Gear Pump
9
5
4
10
11
8
12
13
1
4
2
1
9
21
17
20
27
(37
to 31 ft--lb
to 42 N--m)
19
18
RIGHT
1
6
3
7
FRONT
8
15
16
Figure 55
1.
2.
3.
4.
5.
6.
7.
Piston pump
Gear pump
8.
9.
O--ring
O--ring
15. Cap screw (2 used)
16. Flat washer (2 used)
17. O--ring
18. Hydraulic hose (reservoir)
19. O--ring
20. Tee fitting
21. Hydraulic hose (oil filter)
Hydraulic hose (tank suction)
Hydraulic hose (hydraulic manifold)
Hydraulic hose (steering valve)
Hose clamp
10. 90o hydraulic fitting
11. O--ring
12. O--ring
13. 90o hydraulic fitting
Hydraulic barb fitting
14. O--ring
Removal (Fig. 55)
Park machine on a level surface, lower cutting units,
stop engine, engage parking brake and remove key
from the ignition switch.
Installation (Fig. 55)
1.
IMPORTANT: Position gear pump to the piston
pump so that the gear pump suction port is facing
down.
2.
the gear pump (see Muffler Removal in the Service and
Repairs section of Chapter 3 -- Kubota Diesel Engine).
Remove muffler from the engine to gain access to
1. Install gear pump to the piston pump using Figure 55
as guide.
2.
Fill hydraulic tank with new hydraulic fluid (see Trac-
3.
Drain hydraulic oil from hydraulic tank (see Traction
tion Unit Operator’s Manual).
Unit Operator’s Manual).
3.
Install muffler to the engine (see Muffler Installation
4.
gear pump to prevent hydraulic system contamination.
Thoroughlycleanhydraulichoseendsandfittingson
intheServiceandRepairssectionofChapter3 -- Kubota
Diesel Engine).
WARNING
Before disconnecting or performing any work
on the hydraulic system, all pressure in the
system must be relieved. See Relieving Hy-
draulic System Pressure in the General Infor-
mation section.
5.
Label all hydraulic hoses and fittings for assembly
purposes.
6.
Remove gear pump from the piston pump using Fig-
ure 55 as guide.
Hydraulic System
Page 4 -- 86
Groundsmaster 3505--D
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