Service Manual

Groundsmaster 7200/7210Hydraulic System Page 4 – 78
Gear Pump
1. Transmission assembly
2. Coupler
3. O–ring
4. O–ring
5. Hydraulic fitting
6. O–ring
7. Hydraulic hose (output)
8. Cap screw (2 used)
9. Lock washer (2 used)
10. O–ring
11. Hydraulic fitting
12. Hose clamp
13. Hydraulic hose
14. Hydraulic hose (suction)
15. O–ring
16. Hydraulic fitting
17. O–ring
18. Gear pump
Figure 94
FRONT
RIGHT
10
12
13
14
11
8
9
7
6
2
1
3
5
4
15
16
17
18
20 to 26 ft–lb
(28 to 35 N–m)
20 to 26 ft–lb
(28 to 35 N–m)
35 to 43 ft–lb
(48 to 58 N–m)
Removal (Fig. 94)
WARNING
Before disconnecting or performing any work on
the hydraulic system, all pressure in the system
must be relieved. See Relieving Hydraulic System
Pressure in the General Information section.
1. Park machine on a level surface, lower cutting deck
(or implement), stop engine, engage parking brake and
remove key from the ignition switch.
2. Remove operator seat and seat base (see Operator
Seat Removal in the Service and Repair section of
Chapter 6 – Chassis).
3. Drain hydraulic oil from hydraulic tank.
4. Thoroughly clean hydraulic hose ends and fittings on
gear pump and hydraulic tank to prevent hydraulic sys-
tem contamination.
5. Label all hydraulic hoses and fittings for assembly
purposes.
6. Disconnect hydraulic hoses from fittings on the hy-
draulic tank and gear pump (Fig. 95). Allow hoses to
drain into a suitable container. Install clean plugs in hose
and fitting openings to prevent system contamination.
7. Remove parking brake handle from machine to allow
hydraulic tank repositioning (see Parking Brake Assem-
bly in the Service and Repairs section of Chapter 6 –
Chassis).
8. Remove reservoir support that secures hydraulic
tank to machine (see Hydraulic Tank Removal in this
section). Move hydraulic tank toward front of machine to
allow clearance for gear pump removal.
9. Support the gear pump to prevent it from falling dur-
ing removal.
10.Remove two (2) cap screws and lock washers that
secure gear pump to the transmission.