TM 10-3930-653-14&P 4-6-2.  TROUBLE DIAGNOSES AND CORRECTIONS Condition Probable cause Corrective action Insufficient power Broken cam band. Replace. Broken or fatigued spring. Lift truck speed too Improper adjustment of cam spring. Adjust. slow (but lifting time Sticking of stabilizer piston. Clean, correct, or replace. is good, or hunting is accompanied). Lift truck speed too Incorrect adjustment of cam spring. Adjust. low (takes too much Fatigued cam spring. Replace. time for lifting). Too much time for Improper adjustment of cam spring. Adjust. lifting (lift truck speed is good). Lift truck speed Incorrect adjustment of cam spring. Adjust. too high Sticking of stabilizer piston. Clean, correct, or replace. Sticking of governor valve shaft. Clean, correct, or replace. Excessive repetition Improper adjustment of cam spring. Adjust. of hunting*(should be within Sticking of stabilizer piston. Clean, correct, or replace. three times, or within 9 seconds). Sticking of governor valve shaft. Clean, correct, or replace. *Sudden fluctuation of engine speed with vibration. 4-72