PB_663
Service Bulletin Details
Public Details for: PB_663
As a product improvement, pierce will be changing coolant probes from a contact probe to a capacitive sensor.
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Title: Engine Coolant Probe Update Number: PB_663 Release Date: 11/06/23 Revision Number: Not Applicable Revision Date: Not Applicable Chassis Type: Custom Chassis Component Description: Coolant Probe Parts: See Table Below Subject: As a product improvement, Pierce will be changing coolant probes from a contact probe to a capacitive sensor. Description: Previous engine coolant probes used a direct contact sensor with two probes directly in contact with the coolant when full. These contacts are subject to scaling deposits which can eventually cause an erroneous reading of the coolant fluid level. The new coolant probe senses the presence of coolant by a capacitive means. The electronics are not in direct contact with coolant, providing enhanced protection against scaling deposit failures. Original Part Number 3569716 Original Item Description SEND, LOW COOLANT PROBE 1/4" New Part Number 63-2169 New Item Description SEND, LOW COOLANT PROBE .25 NPT If any additional support is needed, please open a technical support incident on Pierceparts.com. Pa g e 1 o f 1