caution - Toro
caution - Toro
caution - Toro
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Procedure for Cutting Deck Manifold Relief<br />
Pressure Test<br />
1. Make sure hydraulic oil is at normal operating temperature<br />
by operating the machine for approximately 10<br />
minutes. Make sure the hydraulic tank is full.<br />
2. Park machine on a level surface with the cutting deck<br />
lowered and off. Make sure engine is off and the parking<br />
brake is engaged.<br />
CAUTION<br />
Prevent personal injury and/or damage to equipment.<br />
Read all WARNINGS, CAUTIONS and Pre<strong>caution</strong>s<br />
for Hydraulic Testing at the beginning<br />
of this section.<br />
3. Locate deck manifold to be tested (Fig. 34). Disconnect<br />
hydraulic hose at deck manifold port (M1).<br />
NOTE: An alternative to using manifold port (M1) would<br />
be to disconnect the inlet hydraulic hose at deck motor.<br />
4. Install tester with pressure gauges and flow meter in<br />
series with the the disconnected hose and hydraulic<br />
manifold port (M1) (or motor inlet if hose was disconnected<br />
at deck motor).<br />
5. Make sure the flow control valve on tester is fully<br />
open.<br />
6. After installing tester, start engine and run at idle<br />
speed. Check for hydraulic leakage and correct before<br />
proceeding with test.<br />
11.If specification is not met, adjust or clean relief valve<br />
in deck manifold port (RV1). Adjust relief valve as follows:<br />
NOTE: Do not remove valve from the hydraulic<br />
manifold for adjustment.<br />
A. Remove cap on relief valve with an allen wrench.<br />
B. To increase pressure setting, turn the adjustment<br />
screw on the valve in a clockwise direction. A<br />
1/8 turn on the screw will make a measurable change<br />
in relief pressure.<br />
C. To decrease pressure setting, turn the adjustment<br />
screw on the valve in a counterclockwise direction.<br />
A 1/8 turn on the screw will make a measurable<br />
change in relief pressure.<br />
D. Install and tighten cap to secure adjustment. Recheck<br />
relief pressure and readjust as needed.<br />
12.Disconnect tester from manifold and hose. Reconnect<br />
hydraulic hose that was disconnected for test procedure.<br />
RIGHT<br />
FRONT<br />
1<br />
3<br />
TO OIL COOLER<br />
2<br />
Hydraulic<br />
System<br />
CAUTION<br />
Keep away from deck during test to prevent personal<br />
injury from the cutting blades.<br />
1. Center deck manifold<br />
2. LH wing deck manifold<br />
Figure 34<br />
3. RH wing deck manifold<br />
7. Operate engine at full speed (2870 RPM). Engage<br />
the cutting deck.<br />
8. Watch pressure gauge carefully while slowly closing<br />
the flow control valve to fully closed.<br />
FRONT DECK MANIFOLD SHOWN<br />
2<br />
1<br />
9. As the relief valve lifts, system pressure should be<br />
approximately:<br />
2900 to 3100 PSI (200 to 213 bar) for the center<br />
deck and LH wing deck<br />
1900 to 2100 PSI (131 to 144 bar) for the RH wing<br />
deck<br />
10.Disengage cutting deck. Shut off engine and record<br />
test results.<br />
Groundsmaster 4100--D<br />
Page 4 - 45<br />
3<br />
1. Deck manifold<br />
2. Relief valve<br />
Figure 35<br />
3. Relief valve cap<br />
Hydraulic System