Frontwall-Mounted Air Cleaner, 4700 Models

4700 mm 09.02.002

Restriction of air flow through the air cleaner element is measured at the tap near the air cleaner outlet. Check the restriction indicator at the air cleaner or in the cab if the vehicle is equipped with a dash-mounted restriction gauge.

Vehicles may be equipped with either a manual-reset restriction indicator with graduations (Fig.), or a go/no-go restriction indicator without graduations (Fig.).

Fig. 1, Manual-Reset Air Restriction Indicator, Graduated

Fig. 2, Manual-Reset Air Restriction Indicator, Go/No-Go

  1. Inspect the air restriction indicator to see if air restriction equals or exceeds the maximum allowable restriction. For instructions, see the Western Star Driver's Manual.
  2. If necessary, replace the air cleaner element. For air cleaner element replacement instructions, see  of the Western Star Workshop Manual.
  3. Inspect the air cleaner housing for cracks, leaks, or any other damage. If the air cleaner housing or element is damaged, replace it.
  4. Reset the air restriction indicator.
  5. Each time the air cleaner housing is replaced, perform the procedures in MOP 13–01.
Note:
Parent topic: Air Cleaner Element Inspection and Replacement
Document Number: 0000120159
Manual Publication Date: 2024-05-23
Topic Publication Date: 2024-10-31