L3-4 Hydraulic Component Repair 7/02 L03026
9. .Remove bearing plate (2). Remove O-ring (23)
and stud O-rings (1). Remove dowels (20) if
damaged or replacement of the bearing plate is
necessary.
10. Remove coupling (21). Remove snap ring (22) if
damaged or replacement is necessary.
NOTE: Disassembly of the rear pump section is now
complete. Do not remove thru studs at this time as
the studs serve as guides for disassembly.
11. Remove bearing plate (10, Figure 3-4). If the
bearing plate is stuck, tap lightly with a plastic
hammer to loosen it. Remove O-rings (9) and
(11).
12. Remove steel rings (13), backup ring (14),
O-ring, retainer (15) and isolation plate (17).
Remove dowels (16) if damaged or if replace-
ment of the bearing plate (10) is necessary.
13. Unthread the thru studs (12) and remove.
Remove flange (5), if stuck tap flange lightly
with a plastic hammer to loosen. Remove
O-ring (8). Remove dowels (6) if damaged or if
replacement of the flange (5) or gear plate (7) is
necessary.
14. Remove steel rings, backup ring, O-ring and
retainer. Remove drive gear (1) and idler (3)
from gear plate (7). Remove both pressure
plates (18).
15. Remove outboard shaft seal (2), snap ring (21)
and inboard shaft seal (20).
NOTE: To aid in shaft seal removal place the flange
on two small wooden blocks, refer to Figure 3-5.
16. Use a punch and hammer and tap the outboard
shaft seal out of the flange bore. (Refer to Fig-
ure 3-6.) Use care not to mar, scratch or dam-
age the seal bore surface, or bearings.
17. After the seals and snap ring have been
removed, clean the bore thoroughly. If neces-
sary, the bore may be smoothed with number
400 emery paper (only).
FIGURE 3-3. HOIST PUMP DISASSEMBLY
1. O-Ring
2. Bearing Plate
3. O-Ring
4. O-Ring
5. Gear Plate
6. Dowel
7. Stud
8. O-Ring
9. Connector Plate
10.Steel Ring
11.Idler Gear
12.Drive Gear (Rear)
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
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