TM 10-3930-669-20 WARNING • Allow transmission to cool before performing maintenance.  If necessary, use insulated pads and gloves. • Transmission oil is slippery and can cause falls.  To avoid injury, wipe up spilled oil with rags. AUDIBLE INSPECTION (1) Start engine (TM 10-3930-669-10). (2) Listen to transmission for excessive noise. (a)    If    transmission    is    not    excessively    noisy, perform Step (3) below and go to Step 3 of this Fault. (b) If transmission is excessively noisy, fault not corrected.        Perform    Step    (3)    below.        Repeat procedure and notify Supervisor. (3) Shut down engine. VISUAL INSPECTION Check transmission oil level (TM 10-3930-669-10). (a)   If   transmission   oil   level   is   low,   add   oil   to correct level. (b) If transmission oil level Is OK, go to Step 4 of this Fault. 2-295