BENDIX TCH-001-050 Instrukcja Użytkownika Pobierz pdf

Technical Bulletin

Bulletin No: TCH-001-050 Effective Date: 10/31/02 Cancels: N/A Page: 1 of 1

Subject:

OVERRIDING THE D-2 GOVERNOR

Bendix

Tu-Flo

550 and Tu-Flo

750 compressors are designed to operate using Bendix D-2 or D-2A

governors to maintain the correct air brake system pressure.

The governor controls when the compressor runs loaded (building air mode) or unloaded (not building

air mode). In the unloaded mode, part of the governor’s function is to apply a controlled amount of

pressure against the unloader pistons in the compressor head.

Use of non-Bendix valves to override (or instead of) the Bendix D-2 governor can cause incorrect

pressure to be applied to the unloader pistons and result in broken compressor inlet valves. Broken inlet

valves may puncture the compressor pistons, forcing compressed air back into the compressor, through

the compressor flange and into the engine crankcase.

The installation of any valve to override the D-2 governor control is not recommended without prior

Bendix approval. We recommend using only genuine Bendix governors.

Reference Documents

SD-01-333 Service Data Sheet for Tu-Flo 550 compressor.

SD-01-344 Service Data Sheet for Tu-Flo 750 compressor.

SD-01-503 Service Data Sheet for D-2 governor.

D-2A Governor

Tu-Flo 750

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BENDIX TCH-001-050 Instrukcja Użytkownika