MAINTENANCE INSTRUCTIONS
AB16EJ Plus Maintenance Manual 29
© Mar. 2023
12. If certain component is difficult to remove, check
that all nuts, bolts, cables, brackets, wiring, etc.
have been removed, and that adjacent components
are not blocking removal.
Components Disassembling and
Reassembling
When disassembling or reassembling a component, fol-
low the steps one by one. If the disassembly or assem-
bly of one component has not been completed, do not
proceed with another component. Always review the
disassembly or assembly operation to make sure noth-
ing is missing. No adjustments (unless recommended)
may be made without prior approval.
Storage
Please follow the recommendations below to ensure the
best performance of cylinders and avoid corrosion due
to long-term storage (indoor/outdoor):
• The machine should be stored in stowed position
with all tires adjusted to keep aligned.
• Fully raise and lower the platform and steer left and
right twice a week to lubricate the cylinders.
Scrap of Structural Parts
• When certain major structural part fails to meet the
requirements for safe use due to corrosion, wear
and other reasons, it should be repaired or rein-
forced; otherwise it should be scrapped.
• When certain stressed structural part is permanently
deformed and cannot be repaired, it should be
scrapped.
• When certain major stressed structural part loses
overall stability and cannot be repaired, it must be
scrapped.
• When certain structural part or weld is cracked, the
cause should be analyzed and reinforcing measures
should be taken as appropriate for the force and
cracks. Continued use is only allowed if the structur-
al part and weld meet the original design require-
ments, or they should be scrapped.
Pressure-fit Parts
When assembling pressure-fit parts, use anti-seize or
molybdenum disulfide-based compounds to lubricate
the mating surface.
Bearing
1. After a bearing is removed, cover it to avoid dust
and abrasives. Use non-flammable cleaning solvent
to clean bearings and allow them to dry in the
shade. Compressed air can be used, but do not ro-
tate the bearings.
2. If the races and balls (or rollers) have pits, notches
or burn marks, the bearing should be scrapped.
3. If the bearing is still serviceable, apply a coat of oil
and wrap it with clean paper (or wax paper). Do not
unwrap reusable bearings or new bearings until
they are ready for installation.
4. Before installation, lubricate new or serviceable
bearings. When pressing the bearing into the re-
tainer or bore, pressure should be applied on the
outer race. If the bearing is to be mounted to a shaft,
pressure should be applied to the inner race.
Gaskets
Check if the hole in the gasket is aligned with the open-
ing in the mating part. If a handmade gasket is required,
use gasket material or stock of equivalent material and
thickness. Make sure to cut a hole in the correct posi-
tion, as unsealed gaskets can cause serious system
damage.
Bolt Use and Torque Application
NOTICE
Self-locking fasteners such as nylon inserts and
thread locking nuts must not be reinstalled after
removal.
1. When reinstalling locking fasteners, a new replace-
ment should always be used. Use bolts with appro-
priate length. If the bolt is too long, it may be
pressed against the adjacent part before tightening
its head to the part to be mounted; If the bolt is too
short, it will not have enough threads to bite and se-
cure the parts. The replacement bolt must have the
same or equivalent size as the original bolt.
2. In addition to the specific torque requirements given
in this manual, standard torque values should be
used on heat-treated bolts, studs, and steel nuts in
accordance with recommended factory practice
(see Page 18, Fastener Torque Specifications).
Hydraulic Pipeline and Electrical
Wiring
When unplugging or removing hydraulic lines and elec-
trical wires from the machine, the hydraulic lines and
electrical wires and their sockets should be clearly
marked, so that their reinstallation will be correct.
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