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Holset Turbos, Model Information
Service Manuals and Maintenance Information
Below are the links to service information, service manuals, parts sheets and compressor maps for general use. In this information you can find part numbers, assembly/overhaul information and genuine Holset turbo diagnosis practices. As more information is becomes available it will be posted for general consumer use.
- Holset H1C, H1D, H1E and H2A Series Turbos
- Holset H2B, H2C, H2D, H2E and H2S Series Turbos
- Holset HE221W Series Turbos
- Holset HE341Ve Series Turbos
- Holset HE351CW Series Turbos
- Holset HE431V Series Turbos
- Holset HE551V Series Turbos
- Holset HE851 Series Turbos
- Holset HX20W Series Turbos
- Holset HX25, HX25W and HX27W Series Turbos
- Holset HX30, HX32, HX35 and HX40 Series Turbos
- Holset HX30, HX32, HX35, HX40W and HX38G Series Turbos
- Holset HX50 and HX55 Series Turbos
- Holset HX50W and HX55W Series Turbos
- Holset HX55V Series Turbos
- Holset HX60 and HT60 Series Turbos
- Holset HX60W and HT60W Series Turbos
- Holset HX80 and HX85 Series Turbos
- Holset HY30W Series Turbos
- Holset HY35W Series Turbos
- Holset HY40 Series Turbos
- Holset HY55V Series Turbos
- Holset WH1C and WH1E Series Turbos
- Holset WH2D Series Turbos
- H Service Data Sheet
- HE Service Data Sheet
- HX and HY Service Data Sheet
- VG Service Data Sheet
- Pre H Service Data Sheet
Holset's Service Material
This service material, provided by Holset is not to be reproduced, copied or re-posted to any personal or private website. It is available for downloading or viewing in html/pdf format to be used by Holset customers looking for service information. Any duplication for needs other than listed above is strictly prohibited without the expressed written consent of Holset Turbochargers.
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The Turbo
The purpose of a turbocharger is to compress the air flowing into the diesel engine, this lets the engine squeeze more air into a cylinder and more air means that more fuel can be added. The engine burns air and fuel to create mechanical power, the more air and fuel it can burn the more powerful it is.
In simple terms, a turbocharger comprises a turbine and a compressor connected by a common shaft supported on a bearing system. The turbocharger converts waste energy from an engine’s exhaust gases into compressed air, which it pushes into the engine. This allows the engine to burn more fuel producing more power and improve the overall efficiency of the combustion process.
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