“4069RT” Service and Parts ManualMarch 2014
Page 3-8
LIFT CYLINDERS
L
IFT
C
YLINDERS
NOTE: Refer to Section 1 for seal replacement instructions.
Refer to Parts Section C and E for detailed parts list and illustration.
• Clean all fittings before disconnecting hoses.
• Tag hoses for proper reassembly.
• Plug all openings to prevent contamination.
The 4069 has two lift cylinders. This procedure covers removal of either cylinder
without removing the entire scissor stack.
1. Raise the scissor arm assembly and support using the maintenance lock.
2. Remove the support beam.
• Remove the upper and lower retaining rings.
• Remove the upper and lower nylon washers.
3. Disconnect hoses, wires and cables from the lift cylinders.
4. Wrap a lift sling of adequate capacity completely around the barrel of the lift cylinder.
Use a suitable lifting device to support the lift cylinder.
Attach the lifting device to the cylinder body. Lifting by the rod end will
cause the cylinder to extend.
5. Remove the upper retaining pin, cylinder mount pin, and two nylon washers.
6. Remove the lower retaining pin.
7. While supporting the cylinder, carefully remove the cylinder mount pin and two nylon
washers.
THE CYLINDER MAY SHIFT SUDDENLY WHEN THE PIN IS REMOVED.
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