Komatsu Part UNION 02781-00628

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Product Overview

The 02781-00628 UNION is a genuine Komatsu OEM replacement union fitting. Unions are straight-line connectors that join two sections of fluid line with the same thread type and sealing method on both sides — they allow hoses and tubes to be connected in series and disconnected for maintenance without modifying either connected component.

Part Number: 02781-00628 Part Name: UNION Part Type: OEM Komatsu Replacement Component Availability: In stock — ready to ship

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When to Replace

Replace the 02781-00628 when threads are damaged, galled, or stripped on either end; when the sealing surface is scored, pitted, or corroded; when cracks are visible on the union body; or when the hex flats are rounded from improper wrench use.

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Installation

1. Confirm 02781-00628 in your Komatsu catalog
2. Clean threads and sealing surfaces on both ends
3. Install new O-rings if the union uses face seals
4. Apply thread sealant only to tapered threads
5. Tighten to the specified torque
6. Pressure test and check for leaks

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Request a Quote

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