Product Description

This component is a crankshaft oil seal used on specified Lycoming engines to retain engine oil around the crankshaft exit. It serves as a sealing element at the crankshaft to help contain lubricating oil within the engine and reduce external leakage at the front seal location.

0 1. Overview

The part is identified as Lycoming crankshaft oil seal 76940 and is supplied as a factory new OEM engine component. It is associated with crank oil seal service on Lycoming O-235 and O-290 series engines. Information with the part confirms that 76940 is a split-style crankshaft oil seal. One listing groups it with O-rings in the engine parts category and provides a nominal weight of 0.07 pounds and approximate overall dimensions of 3.38 by 3.38 by 0.5 inches for the packaged item. An alternate part number SL76940 is described separately as a crankshaft oil seal assembly for Lycoming engines, indicating a designated replacement option corresponding to this seal number.

0 2. Key Features

  • Crankshaft oil seal for Lycoming engines
  • Identified for use on Lycoming O-235 and O-290 engines
  • Split-style crankshaft seal configuration
  • Factory new OEM engine component
  • Associated alternate replacement part number SL76940
0 3. Specifications

Part Number: 76940
Description: Lycoming crankshaft oil seal
Engine Application: Lycoming O-235, Lycoming O-290
Seal Style: Split crankshaft oil seal
Product Category: Aircraft engine parts, O-rings
Approximate Weight: 0.07 lb
Approximate Dimensions: 3.38 in × 3.38 in × 0.5 in
Alternate Part Number: SL76940 (related replacement seal assembly)

FAQs

01. For which Lycoming engine models is crankshaft oil seal 76940 identified?

Crankshaft oil seal 76940 is identified for Lycoming O-235 and O-290 series engines.

02. What style of seal does Lycoming part 76940 use at the crankshaft?

Lycoming part 76940 is a split crankshaft oil seal.

03. How is part 76940 categorized in engine component groupings?

Part 76940 is categorized as an aircraft engine part within an O-rings group for Lycoming engines.

04. What are the approximate packaged dimensions of Lycoming crankshaft oil seal 76940?

The approximate packaged dimensions for Lycoming crankshaft oil seal 76940 are 3.38 inches by 3.38 inches by 0.5 inches.

05. Which alternate number is associated with a replacement for the 76940 crankshaft oil seal?

The alternate number SL76940 is associated with a crankshaft oil seal assembly that corresponds to part 76940.

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