Big Joe EZ30, Operation, Maintenance, Repair Parts List

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BL-EZ30-0815 - 07-28-2019 9-5
9-3.4. Lift Cylinder
9-3.4.1.Removal
1. Lower forks fully.
2. Turn on the key switch (20, Figure 12-20 ) and
emergency disconnect (17).
3. Remove the upper compartment covers as
described in paragraph
5-2.
4. Ensure that hydraulic pressure has been relieved
from the lift circuit. Disconnect the hydraulic line
from the lift cylinder.
5. Remove screw (6, Figure 9-2 ) and washers (5)
and disconnect hose (8) from cylinder (2).
6. Remove screw (12, Figure 12-12 ) securing the
cylinder to frame.
WARNING: Frame is heavy. Use care while securing
and lifting in order to prevent injury.
7. With suitable hoist, carefully raise frame (8)
slightly so the cylinder can be removed.
9-3.4.2.Repair (Up to Serial # E2017219)
1. Secure the lift cylinder in a vise, clamping lightly
at the base of the cylinder.
2. Remove screw (8, Figure 9-4 ) and support (9).
3. Unscrew gland nut (4) from body (5).
4. Remove wiper (2) and O-ring (3) from gland nut
(4).
5. Withdraw the cylinder rod (1) from body (5).
6. Remove guide ring (6) and seal ring (7) from rod
(1).
NOTE: If the cylinder body (5) or piston rod (1) are
damaged, the entire lift cylinder must be
replaced.
7. Replace guide ring (6), seal ring (7), wiper ring (2)
and O-ring (3).
8. Coat all parts with hydraulic oil ( Table 3-2 ).
9. Install new guide ring (6) and seal ring (7) on rod
(1).
10. Insert piston rod (1) into body (5).
11. Install wiper (2) and O-ring (3) in gland nut (4).
12. Install gland nut (4) in body (5).
13. Install support (9) and screw (8).
Figure 9-4 Lift Cylinder
(Up to Serial # E2017219)
EZ30-16