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STAIRWAY AR 3534208 - Caterpillar

3534208 STAIRWAY AR Caterpillar parts 993K STAIRWAY
Alternative (cross code) number:
Caterpillar 3534208 STAIRWAY AR

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Compatible equipment models: 3534208:

WHEEL LOADER  993K   Caterpillar
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Electric jacket water heaters that have failed.There are three main causes for premature failures of these elements: ...All air is not bled from the system after a replacement....Cooling passages are blocked preventing proper coolant flow away from the element. Steam pockets then develop around the element causing failure....Incorrect power voltage is applied to the element. For example: 240 Volts to a 120 Volt element.
When removing a failed element, look for signs of overheating such as: ...A hole melted in the case. See illustration....Soot is present on the case and can be wiped off with the finger (or shop towel)....Also notice if the coolant level shows on the element below the melted case....A bad connection at the element-to-cord will show as a melted or discolored connector pin and can also cause the element to burn open.
An open element that has given its expected service life and has none of the above signs was working correctly. When a replacement lasts only a few hours and shows overheating, look for one or more of the previous causes. The element is not at fault.

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Caterpillar parts catalog
993K Wheel Loader Z4Z00001-UP (MACHINE) POWERED BY C32 Engine
993K Wheel Loader Z4D00001-UP (MACHINE) POWERED BY C32 Engine

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