Toro Reelmaster 3100-D Service Manual page 165

Removing the Gear Pump (continued)
Installing the Gear Pump
Reelmaster ® 3100-D/3105-D
20252SL Rev A
4. Drain the hydraulic fluid from hydraulic tank by disconnecting the suction
hose from the barbed fitting in the bottom of the gear pump. Drain tank into
a suitable container.
5. Label the hydraulic hoses and fittings on gear pump for assembly purposes.
g345926
1. Piston pump/hydrostat case drain
6. Disconnect the hydraulic hoses connected to the hydraulic fittings on the gear
pump. Allow hoses to drain into a suitable container. Plug hose openings to
prevent contamination.
Note: A case drain exists in the piston pump/hydrostat and a suction port is
near the input shaft of the gear pump
removed from the piston pump, plug piston pump case drain hole to prevent
draining the piston pump.
7. Remove both cap screws and flat washers securing gear pump to the piston
pump. Separate gear pump from the piston pump. Locate and retrieve
O−ring. Plug openings of gear pump to prevent contamination.
8. If hydraulic fittings are to be removed from gear pump, mark fitting orientation
to allow correct assembly. Remove the hydraulic fittings and O−rings from
the gear pump as needed. Discard removed O−rings.
1. If fittings were removed from gear pump, lubricate and place new O−rings
onto fittings. Install fittings into pump openings using marks made during the
removal process to properly orientate fittings. Tighten fittings (see
the Hydraulic Fittings (SAE Straight Thread O-Ring Fittings) (page
2. Make sure that the mounting and O−ring sealing surfaces on the gear pump
and piston pump are clean.
3. Apply clean hydraulic fluid to gear pump flange O−ring. Place the O−ring on
the gear pump.
Figure 74
2. Gear pump suction port
(Figure
Page 5–89
74). When the gear pump is
Installing
5–8)).
Hydraulic System: Service and Repairs