Toro Greensmaster 3120 Service Manual page 134

Removing the Traction Pump (continued)
Installing the Traction Pump
Hydraulic System: Service and Repairs
2. Read and adhere to the information provided in
Removing and Installing the Hydraulic System Components (page
3. Remove the gear pump; refer to
4. Disconnect the traction control cable ball joint (item
neutral arm. Loosen the cable adjusting jam nuts and position the traction
cable away from the pump assembly.
5. Disconnect the hydraulic hoses from the traction pump. Allow hoses to
drain into a suitable container. Plug hoses and cap fittings to prevent
contamination.
6. Remove the two (2) hex nuts (item
cap screws securing the pump hub to the rubber drive coupler.
7. Support the pump assembly and remove the two (2) cap screws and the
hardened washers securing the traction pump to the adapter plate. Remove
the traction pump from the machine.
8. If necessary, mark the hydraulic fitting location and orientation to allow for
correct assembly and remove the hydraulic fittings from the traction pump.
Remove and discard all O-rings from the hydraulic fittings.
Note: Record the position (depth) of the pump hub on the pump shaft prior
to removing the pump hub.
9. If necessary, remove the pump hub from the pump input shaft. Locate and
retrieve the square key.
10. If necessary, remove the traction cable support and bracket from the traction
pump.
Note: Inspect threads and sealing surfaces of hydraulic fittings and hydraulic
hose or tube connectors prior to installation. Replace any damaged or worn
fittings, hoses or tubes.
1. Lubricate and fit new O-rings onto gear pump hydraulic fittings. Install fittings
into pump openings making sure that fitting location and orientation is as
noted during removal. Tighten fittings as specified; refer to
Hydraulic Fittings (SAE Straight Thread O-Ring Fittings) (page
2. Install the traction cable support and bracket if previously removed.
3. If removed, secure the pump hub to the pump shaft:
A. Make sure that the pump shaft and the bore of hub are thoroughly
cleaned.
B. Position the square key to the pump shaft.
C. Apply medium strength thread locker to the threads of the set screws
used to secure the hub to pump shaft.
D. Apply anti-seize lubricant to the bore of the pump hub.
E. Install the pump hub to the position on the pump shaft recorded during
disassembly.
F. Tighten the pump hub set screws from 10 to 12 N∙m (90 to 110 in-lb).
4. Position the pump assembly to the adapter plate and align pump hub with
the rubber coupler. Secure the pump assembly to the adapter plate with two
(2) cap screws and hardened washers.
Removing the Gear Pump (page
24 in Figure
Page 4–88
General Precautions for
4–71).
4–82).
4 in Figure 56) from the
56), the flat washers and the
Installing the
4–10).
Greensmaster 3120
17230SL Rev C