Blue Giant BG ZERO, Owner'S Manual

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8-3.2. Repair
CAUTION: To prevent damage, use proper pipe
clamp vise. The cylinder will be distorted
if the vise is tightened too much.
1. Secure the lift cylinder in a vise, clamping lightly
at the base of the cylinder.
2. Remove gland nut ( Figure 8-2 ).
3. Remove dust seal from gland nut.
4. Pull out piston rod.
5. Remove snap ring and piston from rod.
6. Remove snap rings, seals and backup ring from
piston.
7. Coat all parts with hydraulic oil ( Table 2-2 ).
8. For assembly Install in reverse order of removal.
8-3.3. Installation
1. Install lift cylinder assembly in reverse order of
removal.
Figure 8-3 Lift Cylinder - Tray
8-4. LIFT CYLINDER - TRAY
8-4.1. Removal
1. Engage the emergency power disconnect switch
and turn off key switch.
WARNING:
Before attempting any replacement,
make certain power is disconnected.
CAUTION:
Hydraulic oil can damage parts. Wipe off
any oil immediately. Provide a container
under the line or fitting before
disconnecting from cylinder.
2. Raise the platform high enough to remove the six
screws and remove the front lower cover.
3. Remove eight screws and remove the front upper
cover.
WARNING: Support cylinder before performing the
following steps to prevent cylinder from
falling.
4. Remove the cotter pin and shaft from the bottom
of the cylinder.
5. Remove the cotter pin and shaft from the top of
the cylinder and make sure you support the
cylinder so that it does not fall out.
6. Carefully raise lift cylinder assembly up and out of
vehicle.
8-4.2. Repair
CAUTION: To prevent damage, use proper pipe
clamp vise. The cylinder will be distorted
if the vise is tightened too much.
1. Secure the lift cylinder in a vise, clamping lightly
at the base of the cylinder.
2. Remove the end cap.
3. Remove the snap ring, dust ring, seal, copper
sleeve, seal, oil seal and seal from the end cap.
4. Remove the rod seal, oil seal, piston and rod seal
ring from the base.
5. Coat all parts with hydraulic oil ( Table 2-2 ).
6. For assembly Install in reverse order of removal.
8-4.3. Installation
1. Install tray lift cylinder assembly in reverse order
of removal.
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