Stellar Industries 28000 - Manual (Page 11)

7 Maintenance 7
Chapter 3 - Maintenance
WARNING - Read the Following before
performing any maintenance on the
crane.
1. Only authorized service personnel are
to perform maintenance on the crane.
2. Disengage the PTO before any service
or repair is performed.
3. Do not disconnect hydraulic hoses
while there is still pressure in those
components.
4. Before disconnecting hydraulic
components, place the boom on the
ground or have it supported, shut off the
engine, release any air pressure on the
hydraulic reservoir, and move pedals
and control levers repeatedly through
their operating positions to relieve all
pressures.
5. Keep the crane and service body
clean and free from grease build-up, oil
and dirt to prevent slippery conditions.
6. Perform all safety and maintenance
checks before each period of use.
7. Replace parts with Stellar Industries, Inc.
approved parts only.
8. Immediately repair or have repaired
any components found to be
inadequate.
Maintenance Procedures
1. Position the crane where it will be out of
the way of other operations or vehicles in
the area.
2. Be sure boom is lowered to the ground or
otherwise secured from dropping.
3. Place all controls in the off position and
secure operating features from
inadvertent motion.
4. Disconnect power source.
5. Relieve hydraulic oil pressure from all
hydraulic circuits before loosening or
removing hydraulic components.
6. Label or tag parts when disassembling.
Periodic Inspection
Periodic Inspection should occur while the
crane is in use. For the duration of the
usage, inspect the crane for all of the
following:
1. Loose bolts and fasteners.
2. All pins, bearings, shafts, and gears for
wear, cracks, or distortion to include all
pivots, outriggers, sheave pins, and
bearings.
3. Hydraulic systems for proper operating
pressure.
4. Main frame mount bolts.
5. Cylinders for:
A. Damaged rods.
B. Dented barrels.
C. Drift from oil leaking internally.
D. Leaks at rod seals or holding valves.
6. PTO drive line system for proper
alignment, lubrication, and tightness.
7. Hydraulic hose and tubing for evidence of
damage such as blistering, crushing, or
abrasion.
Daily Inspection
Daily Inspection should occur each day
before the crane is put into use. Each day,
inspect the crane for all of the following:
1. Hydraulic oil level.
2. Loose parts or damage to structures or
weld.
3. Cylinder movement due to leakage.
4. Hoses and gearboxes for evidence of oil
leaks.
5. Controls, including hand throttle for
malfunction or adjustment.
6. Truck hand brake operation.
7. All securing hardware such as cotter pins,
snap rings, hairpins, and pin keepers for
proper installation.
8. All safety covers for proper installation.
9. Cylinder holding valves for proper
operation.
10. Wire rope for broken wires, extensive
wear, distortion, and heat damage.