Classic Lodestar Large Frame - Limit Switch
|KEY #||PART #||DESCRIPTION||QTY|
|627-220||36656||Limit Switch Shaft & Gear Kit with Spring Loaded Switch||1|
|36641||Limit Switch Shaft & Gear Kit without Spring Loaded Switch||1|
|627-222||31636||Limit Switch Kit||1|
|627-231||36644||Limit Switch Bracket Sub-Assembly||1|
Hoist Limit Switch
A couple of hoist troubles are caused by a hoist limit switch:
- Hook does not respond to the control station or control device.
- Hook lowers but does not raise.
- Hook raises but does not lower.
- Hook fails to stop at either or both ends of travel.
- Hook stopping point varies.
It is always recommended to refer to CM hoist replacement parts user manual - Classic Lodestar for resolving the issues.
Caution: DO NOT use limit switches as routine operating stops. They are emergency devices only
Extended Limit Switch Parts
The parts listed above are for a standard 44 thread per inch limit switch shaft. The limit switch assembly can be modified with a 56 thread per inch shaft or a 64 thread per inch shaft to increase the maximum lift. The chart below shows the maximum lift of different models with each type of limit switch shaft assembly:
|MODEL||44 TPI SHAFT MAX LIFT||56 TPI SHAFT MAX LIFT||64 TPI SHAFT MAX LIFT|
|L & J||127'||162'||185'|
To replace the stock limit switch shaft with a 56 TPI shaft, you will need a 56 TPI Limit Switch Shaft, a Limit Switch Shaft Gear and a 56 TPI Limit Switch Nut. A 64 TPI Limit Switch Shaft is also available and requires a Gear and 64 TPI Nut to complete the assembly.