Freightliner Truck 108SD: Weekly Post-Trip Inspection and Maintenance

After resetting the air intake restriction indicator during the daily pretrip inspection, check the indi- cator again with the engine off.

• Check an indicator with graduations to see if air restriction exceeds the value shown in Table 21.2.

• Check a go/no-go indicator without graduations to see if the colored bar shows through the clear window.

• If air restriction exceeds the maximum allowable value, operate the vehicle for one more day, making sure not to run the engine over rated rpm. Refer to the engine operation manual for more information on rated rpm for your engine.

• If air restriction exceeds the maximum value again, replace the air cleaner. For instructions, refer to Group 09 of the 108SD and 114SD Workshop Manual.

Check for water in the fuel/water separator, if equipped.

• Place a suitable container under the fuel/ water separator. Many states now issue fines for draining fuel/water separators onto the ground.

• Alliance/Racor Models: Turn the drain plug counterclockwise to open it. See Fig. 21.12.

• Stop draining fluid when fuel begins to drain out.

• Alliance/Racor Models: turn the drain plug clockwise to close it.

• DAVCO Models: close the drain valve. Install and hand-tighten the vent cap.

Inspect the steering components. See Fig. 21.14.

• Inspect tie rods, steering arms, and the drag link for signs of looseness (i.e., shiny spots or rust tracks).

• Check the steering gear mounting bolts and pitman arm nut for signs of looseness.

• Check the drag link nuts for missing cotter pins.

• Inspect the steering intermediate shaft and end yokes for excessive looseness or other damage.