Figure 25. Air Intake Screen.

Maintenance of the M88A1
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52

Step 4. Unscrew the filter element wing nut (6) (figure 17 on page 39) and

remove the filter (7).

Step 5. Rinse away dust from the filter element with clean water at no more

than 10 psi. Do not rap the filter element against a hard surface as this

will dent it and damage the seals. The filter must not be washed more than

two times, since too much washing will destroy the paper element. Each time

it is washed, scribe the date in the metal base of the filter.

This

determines how many times it has been washed.

When it needs a third

washing, throw it away.

Never use compressed air to clear the filter

element except in an emergency. If it must be cleaned with compressed air,

use air at 100 psi or less, holding the air nozzle no closer than 1 inch

from the filter and blowing the dust from the inside out. (Use a lower air

pressure if possible.) High pressure might rip the element and allow dirt

to enter and damage the engine. Never use air on a wet filter element.

Step 6.

Soak the filter element in lukewarm water using a non-foaming

detergent for 15 minutes.

Do not use solvents, fuel oils or gasoline to

clean the filter element.

Step 7.

Shake the filter slightly before removing it from the water.

Step 8.

Rinse the filter with clean water at low pressure from the inside

out.