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John Deere Combines 6620, Side Hill 6620, 7720, 8820. Hydraulic Operations and Tests - part 1

POSI-TORQ GROUND DRIVE WILL NOT MAINTAIN A CONSTANT SPEED-Continued

UNLOADING AUGER WILL NOT SWING IN OR OUT

VARIABLE SPEED FEEDER HOUSE WILL NOT MAINTAIN A CONSTANT SPEED SIDEHILL 6620 ONLY

VARIABLE SPEED FEEDER HOUSE WILL NOT CHANGE SPEED SIDEHILL 6620 ONLY

Group 10 RESERVOIR

Group 15 HYDRAULIC PUMPS

HYDROSTATIC DRIVE REEL OR BELT PICKUP PUMP
 

MAIN HYDRAULIC PUMP

Group 20 HYDRAULIC VALVES

MAIN SYSTEM CONTROL VALVE

Hydraulic Lift Reel Control

HYDROSTATIC DRIVE REEL OR BELT PICKUP FLOW CONTROL VALVE

UNLOADING AUGER SWING CONTROL VALVE

UNLOADING AUGER SWING FLOW CONTROL PLUG

Neutral Position

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