Replacing The Traction Pump Drive Belt - Toro Z Master Z597 Service Manual

5. Remove the hydraulic pressure and return lines at
the fan hydraulic motor. Connect the flow meter as
shown (Fig. 217).
Note: If using a directional flow tester, be sure to
correctly connect hoses.
FAN
MOTOR
Fig 217
6. Before starting the engine make sure the hydraulic
lines are held away from moving parts and the
muffler. The pump used in this system is designed
to run at 1.6 to 1.7 gpm (6 to 6.4 lpm) at 3000 PSI
(20684 kPa) continuous pressure. Under little or no
restriction, you should measure 3 to 4 gpm (11 to 15
lpm) at full engine speed.
7. Make sure the restrictor valve is in the full "OPEN"
position. Start the engine. Allow at least 5 minutes
for the hydraulic system to reach operating
temperature. Run the machine at full speed. The
gauge should read approximately 3 to 4 gpm (11
to 15 lpm) under no restriction. Record the flow
reading.
Z Master Z597 Diesel Service Manual
HYDRAULIC SYSTEM
8. With the engine running at full rpm, carefully close
Caution: DO NOT operate the machine for an
FLOW TESTER
9. Remove the flow tester from the machine.
10. Re-install the rear heat shield.
11. Close the hood.
fan motor test
12. Reconnect the seat switch and lower the seat.
Replacing the Traction Pump Drive
Belt
Check the pump drive belt for wear after every 50 hours
of operation.
1. Tilt the seat forward and remove the front engine
the restrictor valve until 1500 PSI (10342 kPa) is
reached. There should be approximately 1 gpm flow
loss under pressure.
If flow drops more than 1 gpm (3.8 lpm), replace
the pump. If the pump falls within spec, replace
the motor or inspect the cooling system for other
component failure.
extended period of time at 1500 psi
(10342 kPa) system pressure. Hydraulic
temperatures can rise quickly under
pressure. Open the flow tester restrictor
valve, bring the engine to idle, and shut
the machine off.
Reconnect the hydraulic lines to the fan motor.
panel.
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