174 OPERA TION

Refer the following chart for suggested temperature ranges concerning the use various cold - weather accessories.

Caution

W inter eatments e NOT RECOMMENDED for vehicles which only operate intermittently cold climates. Sustained temperatur must below25°C ( - 13°F).

Caution

Never fully close the winterfr ont equipped with viscous fan

For more information winterfronts, please refer the Maintenance and Lubrication Manual (TS494) .

- BOARD SCALES (OPTIONAL)

your chassis equipped with optional T ractor Scale System, the following gauge will located the D Panel directly above the radio box.

C0029339

T ractor Scale Display

Y our chassis may equipped with optional T ractor Scale The A W5800 - board scale converts tractor and trailer suspension loads accurate - ground comparing empty and loaded axle group weights with empty and loaded suspension the scale can calibrated display accurate weights for any air suspension

For more information this optional feature, please refer the Air - W eigh Installation, Calibration and Operations Manual .

Coupling A Trailer

Position the tractor directly front the trailer .

Back the trailer slowly until the fifth wheel just contacts the trailer

Place the transmission neutral and apply the parking brakes.

Connect the trailer glad hands and electrical connector

Caution

Make sur e the trailer air lines and the trailer electrical cor d e operly supported they will not pinched caught while the tractor being backed under the trailer