117364 4-7 REV B
Checking the Deck Lift Circuit Pressure
Equipment required:
Hustler
®
Pressure Test Gauge Kit, part number
601661
Use this procedure when checking the relief setting of the
deck lift circuit.
1. With an operator on the seat, place the steering control
levers in the park brake position, start the engine, and
lower the main deck and side decks.
2. Shut the engine off.
3. Place an oil pan under the hydraulic lift manifold block.
4. With an operator on the seat, start the engine, and cycle
the side decks up and down several times to bleed the air
from the system. Shut the engine off.
5. Remove the gauge port cap at the rear of the hydraulic lift
manifold block. Figure 4-18
6. Select the proper hose and 2000 psi gauge from the
Pressure Test Gauge Kit (601661). Attach the gauge to
the hose. Attach the hose to the gauge port. Figure 4-19
& Figure 4-20
7. Set the throttle to full throttle and hold the side deck lift
switch in the down position and read the gauge. The
system pressure should read 800 psi. Figure 4-20
8. If the pressure is not at 800 psi, loosen the jam nut, and
turn the relief valve the proper direction until 800 psi is
reached. When the correct pressure is reached, tighten the
jam nut. Figure 4-21
9. Shut the engine off.
10. Disconnect the hose and gauge and screw the gauge port
cap back onto the gauge port and tighten. Figure 4-18
11. Remove the oil pan.
12. Clean up any oil spill.
13. Top off the hydraulic oil reservoir as needed.
Test Procedure for DDC20 Pump
Equipment required
Hustler
®
Pressure Test Gauge Kit, part number
007898
Figure 4-18
Hydraulic lift
manifold block
Gauge
port cap
Figure 4-19
Figure 4-20
Figure 4-21
Pressure
gauge
showing
800 psi
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