See Figures 1, 2, 3 and 4
The element should be replaced at the recommended intervals shown in the Maintenance Intervals chart later in this section. If your truck is operated under severely dusty conditions or severe operating conditions, more frequent changes will certainly be necessary. Inspect the element at least twice a year. Early spring and early fall are always good times for inspection. Remove the element and check for any perforations or tears in the filter. Check the cleaner housing for signs of dirt or dust that may have leaked through the filter element or in through the snorkel tube. Position a droplight on one side of the element and look through the filter at the light. If no glow of light can be seen through the element material, replace the filter. If holes in the filter element are apparent or signs of dirt seepage through the filter are evident, replace the filter.
REMOVAL & INSTALLATION
See Figures 5, 6, 7, 8 and 9
- On older model vehicles, loosen the wingnut(s) and lift off the housing cover. On newer model vehicles, unfasten the retaining clips and separate the two case halves.
- On the 6.5L diesel, position the cover with the air cleaner flexible hose off to the side.
- Withdraw the element from the housing and discard it.
- With a clean rag, remove any dirt or dust from the front cover and also from the element seating surface.
- Position and install the new filter element so that it seats properly in the housing.
- On the 6.5L diesel, position the cover with the attached hose over the element and snap the retaining clips into place.
- On early model vehicles, install the housing lid and tighten the wingnut(s) to about 18 inch lbs. (2 Nm).
- On late model vehicles, place the housing cover into position and engage the retaining clip.