Manual for: AGCO Loader
Format: PDF
Book Number: 79033462 & AG334846
English
Willmar 4560 Wrangler Service Manual
Parts Catalog
Manual TABLE OF CONTENTS
Introduction
Engine
Frame
Steering System
Hydraulic System
Electrical System
Cab
HVAC
Accessories
Attachments
Willmar 4560 Manual Extract
Drive system on machine starts with shuttle shifted hydrostatic transmission with IPOR. Transmission is a variable displacement, from minimum to maximum oil flow. The speed at which machine moves is controlled by use of foot pedal.
Forward and reverse motion of machine is controlled with use of shift lever located on steering column. Shift lever sends electrical signal down to directional controller on transmission. Drive pedal uses control pressure from hydro Ps-port.
When pedal is pushed down spool opens allowing controlled pressure oil into stroking piston, increasing pressure and oil flow to wheel motors, making machine move faster. When pedal is in up position, controlled pressure to controller is stopped allowing stroking piston to return to neutral. Oil is returned to R-port on top of hydro.
Hydro has charge pump that supplies oil flow and pressure to operate hydro. Charge pressure is adjustable and should be set to manufacturers specification. Charge pressure relief valve is set to 2200 kPa (319 psi).
