Table of Contents
Advertisement
8-2.3. Installation
1.
Position pump/motor assembly (1,
reservoir (2) and install four screws (8), four lock
washers (9) and four flat washers (7).
2.
Reconnect hose (13) to pump/motor assembly
(1).
3.
Connect electrical leads to motor and solenoid of
pump/motor assembly (1).
4.
Fill the hydraulic reservoir. Use hydraulic oil listed
in
Table
2-2.
5.
Disengage the emergency power disconnect
switch (6,
Figure
11-8) and turn on key switch (3).
6.
Operate the lift and lower buttons to refill the
cylinder and lines with hydraulic oil.
7.
Check level of hydraulic oil. If required, add
hydraulic oil to bring to proper level. Use hydraulic
oil listed in
Table
2-2.
8.
Install the compartment cover as described in
paragraph
4-2.
8-3. Lift Cylinder (Telescopic)
8-3.1. Removal
1.
With the lift vehicle wheels securely blocked, raise
the platform approximately three feet and position
blocks or strong supports under inner frame (11,
Figure
8-3).
2.
Lower platform onto the support. Check that
arrangement is secure before proceeding.
3.
Engage the emergency power disconnect switch
(6,
Figure
11-8) and turn off key switch (3).
4.
Remove the compartment cover as described in
paragraph
4-2.
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 discon-
necting.
5.
Remove the lift chain as described in paragraph
7-4.
6.
Remove screw (8,
and flat washer (10).
7.
Remove bolt (6,
Figure
relief valve (4) and disconnect the hose (3) from
the bottom of lift cylinder.
8.
Manually push the cylinder rod down as far as
possible and remove ram head (12,
from cylinder (19).
BL-J1-0315 - 11-19-2019
Figure
8-1) on
Figure
8-3), lock washer (9),
8-2), two washers (5),
Figure
R7021
Figure 8-2 Hydraulic Lift (Telescopic)
WARNING: Support lift cylinder before performing
the following steps to prevent cylinder
from falling.
9.
Remove two nuts (23), two lock washers (24), two
flat washers (25) and U bolt (18).
10. Raise lift cylinder assembly (19) up and out of
vehicle.
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 (7,
3.
Remove wiper ring (8) and O-ring (9) from gland
nut (7).
4.
Pull out piston rod (1).
5.
Remove bearing (5) and bushing (4).
6.
Remove piston (2) and O-ring (3) from rod (1).
8-3)
7.
Remove guide ring (10) and seal (11) from piston
(2).
Figure
8-4).
8-3
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
