Checking The Hydraulic Lines And Hoses; Hydraulic System Test Ports - Toro 30868 Groundsmaster 4700-D Operator's Manual
Traction unit
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Also See for 30868 Groundsmaster 4700-D:
- Service manual (298 pages) ,
- Installation instructions manual (20 pages) ,
- Operator's manual (92 pages)
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Figure 53
1. Hydraulic lter
Figure 54
1. Hydraulic lter
4. Ensure that the filter mounting area is clean. Screw
the filter on until the gasket contacts the mounting
plate; then tighten the filter an additional 1/2 turn.
5. Start the engine and let it run for about two minutes
to purge air from the system. Stop the engine and
check for leaks.
Checking the Hydraulic
Lines and Hoses
Inspect the hydraulic lines and hoses daily for
leaks, kinked lines, loose mounting supports, wear,
loose fittings, weather deterioration, and chemical
deterioration. Make all necessary repairs before
operating.
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
•
Make sure all hydraulic fluid hoses and
lines are in good condition and all hydraulic
connections and fittings are tight before
applying pressure to the hydraulic system.
•
Keep your 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.
•
Seek immediate medical attention if fluid is
injected into skin.
Hydraulic System Test Ports
The test ports are used to test the pressure in the
hydraulic circuits. Contact your local Toro distributor
for assistance.
Test Port A (Figure 55 ), located on rear of filter
manifold, under right hand frame rail. Used to measure
the traction system charge pressure.
Figure 55
1. Test port A (Charge)
Test Port B (Figure 56 ), located on side of counter
balance manifold, under operators seat. Used to
measure the counter balance pressure applied to cutting
units for increased traction.
Test Port C (Figure 56 ), located on front of 2 wheel
drive/4 wheel drive manifold through front access
panel on operator platform. Used to measure the 4
wheel drive pressure applied to the rear axle (reverse
mode) and rear axle dynamic braking.
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