TM 10-3930-669-20 3.  PIVOT CYLINDER DOES NOT OPERATE OR OPERATES SLOWLY (CONT). KNOWN INFO Lift, shift, and Tilt cylinders operate. Pivot cylinder pins OK. Hydraulic hoses to pivot cylinder OK. Pivot control cable OK. Stack valve OK. POSSIBLE PROBLEMS Pivot cylinder faulty. Pivot shaft bearings faulty. KNOWN INFO Lift, shift, and tilt cylinders operate. Pivot cylinder pins OK. Hydraulic hoses to pivot cylinder OK. Pivot control cable OK Stack valve OK. Pivot cylinder OK. Pivot shaft bearings OK. POSSIBLE PROBLEMS TEST OPTIONS Pivot cylinder test. REASON FOR QUESTION If pivot cylinder Is faulty, pivot cylinder will not operate or will operate slowly.  if pivot cylinder is OK, pivot shaft bearings are faulty. TEST OPTIONS Verify repair. REASON FOR QUESTION If pivot cylinder operates normally, fault has been corrected. 2-442