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John Deere Combines 6620, Side Hill 6620, 7720, 8820. Hydraulic Operations and Tests - part 3

SYSTEM SERVICE

SERVICE (SCHRADER) VALVES

MANIFOLD GAUGE SET

DISCHARGING THE SYSTEM

BENCH TESTING THERMAL EXPANSION VALVE

ADDING REFRIGERANT OIL TO THE SYSTEM

LEAK TESTING 

Group 10

PRESSURIZER SYSTEM OPERATION AND TESTS

HOW THE SYSTEM WORKS

DIAGNOSING MALFUNCTIONS

PRESSURIZER BLOWER ASSEMBLY

TESTING BLOWER SWITCH

Group 15

HEATING SYSTEM OPERATION AND TESTS
HOW THE SYSTEM WORKS

DIAGNOSIS AND TESTING

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