4.2.8 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. The A17.1 Code does allow for dumbwaiters the use of wood or wood and
metal bolted together for guide rails. It also allows the use of the same set of guides for both car
and counterweight and doweled joints. 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 that 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.
4.2.9 Car Top
The inspector should check to see that the car top an associated equipment have been cleaned.
A clean installation eliminates a fire hazard, increases the operating life of the equipment, and
assures good operation.
4.2.10 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
4.2.11 Car-Leveling Devices
Examine fastenings and clearances of car-leveling devices, including cams and vanes located
in the hoistway.