSEMBLY
7. Stud
8. O-Ring
9. Connector Plate
10. Steel Ring
11. Idler Gear
12. Drive Gear (Rear)
Hydraulic Component Repair
5. Remove nuts (17, Figure 3-2) and remove bear-
ing plate (6) with transition plate (8) and O-ring
(4). Remove cap screws (5) securing the bear-
ing plate to the transition plate and remove
O-ring (7). Remove dowels if damaged, or if
replacement of the transition plate is necessary.
6. Remove connector plate (9, Figure 3-3).
Remove O-ring (8) and steel rings (10) and
(14). Remove dowels (6) if damaged, or if con-
nector plate replacement is necessary.
NOTE: If the connector plate is stuck, tap lightly with
a plastic hammer to loosen.
7. Remove backup ring (15), O-ring and retainer
(16) and isolation plate (17). Grasp the drive
gear (12) and idler gear (11) and pull straight up
and out of the gear plate (5) bore. Remove
pressure plate (18) from gears.
8. Remove gear plate (5) and pressure plate (19).
Remove steel rings, backup ring, O-ring and
retainer and isolation plate. Remove O-ring (3)
and stud O-ring (4).
13. Bearings
14. Steel Ring
15. Backup Ring
16. O-Ring & Retainer
17. Isolation Plate
18. Pressure Plate
19. Pressure Plate
20. Dowels
21. Coupling
22. Snap Ring
23. O-Ring
L03039