Groundsmaster 3505--D Hydraulic SystemPage 4 -- 35
Procedure for Cutting Deck Circuit Pressure
Test:
1. Make sure hydraulic oil is at normal operating tem-
perature.
2. Park machine on a level surface with the cutting units
lowered and off. Make sure engine is off and the parking
brake is engaged.
3. Read Precautions for Hydraulic Testing.
WARNING
Before disconnecting or performing any work
on the hydraulic system, all pressure in the
system must be relieved. See Relieving Hy-
draulic System Pressure in the General Infor -
mation section.
4. Remove plug from hydraulic manifold port (G1).
5. Install hydraulic pressure gauge with hydraulic hose
attached to the manifold port (G1).
CAUTION
Keep away from decks during test to prevent per-
sonal injury from the cutting blades.
6. Start engine and move throttle to full speed (3050 +
50 RPM). Engage the cutting units.
7. Watch pressure gauge carefully while mowing with
the machine.
8. Cutting circuit pressure should be from 1000 to 1500
PSI and will vary depending on mowing conditions.
9. Disengage cutting units. Shut off engine. Record test
results.
10.Relieve hydraulic system pressure (See Relieving
Hydraulic System Pressure in the General Information
section). Disconnect pressure gauge with hose from
manifold block. Reconnect plug to the hydraulic man-
ifold port (G1).
1. Hydraulic manifold 2. Manifold port (G1)
Figure 20
2
1
1. Hydraulic manifold 2. Manifold port (G1)
Figure 21
1
2
Hydraulic
System
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