GENERAL INFORMATION AND MAINTENANCE
1-13
Fuel Filter
REMOVAL & INSTALLATION I See Figures 31. 32, 33. 34 and 35
REMOVAL & INSTALLATION
1. 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. 2. On the 6.5L diesel, position the cover with the air cleaner flexible hose off to the side. 3. Withdraw the element from the housing and discard it. 4. With a clean rag, remove any dirt or dust from the front cover and also from the element seating surface. To install: 5. Position and install the new filter element so that it seats properly in the housing. 6. On the 6.5L diesel, position the cover with the attached hose over the element and snap the retaining clips into place, 7. On early model vehicles, install the housing lid and tighten the wingnut(s) to about 18 inch Ibs. (2 Nm), 8. On late model vehicles, place the housing cover into position and engage the retaining clip.
WARNING Do not drive the vehicle with air cleaner removed. Doing so will allow dirt and a variety of other foreign particles to enter the engine and cause damage and wear. Also, backfiring could cause a fire in the engine compartment.
Carbureted Gasoline Engines FILTER IN CARBURETOR I See Figure 36 The fuel filter should be serviced at the interval given on the Maintenance Interval chart. Two types of fuel filters are used, a bronze type and a paper element type. Filter replacement should be attempted only when the engine is cold. Additionally, it is a good idea to place some absorbent rags under the fuel fittings to catch the gasoline which will spill out when the lines are loosened. 1. Disengage the fuel line connection at the intake fuel filter nut. Plug the opening to prevent loss of fuel. 2. Remove the intake fuel filter nut from the carburetor with a 1 in open end wrench (or adjustable wrench). 3. Remove the filter element and spring. 4. Check the element for restrictions by blowing on the cone end. Air should pass freely. 5. Clean or replace the element, as necessary. To install: 6. Install the element spring, then the filter element in the carburetor. Bronze filters should have the small section of the cone facing out.
Fig. 31 Loosen the wingnut and remove it from the air cleaner cover
Fig. 32 Removing the air cleaner cover
Fig. 34 On newer vehicles, lift up the air cleaner cover—1996 truck shown
Fig. 35 Remove the filter element—1996 truck shown
Fig. 33 Remove the old air cleaner element
87981P05
Fig. 36 In-carburetor fuel filter