2N-7782 [ROTO COIL]

Maintenance & Replacement

Inspection: Check during routine cylinder head overhauls or when servicing valve springs and guides.

Replacement: Swap out immediately if the internal spring mechanism fails to rotate the valve or shows physical binding and wear.

Category: Uncategorized Tags: CATERPILLAR, ROTO COIL

Description

The part 2N-7782 (Rotocoil)—often cross-referenced or updated to part family numbers like 8N-7782—is a valve spring rotocoil assembly used in Caterpillar heavy-duty diesel and natural gas engines. It rotates the valve slightly during operation to prevent carbon buildup and uneven wear