PACCAR 579, 567 — Seat

SAFETY - Seat 1 What is the under hood air intake? The option for under hood intake is a switch on the dash that allows the operator to use air from under the hood in the event the air cleaner opening is blocked by snow or ice. which holds a door closed inside the air cleaner. Fully engaged, the door will open an air will enter from under hood instead of the opening on the side of the hood. Related concepts WARNING Do not let go of the hood while it closes. Close the hood in a controlled manner which requires hands firmly grasping the hood and feet on a sta- ble, non-slip, surface.

Failure to control the hood as it closes may result in death or personal injury WARNING Seat Do not open the under hood air door with hands. This door is held closed with a spring which may pull the door closed unexpectedly. Failure to comply may result in personal injury. For further information on features and adjustment of the seat, see the manufacturer's Service and Operation Manual included with the vehicle. WARNING Always ensure the hood hold open latch is engaged to keep the hood fully open any time anyone gets under the hood for any reason. Failure to do so may cause the hood to close uncon- trollably which may result in death or personal injury.

This seat has up to 10 different controls that maximize the driver's comfort. Lumbar (and bolster support if available) are provided for superior support to the back during operation. Lower support is standard and the optional functions include upper lumbar and bolster functions. Pressing on the “+” symbol of the button will add support in the area. Pressing the opposite side of the button will release pressure and will reduce support in the area. CAUTION Only operate the under hood intake air switch when outside temperatures are below 32° F (0° C). Engaging the un- der hood air intake while temperatures are above freezing may result in en- gine damage.

WARNING Before closing the hood, be sure the area is clear—no people or objects are in the way. Failure to do so may result in death or personal injury. The switch is directly wired to a solenoid on the air cleaner. This air solenoid (normally closed) will engage when signaled which will supply air to a piston. This air pressure will overcome a spring 24 Y53-6047-2HEN (03/18)