1980-04-01

The CLBT9680 an Automatic Transmission for Off-highway Vehicles 800669

In the past few years, engine power ratings have steadily increased. To meet the demand of engine and vehicle manufacturers for a transmission to match these larger engines, Detroit Diesel Allison developed the CLBT9680 transmission. This transmission has been designed and developed to operate in rear-dump trucks up to 127 tonne (140-ton) capacity, and in bottom- or side-dump trucks up to 154 tonne (170-ton) capacity. In these applications the CLBT9680 has a power rating up to 1007 kW (1350 ghp). The transmission can also be approved with engines rated up to 1093 kW (1465 ghp) in special purpose installations such as oil field service equipment.
In this paper the transmission design and test development programs are presented. In addition, the extensive development programs are discussed relative to performance and reliability goals for the transmission.

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