Workman HD SeriesPage 9 -- 36Hydraulic System
Gear Pump Service
1. Retaining ring
2. Shaft seal
3. Front cover
4. Dowel pin
5. O--ring (2 used)
6. Back--up seal
7. Pressure seal
8. Front thrust plate
9. Drive shaft
10. Idler shaft
11. Body
12. Rear thrust plate
13. Pressure seal
14. Back--up seal
15. Rear flange
16. Lock washer (4 used)
17. Screw (4 used)
18. Shaft seal
19. Retaining r ing
20. O--ring
21. Cover
22. Washer (2 used)
23. Socket head screw (2 used)
Figure 28
1
2
3
4
5
6
7
8
9
10
16
17
18
19
20
21
22
23
11
13
14
15
12
5
4
130 in--lb
(15 N--m)
220 in--lb
(25 N--m)
WORKMAN HDX AND HDX--D GEAR PUMP
1
2
3
4
5
6
7
8
220 in--lb
(25 N--m)
WORKMAN HD GEAR PUMP
4
5
9
10
12
17
16
13
14
15
11
NOTE: If vehicle is equipped with High Flow Hydraulics
Kit, refer to High Flow Hydraulics Kit Gear Pump Service
later in this section.
NOTE: The Workman HDX and HDX--D gear pump in-
cludes a rear flange that will allow the installation of a
second pump section for the High Flow Hydraulics Kit.
The Workman HD gear pump does not have this type of
rear flange. Figure 28 illustrates both pumps.