TM 10-3930-669-34 CHAPTER 15 HYDRAULIC SYSTEM MAINTENANCE Para Contents Page 15-1 Introduction................................................................................................................................. 15-1 15-2 Hydraulic Pump Replacement/Repair  . ..................................................................................... 15-2 15-3 Stack Valve Replacement/Repair............................................................................................... 15-12 15-4 Priority Valve Repair................................................................................................................... 15-28 15-5 Tilt Cylinder Repair..................................................................................................................... 15-30 15-6 Pivot Cylinder Repair.................................................................................................................. 15-38 15-7 Mast Primary Cylinder Repair..................................................................................................... 15-45 15-8 Mast Secondary Cylinder Repair................................................................................................ 15-51 15-9 Pivot and Shift Assembly Replacement/Repair.......................................................................... 15-55 15-10 Hydraulic Reservoir Replacement.............................................................................................. 15-69 15-11 Side Shift Cylinder Replacement/Repair . .................................................................................. 15-73 15-1. INTRODUCTION. This   chapter   contains   maintenance   instructions   for   removing,   replacing,   repairing,   and   installing   hydraulic   system components   authorized   by   the   Maintenance   Allocation   Chart   (MAC)   at   the   Direct   Support   and   General   Support Maintenance level. 15-1

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