may interfere with or prevent proper operation of the switch. Excessively worn car guide shoes
and worn limit switch rollers, combined" may cause cars to overrun their terminals. If the
equipment is in proper condition and sufficient overhead clearance exists, make a test of
top normal terminal stopping devices with empty car at rated speed. Repeat operation with
bottom normal terminal stopping devices. On each of these stops, the car should stop at or near
the terminal landing.
9.4.4 Car And Counterweight Guide Rails, Rail Fastenings, Car Crossheads, And Car Guiding
Examine the guide rails, paying particular attention to the condition of the surfaces and the
correct alignment of the joints. Repeated operation of the car safety or improperly adjusted or
loose car guide shoes that permit the safety jaws or block to run against the rail surfaces
frequently cause serious wear or scoring of the rails and the safety jaws or block. Where
sliding-type guide shoes are used, determine that rails are free of lint and dirt, and are adequately
but not excessively lubricated. Where roller guides are used, rails should be clean and dry
without lubricant. Check the rails to bracket, brackets to building construction, fishplates,
crosshead connections, and car guide shoe fastenings to determine whether they are sound and
tight, and that there are no missing bolts or guide clips. operate the car at a rated speed from one
terminal landing to the other, and determine whether there is excessive or irregular motion of the
car which may indicate that the car or counterweight guide rails are not properly aligned. If such
motion occurs and it is not due to loose or worn guide shoes, or rollers, a recommendation should
be made for correction of the rail alignment.
9.4.5 Car Top
The inspector should check to see that the car top and associated equipment have been
cleaned. A clean installation eliminates a fire hazard and definitely increases the operating life of
the equipment, in addition assuring good operation.
9.4.6 Covers And Guards
Another area to check when examining the car top is that all covers and guards are in place.
They are provided to prevent accidental contact with moving devices or exposed electrical
components. This protection is not being provided if the cover or guard is not properly mounted
9.4.7 Car-Leveling Devices
Examine fastenings and clearances of car-leveling devices, including cams and vanes located
in the hoistway.