6-72 4203780 First Edition
HYDRAULICS
6
Disassembly Notes
NOTICE
• Drain oil from lift cylinder.
• Remove fittings from lift cylinder.
• Remove rod guide from the barrel.
• Remove nut.
• Remove piston and rod guide from the rod.
• Remove O-rings, backup rings, seals, and rod wiper
from piston and rod guide.
• Clean all parts using clean solvent, and dry using
compressed air.
• Inspect all parts for excessive wear, cracks, broken
parts, and scoring of the cylinder barrel, piston, and
rod.
• Replace parts as needed.
Assembly Notes
NOTICE
• Use a new seal kit during assembly.
• Lubricate O-rings, seal, and rod wiper with clean
hydraulic oil before assembly.
• Assemble the lift cylinder by reversing the order of
disassembly.
• Torque nut to 50 lb-ft (68 N·m).
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 (Jacobsen PN 4137138)
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