CHAPTER 4
HST system
SECTION 1. SPECIFICATIONS------------------------------------------
SECTION 2. COMPONENT LOCATION-------------------------------
1. Hydraulic hoses and lines------------------------------------------------
2. Hydrostatic transmission------------------------------------------------
3. Transmission main pump case------------------------------------------
4. Transmission back plate and motor-----------------------------------
5. Hydrostatic control linkage ------------------------------------
6. Hydrostatic system schematic------------------------------------------
SECTION 3. TROUBLE SHOOTING------------------------------------
SECTION 4. DIAGNOSTICS----------------------------------------------
SECTION 5. THEORY OF OPERATION------------------------------
1.HYDROSTATIC SYSTEM----------------------------------------------
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SECTION 6.TESTS AND ADJUSTMENTS --------------------------
1. Hydrostatic pedal and neutral adjustment-------------------------
2. Hydrostatic pump pressure test--------------------------------------
3. Charge pump pressure test--------------------------------------------
4. Hydraulic system bleed procedure----------------------------------
SECTION 7.REPAIR------------------------------------------------------
1. Tractor splitting(Front)-----------------------------------------------
2. Hydrostatic transmission removal & installation----------------
3. Hydrostatic transmission disassembly------------------------------
4. Hydrostatic pump disassembly---------------------------------------
5. Hydrostatic pump inspection-----------------------------------------
6. Hydrostatic pump assembly-------------------------------------------
7. Hydrostatic Motor disassembly--------------------------------------
8. Hydrostatic Motor assembly------------------------------------------
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