Preventive Maintenance Schedule
Component
Inspection
Kinks
Wire Rope
Fraying
Bird caging
Tightness
Clamps
Cracks
Cracks
Load Hook
Swivel
Hook Latch
Cracks
Swivel
Reeve Block
Hook Latch
Hardware
Pulley
Hardware
Trolley Body
Suspension
Trolley Wheels
Kit
Hook Mount (Optional)
Safety Cable (Optional)
Smooth operation
Lubrication
Balancer
Wear
Fittings
Tubing
Controls
Handles
Manifold/Regulator
Brake Rods
Bearing
Z-Brake
Brake Ring
Brake Spring
Engagement Pin
Engagement Plate
Z-Stop
Housing
Fittings
# Torque check clamps at 7.5 ft. lb. (1.04 kg/m)
$ Torque check clamps at 4.3 ft. lb. (0.6 kg/m)
54072541_ed12
Criteria for Operation
No visible kinks on entire length.
No visible fraying on entire length.
No visible separations on entire length.
Clamps do not slide on wire rope. Clamps
are tight.
No visible cracks.
No visible cracks.
Smooth operation and free rotation.
Positive locking of latch.
No visible cracks.
Smooth operation and free rotation.
Positive locking of latch.
Center pulley bolt for full engagement.
Smooth operation when in motion.
No loose or missing hardware.
Aluminum–no visible cracks. Steel–no visible
broken welds.
Smooth operation with no binding.
Positive locking of latch.
No loose clamps. No damage or wear to
wire rope.
No binding or resistance in motion.
Piston and ball screw for grease.
Internal parts for excessive wear. Refer to
Balancer 'Cleaning and Inspection' section in
Maintenance Information Manual.
No visible cracks, leaks or looseness.
No visible bulges, cracks, kinks.
No visible cracks, leaks, looseness, or sticking
of buttons.
No visible cracks, leaks or looseness of
hardware.
Secured and straight.
Smooth rotation.
No gouges-Burrs removed.
Security. No deformation.
Fully engages plate-past notch in pin.
Secured to brake rods. Flat surface-no
warping.
Secured to end cover. No air leakage.
Secured. No air leakage.
Frequent
Daily
(Less than 6
(1st Operation
months/
of Shift)
semiannual)
X
X
X
X
X
X
X
X#
X
X
X
---
X
---
X
---
X
---
X
---
X
---
X
X
X
---
X
X
X
---
X
---
X
---
X
X$
X
X
---
---
---
---
X
---
X
---
X
---
X
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
EN
Periodic
(More than 6
months/
annual)
X
X
X
X#
X
X
X
X
X
X
X
X
X
X
X
X
X
X$
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
EN-11