Toro 30868 Groundsmaster 4700-D - Checking the Hydraulic Lines and Hoses; Hydraulic System Test Ports

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 g ask et contacts the mounting
plate; then tighten the filter an additional 1/2 tur n.
5. Star t the engine and let it r un for about tw o min utes
to purg e air from the system. Stop the engine and
c hec k for leaks .
Checking the Hydraulic
Lines and Hoses
Inspect the h y draulic lines and hoses daily for
leaks , kink ed lines , loose mounting suppor ts , w ear ,
loose fittings , w eather deterioration, and c hemical
deterioration. Mak e all necessar y re pairs before
operating .
Hy draulic fluid escaping under pr essur e can
penetrate skin and cause injur y .
• Mak e sur e all h y draulic fluid hoses and
lines ar e in good condition and all h y draulic
connections and fittings ar e tight bef or e
appl ying pr essur e to the h y draulic system.
• K eep y our body and hands a w ay fr om pin
hole leaks or nozzles that eject high pr essur e
h y draulic fluid.
• Use cardboard or paper to find h y draulic
leaks.
• Safel y r eliev e all pr essur e in the h y draulic
system bef or e perf or ming an y w or k on the
h y draulic system.
• Seek immediate medical attention if fluid is
injected into skin.
Hydraulic System Test Ports
T he test por ts are used to test the pressure in the
h y draulic circuits . Contact y our local T oro distributor
for assistance .
T est P or t A ( Figure 55 ), located on rear of filter
manifold, under right hand frame rail. Used to measure
the traction system c harg e pressure .
Figure 55
1. Test port A (Charge)
T est P or t 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.
T est P or t C ( Figure 56 ), located on front of 2 wheel
dri v e/4 wheel dri v e manifold through front access
panel on operator platfor m. Used to measure the 4
wheel dri v e pressure applied to the rear axle (rev erse
mode) and rear axle dynamic braking .
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