1991: Volvo integral sleeper

March 2, 2011  | by: John Baxter

Volvo 1985 aerodynamic

In 1991, Volvo introduced a single-unit cab and sleeper.

Rather than bolting a separate structure made elsewhere to the back of an existing cab design, Volvo introduced in 1991 a cab and sleeper manufactured as a single unit in the same facility. While it was no longer possible to later remove the sleeper and convert the tractor to a day cab, the unit solved air and water leakage problems due to the complex seals required for separate units. The design also reduced weight, increased structural strength and provided a much wider opening to the sleeper, making it much easier for the driver to move from the cab to the sleeper.

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