HYDRAULICS
8I-47
SECTION 8I. LIFT/LOWER VALVE
GENERAL
The lift valve is used in conjunction with the charge
pump and lever to lift and lower the deck. The lift/lower
valve is a three position non-detent valve that is spring
centered to the neutral position. The valve is mechani-
cally actuated by moving the lift/lower lever. The valve
is mounted under the seat platform on the front right
side of the tractor (Figure 8I-1). Repairs to the lift/lower
valve are limited to replacing seals.
Figure 8I-1. Lift/Lower Valve Mounting
REMOVAL
1. Shut off the engine and remove the ignition key.
2. Unlatch the seat platform. Pivot the seat and seat
platform to the full upward position.
3. Thoroughly clean the lift valve, especially the area
surrounding the hydraulic hoses, tubes, and fit-
tings.
4. Tag and disconnect the hydraulic hoses and tubes
from the lift valve. Immediately plug the hoses,
tubes, and valve to prevent contamination of the
hydraulic system.
5. While supporting the valve, remove the two
mounting screws and lock washers from the valve
(Figure 8I-1).
6. Remove the valve from the mower.
INSTALLATION
1. Position the valve on the mounting surface.
2. Install the two mounting screws and lock washers
(Figure 8I-1).
3. Remove the plugs and, using the tags created
during removal, connect the hydraulic hoses and
tubes to the valve fittings.
4. Replace the hydraulic filter.
5. Start the engine and check valve operation. Check
for leaks and repair as necessary.
6. Pivot the seat and seat platform to the lower posi-
tion for normal operation. Latch into position.
Lift/Lower Lever
Lift/Lower Valve
Mounting Screws
8I
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