6-64 4203781 First Edition
HYDRAULICS
6
1. Remove all fittings from the lift valve.
2. Remove, inspect, and replace lift valve components
as needed.
3. Clean all parts using clean solvent, and dry using
compressed air.
4. Inspect all parts for wear or damage. Replace parts
as needed.
Assembly Notes
NOTICE
• Assemble the lift valve by reversing the order of
disassembly.
• Use a new seal kit during assembly.
• Lubricate all O-rings prior to assembly.
Right Deck Valve
Removal and Installation
See Figure 6-68.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Drain hydraulic oil tank. (See “Hydraulic Oil Tank—
Drain Procedure” on page 6-58.)
NOTE
The right deck valve is located behind the front cross
member.
3. Thoroughly clean the valve, especially the area
surrounding the hydraulic hoses, tubes, and fittings.
Figure 6-68
NOTE
Label connector before disconnecting to ensure correct
installation.
4. Disconnect electrical connector (3) from solenoid.
NOTES
• Label all hydraulic hoses and tubes before
disconnecting to aid in installation.
• Close all openings with caps or plugs to prevent
contamination.
5. Disconnect hydraulic hoses (1, 2, 6, and 7).
6. Support the deck valve (8).
7. Remove mounting screws (4) and washers (5).
8. Remove the deck valve (8).
Installation Notes
• Install the deck valve by reversing the order of
removal.
• Make sure new O-rings are in place before installing
hoses on fittings.
• Replace hydraulic oil return filter. (See “Hydraulic Oil
Return Filter” on page 6-67.)
• Refill hydraulic tank. (Refer to “Safety, Operation, and
Maintenance Manual” for oil specifications.)
• Start engine. Check hydraulic system for leaks.
Repair as necessary.
• Check hydraulic oil level and add if necessary.
It is important that all component parts are
absolutely clean, as contamination can result in
serious damage and/or improper operation.
Never use shop towels or rags to dry parts after
cleaning, as lint may clog passages. Dry parts
using compressed air.
Required Materials
• Seal Kit (Jacobsen P/N 558010)
• Detent Kit (Jacobsen P/N 5001612)
T
N
2
2
8
3
4 5
6
7
1
2
8
3
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