Toro Groundmaster 31900, Service Manual

Page: 146 / 355

Priming the Hydraulic Pumps
Whenever hydraulic fluid has been drained from the pumps (system drain, flush,
or pump removal/installation) it is important to properly prime the hydraulic
pumps. Priming the hydraulic pumps ensures that the gear pumps and piston
(traction) pump have sufficient fluid while charging the hydraulic system. The
pumps can be primed by using a remote starter switch to crank the engine which
allows the pump to prime; refer to
Remote Starter Switch (page 2–18) .
IMPORTANT
If the traction (piston) pump was rebuilt or replaced, make sure
the pump housing is at least half full of clean hydraulic fluid after
installation.
1. Make sure all hydraulic connections are properly tightened.
2. Set the key switch to the O
FF
position and remove the key from the key
switch.
3. Check the hydraulic fluid level in the hydraulic tank and add the correct type
and quantity of fluid if necessary; refer to the traction unit Operator’s Manual .
4. Remove the battery cover and raise the hood.
Note: A blue wire connects to the starter motor solenoid B+ terminal; refer
to Figure 46 . It is not necessary to remove this blue wire from the solenoid
terminal to connect the remote starter switch.
5. Connect the remote starter switch electrical leads to the starter motor
solenoid B+ terminal and positive post of the battery.
g301929
Figure 46
Starter B+ Terminal (typical)
1. Starter solenoid 2. Starter motor 3. B+ terminal
6. Connect the remote starter switch electrical leads to the starter motor
solenoid B+ terminal and positive post of the battery.
Hydraulic System: Service and Repairs Page 5–60 Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A