TM  10-3930-669-20 VISUAL INSPECTION (1) Start engine (TM 10-393069-10). (2) Depress  throttle  pedal  and  release  parking brake slowly. (a)   If parking brake is not fully disengaging, perform Step (3) below and go to Brake System Troubleshooting, Fault 3. (b)   If     parking     brake     fully     disengages, parking brake is OK. (3) Shut down engine. 2-335