Priming The Hydraulic Pumps; Use The Following Procedure To Prime The Hydraulic Pumps - Toro Z Master 7500-D Series Service Manual

Priming the Hydraulic Pumps

When the hydraulic system is flushed, the hydraulic system is charged, or the hydraulic components are installed,
it is important to properly prime the hydraulic pumps. The hydraulic pump priming ensures that the gear pump and
piston (traction) pump have sufficient fluid during initial start-up and running. The pumps can be primed by using a
remote starter switch to crank the engine which allows the pumps to prime.

Use the Following Procedure to Prime the Hydraulic Pumps:

1. Ensure the key switch is in the OFF position and the key is removed from the key switch.
2. Check the hydraulic fluid level in the hydraulic reservoir and add correct quantity of fluid if necessary. Refer to
the operator's manual.
NOTE: A blue wire connects to the starter motor solenoid B+ terminal (Figure 13). It is not necessary to
remove this blue wire from the solenoid terminal for hydraulic pump priming.
3. Connect the remote starter switch electrical leads to the starter motor solenoid B+ terminal and positive post of
the battery.
4.Engage the remote starter switch and crank the starter for 30 seconds to prime the hydraulic pumps. Wait for 30
seconds to allow the starter motor and starter solenoid to cool. Repeat the cranking procedure for the second
time.
5. Disconnect the remote starter switch leads from the starter motor solenoid terminal and positive post of the
battery.
Z Master 7500-D Series Service Manual
March 2018 - Digital Edition
DRIVE
C
A
Figure 13
A. Starter Motor C. B+ Terminal
B. Starter Solenoid
B
7-15
Table of Contents