TM-5-5420-202-10

0071

TM 5-5420-202-10

INSPECTION/ACCEPTANCE AND REJECTION CRITERIA

NOTE

• Use the following procedure for either top-loading aluminum or armored air cleaners.

• Air cleaners are normally serviced by f eld maintenance after every 750 miles of vehicle

operation or quarterly, whichever occurs f rst. Dusty conditions, power loss, or excessive

black smoke may indicate the need for more frequent cleaning.

1. If air cleaner is equipped with restriction indicator, check to see if restriction indicator window (Figure 1, Item 5)

is clear or red. A clear window indicates normal condition. If indicator window is red, press indicator reset button

(Figure 1, Item 1), rev engine to 2,400 RPM maximum, and then recheck indicator window. If window is still

red, shut off engine and notify f eld maintenance.

2. If air cleaner is equipped with restriction indicator (Figure 1, Item 3), measure amount of restriction created by

f lter element. The indicator measures amount of restriction (Figure 1, Item 2) created by f lter element in 5 inch

increments. Reset button (Figure 1, Item 4) is pressed only when f lter element is cleaned or replaced. A reading

of 30 inches or more indicates that f lter element must be cleaned. Shut off engine and notify f eld maintenance.

3. If restriction indicator window (Figure 1, Item 5) is red, or restriction indicator window (Figure 1, Item 3) is

reading 30 inches or more, but engine power loss is not indicated, continue operations until f rst opportunity for

servicing at next maintenance interval.

4. If restriction indicator window (Figure 1, Item 5) is red, or restriction indicator window (Figure 1, Item 3) is

reading 30 inches or more, and power loss is indicated, notify f eld maintenance.

5. If restriction indicator window (Figure 1, Item 5) is clear, proceed to step 6.

Figure 1.

Air Cleaner Indicator.

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TM-5-5420-202-10 - Page 455 of 535