TM 10-3930-659-10 Table 2-1.  Preventive Maintenance Checks and Services (Con’t). LOCATION ITEM ITEM TO NOT FULLY MISSION NO. INTERVAL CHECK/ PROCEDURE CAPABLE IF: SERVICE 25 Before Parking a.  Check vehicle parking brake a.  Indicator  lights Brake by applying parking brake do not come on or and moving direction selector alarm does not lever to F  (Forward) and sound. speed range selector lever to fourth gear.  Engine stop and parking brake indicators should light and alarm should sound. CAUTION Perform  this  check  In  the  absolute  minimum time required to obtain  safe  results.    Damage to   the   drive   train   will   result   if   duration   of check Is excessive. b.  With engine running, direction b.  Parking brake selector lever set to F (For- does not hold ve- ward), and speed range se- hicle. lector lever in fourth gear, gradually increase engine speed to half throttle momen- tarily.  Decrease engine speed to normal idle.  Move direction selector lever to N (Neutral). EXTERIOR 26 Before Transmission Oil Level CAUTION DO NOT overfill transmission. Damage to transmission will result. DO  NOT  permit  dirt,  dust,  or  grit  to enter    transmission    oil    level    gage tube.    Internal  transmission  damage will     result     if     transmission     oil     Is contaminated. 2-26