Figure 4-4. Top loading air cleaner access door bolt holes rework.

TB 9-2300-378-14

(3) Procedure (Fig. 4-4).

Figure 4-4. Top loading air cleaner access door bolt holes rework.

(a) Remove air cleaner filter element (para. 3-2a).

(b) Cover housing opening with tape and cardboard or a large cloth to prevent

metal chips and dirt from entering the filter area.

(c) Install fabricated drill guide in bolt hole (view A).

(d) Place fabricated drill stop on a No. 12 drill bit to limit depth to 1-7/16 inch.

Wrap tape around bit to hold stop in place (Fig. 4-3).

CAUTION

Do not drill hole through without drill stop installed or

damage to air cleaner precleaned tubes will result.

(e) Using a hand drill with the No. 12 drill bit and stop, carefully drill through

incompletely machined portion of hole (view B).

4-4