Textron JACOBSEN GP400, Technical/Repair Manual

Page: 246 / 354

6-54 4252490-Rev A
HYDRAULICS
6
!
WARNING
NOTICE
5. Clean all parts using clean solvent, and dry using
compressed air.
6. Inspect all parts for excessive wear, cracks, broken
parts, and scoring of the cylinder barrel, piston, and
rod.
Assembly Notes
NOTICE
• Use a new seal kit during assembly.
• Lubricate O-rings, rod seal, and wiper with clean
hydraulic oil before assembly.
• Assemble lift cylinder by reversing the order of
disassembly.
Left and Right Front Lift Cylinders
Removal and Installation
See Figures 6-65 and 6-66.
NOTE
The left lift cylinder is shown; the right lift cylinder is
similar.
!
CAUTION
1. Lower the cutting units.
2. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
3. Remove lower floorboard panel. (See “Floorboard
Assembly” on page 9-17.)
Figure 6-65
NOTES
• Label all hydraulic hoses and tubes before
disconnecting to ensure correct installation.
• Close all openings with caps or plugs to prevent
contamination.
4. Disconnect hydraulic hoses (2 and 4) from fittings
(1 and 3).
Use appropriate eye protection when using
compressed air for cleaning or drying purposes.
Compressed air can cause serious personal
injury. Use safety reduction valves to reduce the
air pressure to a safe level before use.
During repair of the cylinder, use extreme care
not to damage the barrel, piston, rod, and sealing
surfaces of the cylinder.
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.
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
Care must be taken to avoid damaging the
surface of the cylinder rod during removal and
installation.
TN3794
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1
2
3