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Publication Title | Model C30/C60/C65 Sticky bearing diagnosis

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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Telephone: (818) 734-5300 • Facsimile: (818) 734-5320 • Website:

Service Bulletin SB0080

Date: From: Subject:


December, 2006

Capstone Technical Support

Model C30/C60/C65 “sticky” bearing diagnosis.

All Capstone Model C30/C60/C65 MicroTurbine systems which have not been operated or started within a period of 6 months.

Safety Precautions

Only Capstone Authorized Service Providers (ASP’s) should open the MicroTurbine and other equipment connected to the MicroTurbine. The systems can include multiple sources of power. The fuel used by the MicroTurbine is flammable and explosive. Keep flames, cigarettes, sparks, and electrical arc-producing equipment away from the MicroTurbine. Observe and adhere to the Safety Instructions contained within the MicroTurbine documentation.


On the affected systems, as a result of storage, the engine bearings may develop a condition known as “sticky” bearings. This condition is characterized by the need of excessive force to rotate the engine. This Service Bulletin provides a procedure to manually rotate the engine rotor prior to starting a MicroTurbine that has been in storage for more than 6 months.

Recommended Tools

Model C30

• 10 mm socket wrench

• Capstone rotor turning tool (521627-100) Model C60/C65

• 8 mm hex wrench

• 4 mm T-handle hex wrench or the capstone rotor turning tool (521660-100)

XXXXX-001 Rev A (December 2006)

Page 1 of 4

Capstone Rotor Turning Tool (521627-100/521660-100)

This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the product specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.

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