Toro 30069 Operator's Manual page 40

through normal operation once the charge pump is
primed.
1. Disengage the PTO and set the parking brake.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3. Raise the rear of the machine up onto jack stands
high enough to raise the drive wheels off the ground.
4. Check the hydraulic fluid level.
5. Start the engine and move the throttle control to the
full throttle position. Move the speed control lever
to the middle speed position and place the drive
levers into the drive position.
If either drive wheel does not rotate, it is possible to
assist the purging of the charge pump by carefully
rotating the tyre in the forward direction.
Note: It is necessary to lightly touch the charge
pump cap with your hand to check the pump
temperature. If the cap is too hot to touch, turn off
engine. The pumps may be damaged if the pump
becomes too hot. If either drive wheel still does not
rotate continue to next step.
1. Socket head screw
6. Thoroughly clean the area around each of the charge
pump housings.
7. To prime the charge pump, loosen two hex socket
head capscrews (Figure 52) 1-1/2 turns only. Make
sure engine is not running. Lift charge pump housing
upward and wait for a steady flow of oil to flow out
from under housing. Retighten capscrews. Do this
for both pumps.
Note: Hydraulic reservoir can be pressurized to up
to 5 psi (0.35 bar) to speed this process.
8. If either drive wheel still does not rotate, stop and
repeat steps 4 and 5 on the respective pump. If
Figure 52
2. Charge pump cap
wheels rotate slowly, the system may prime after
additional running. Recheck hydraulic fluid level.
9. Allow unit to run several minutes after the charge
pumps are primed with drive system in the full speed
position.
10. Check the hydro control linkage adjustment. Refer
to Adjusting the Hydro Control Linkages.
Checking the Hydraulic Lines
Service Interval: Every 100 hours
Check the hydraulic lines and hoses for leaks, loose
fittings, kinked lines, loose mounting supports, wear,
weather and chemical deterioration. Make necessary
repairs before operating.
Note: Keep areas around hydraulic system clean from
grass and debris build up.
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• If hydraulic fluid is injected into the skin it
must be surgically removed within a few hours
by a doctor familiar with this type of injury.
Gangrene may result if this is not done.
• Keep body and hands away from pin hole leaks
or nozzles that eject high pressure hydraulic
fluid.
• Use cardboard or paper to find hydraulic leaks.
• Safely relieve all pressure in the hydraulic system
before performing any work on the hydraulic
system.
• Make sure all hydraulic fluid hoses and lines are
in good condition and all hydraulic connections
and fittings are tight before applying pressure to
hydraulic system.
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