9-4.2. Repair; 9-4.3. Installation - Big Joe CB33 Manual

9-4.2. 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 gland nut.
3. Remove wiper and O-ring from gland nut.
4. Pull out piston rod.
5. Remove packing, ring and backup ring from pis-
ton rod.
6. Coat all parts with hydraulic oil
7. Install backup ring, ring and packing on piston
rod.
8. Insert rod in cylinder tube.
9. Install O-ring and wiper on gland nut.
10. Install gland nut in cylinder tube.

9-4.3. Installation

1. Position cylinder on inner mast and secure with
two screws, two lock washers and two flat wash-
ers.
2. Reconnect the tube to the bottom of the cylinder.
3. Position ram head and bracket and on cylinder
and secure with screw, lock washer, and washer .
4. Position lift chains over sheave, and secure lift
chain to the anchor at cylinder with clevis pin and
cotter pin.
5. Adjust the chains according to paragraph
6. Fill the hydraulic reservoir. Use hydraulic oil listed
in Table 3-2.
7. Reconnect the batteries and turn on the key-
switch.
8. Operate the lift and lower buttons to refill the
cylinder and lines with hydraulic oil.
9-8
(Table 3-2).
8-2.
9. Check level of hydraulic oil. If required, add
hydraulic oil to bring to proper level. Use hydraulic
oil listed in Table 3-2.
DP_0011
Figure 9-7 Free Lift Cylinder (Three Stage Mast)
BL-CB33-0115 - 03-01-2018