Toro 08159SL Groundsmaster 5900 5910 Service Manual

Removal (Fig. 54)
Park  machine  on  a  level  surface,  lower  cutting
decks, stop  engine, apply parking  brake and remove
key from the ignition switch.
Installation (Fig. 54)
1.
1.  If fittings were removed from piston 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 Hydraulic Fitting Installation in  the General Infor-
mation section of this chapter).
2.
(see Hood Removal in the Service and Repairs section
of Chapter 7 -- Chassis).
Remove hood  to gain  access to hydraulic  pumps
2.
to allow safe installation of pump into machine.
Attachhoisttopistonpumptosupportpumpandalso
3.
Drain the hydraulic reservoir.
4.
pump removal, thoroughly  clean exterior of pump  as-
sembly including hydraulic hoses.
To prevent contamination of hydraulic system during
3.
Carefully lower piston  pump into the  machine and
position it to the flywheel coupling  housing on engine.
Support pump to make sure that side loads are not ap-
plied to flywheel coupling and that pump pilot is aligned
with coupling housing on engine. Support pump to pre-
vent it from shifting or falling while installing two (2) cap
screws and  washers securing piston  pump to engine
housing. Torque screws from 135 to 165 ft--lb (184 to
5.
traction pump solenoids. Disconnect wire harness con-
nectors from two (2) solenoids on pump.
For assembly purposes, label wire harness leads for
6.
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
Read the  General Precautions  for Removing  and
223
N--m).
4.
Install gear pump to piston  pump (see Gear Pump
Installation in this section).
7.
Label all hydraulic  hose connections for assembly
purposes.
5.
Using labels placed during  removal, correctly con-
nect two (2)  wire harness connectors to solenoids  on
traction pump.
8.
Put a drain pan below the pump assembly. Remove
allhydraulichosesconnectedtopistonandgearpumps.
Put plugs or caps on disconnected hydraulic hoses and
fittings to prevent contamination of the system.
6.
Remove plugs or caps from disconnected hydraulic
hoses. Install hoses to correct location on gear and pis-
ton pumps (see Hydraulic Hose and Tube Installation in
the General Information section of this chapter).
9.
Removal in this section).
Remove gear pump from machine (see Gear Pump
7.
8.
9.
Remove and replace hydraulic filters.
CAUTION
Fill hydraulic reservoir with correct oil.
Properly fill hydraulic system (see Charge Hydraulic
Make sure  piston pump  is properly  supported
before  removing the  pump  mounting  screws.
Piston pump assembly weighs approximately 86
pounds (39 kg).
System in this section).
10.Stop
hydraulic reservoir oil level.
engine and check for hydraulic oil leaks. Check
10.Attach
to allow safe removal of pump from machine.
hoisttopistonpumptosupportpumpandalso
11.Install hood (see Hood Installation inthe Serviceand
Repairs section of Chapter 7 -- Chassis).
11.
Remove two (2) cap screws and washers that retain
pumpassembly toflywheelcouplinghousing  onengine.
12.Carefully
slide pump assembly from housing on en-
gine and raise pump out of the machine.
13.If
hydraulic fittings  are to be  removed from piston
pump, mark fitting orientation to allow correct assembly.
Remove fittings from pump and discard O--rings.
Groundsmaster 5900/5910
Page 4 -- 75
Hydraulic System
Product Specification
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