(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).
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).