ARMY TM 9-2815-257-24 AIR FORCE TO 38G1-128-2 MARINE CORPS TM 10155A/2815-24/3 3-24 3-16.  AIR CLEANER ASSEMBLY MAINTENANCE  -  cont. 1. Do not clean air filter element.  Do not tap or hit to remove dirt.  If element is clogged or dirty, replace it. 2. Clean electrical connection studs on air heaters with a stiff wire brush. 3. Clean remaining components with cleaning solvent and a clean rag.  Allow to air dry. C.    INSPECTION. 1. Inspect cover (1, Figure 3-8), housing (2), adapters (6, 12), and air intake duct (15) for cracks, dents, or corrosion.    Replace  component  if  damaged  to  the  extent  that  it  will  effect  proper  operation  of  the  air filtering system. 2. Inspect air heaters (8) for obvious damage.  Replace if damaged is suspected. 3. Inspect gaskets (11, 17, 20) for cuts, tears, or deformation.  Replace if damaged or deformed. D.    INSTALLATION. 1. If removed, install air intake duct (15, Figure 3-8) and gasket (20) using two screws (19).  Install studs (18). 2. Install adapter (12) and gasket (17) using three nuts (16). 3. Install  adapter  (6),  air  heaters  (8)  and  gaskets  (11)  using  four  screws  (13)  and  washers  (14).    Connect electrical wire leads to heaters using nuts (9) and washers (10). 4. Install filter housing (2) using three screws (7).  Install filter element (5) into housing. 5. Install cover (1) onto housing (2) and secure using wing nut (3) and washer (4).