HOIST AND COUNTERWEIGHT RT9130E SERVICE MANUAL
5-6 Published 08-25-09, Control # 077-04
Installation
1. Ensure the mounting plate and hoist pads are clean and
free from debris and the hoist has not been damaged
during handling.
2. With the hoist supported by a suitable lifting device,
position the hoist on the mount.
3. Check the hoist to boom alignment according to the
HOIST TO BOOM ALIGNMENT procedure in this
section.
4. Place a level between the boom pivot shaft bushings.
5. Place a level across the top of the hoist drum and
determine if the hoist is sitting in the same plane in
relation to the level positioned between the boom pivot
shaft bushings.
6. With the hoist level, check to determine if all the hoist
mounting pads are in contact with the mounting plate by
rocking the hoist.
7. Keeping the hoist level, use a feeler gauge to determine
the amount of gap existing between the pads and the
mounting plate.
8. Add shims to satisfy any existing gaps. Altering the shim
thickness to fit a tapering gap is acceptable. Install the
capscrews, washers, and nuts and torque 1427 to 1546
Nm (1053 to 1141 foot-pounds).
9. Remove the lifting device from the hoist.
10. Connect the hydraulic lines to the hoist ensuring the
proper lines are connected to the correct ports as
marked during removal.
11. Connect the electrical wires to the hoist hi speed
solenoid valve as marked during removal.
12. Connect the electrical wires to the hoist rotation indicator
sensor box as tagged during removal.
13. Install the cable, following the procedures outlined under
INSTALLING CABLE ON THE HOIST, in the Operator’s
Manual.
Functional Check
1. Attach a test weight to the hook and raise and lower the
load several times.
2. Check the hoist for smooth operation of the hoist motor
and brake system.
3. Ensure the hydraulic connections are secure and free
from leaks.
Preventive Maintenance
It is extremely important to be aware of the possibility that
deterioration of internal critical components within the hoist
reduction unit can occur. Hoist reduction units incorporate
planetary gears, multi-disc brake assemblies, and sprag
clutches which do not have an infinite life span. Although
these components have been designed to achieve long
service life, reliability can be substantially reduced by a
variety of influencing factors such as:
• High cycle operation.
• Operating in high ambient temperatures.
• High external contaminations, such as dusty or sandy
conditions.
• Level of maintenance.
The following should be carried out following instructions in
Section 9 - Lubrication and/or manufacturers instructions.
1. Every 40 hours of operation or weekly, check the hoist
oil level. Inspect for any oil leaks from the hoist gearbox.
2. Every 250 hours or 3 months, lubricate the cable
follower(s).
3. Every six months, have the hoist oil condition tested.
This will give advance warning of developing wear
patterns. Any signs of abnormal contamination should
be treated seriously and the internal components of the
hoist should be examined carefully, at the earliest
opportunity.
4. Every 1000 hours or 12 months, replace the oil in the
hoist. Remove the fill/check plug from the side of the
final drive assembly. Fill with AGMA EP-4 weight
lubricant until oil starts to flow out the plug hole.
5. Annually, check for correct function of the hoist brake by
conducting a high line pull load test, ensuring the brake
holds without creeping and that the hoist control is
correct. The function of the hoist brake should be
checked more often if abnormal operating conditions or
characteristics exist.
6. Every 10,000 hours or every ten years, it is
recommended that the hoist assembly be disassembled
and that all major components be examined for damage
and/or wear, i.e. gears, spline couplings, shafts, etc.
New components must be installed if any are found to be
worn or if there is evidence of heat or other damage. The
hoist should be reassembled using all new seals,
bearings, fasteners, washers, brake discs, brakes
stators, sprag clutch, and springs. A comprehensive
hoist line pull and load holding test must be conducted
following the repair work.
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