CLAAS ARGO K50 K60 K70 Hydraulics & Electrics Technical Manual (EN)

HYDRAULICS ELECTRICS TECHNICAL DATA CL CL CL CL CLAAS T AS T AS T AS T AS TARGO K50 K60 K70 ARGO K50 K60 K70 ARGO K50 K60 K70 ARGO K50 K60 K70 ARGO K50 K60 K70

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The machines in this handbook are designed essentially for agricultural and associated applications. This is their intended use. Any modifications made to the machine without prior written approval from CLAAS or if the machine is used in any way contrary to the intended use or if the machine is not properly driven or maintained then the Company will not accept any liability whatsoever for any damage or injury (whether direct or consequential). The method of operation and maintenance specified in this handbook should be strictly adhered to. For your parts requirements, it is essential that only genuine CLAAS parts are fitted.

Any resultant damage from non-genuine parts will invalidate your machine warranty. CLAAS operates a policy of continuous improvement to its products and reserve the right to change specifi- cations and equipment without notice. Therefore some information within this handbook may differ from your machine. This manual is designed to service machines: from Serial No. 51200011 up to Serial No. 51200727. from Serial No. K5D00100 from Serial No. K6D00100 from Serial No. K7D00100

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CONTENTS

CONTENTS I NTRODUCTION General Machine identification Health and Safety SAFETY WARNINGS SECTION 1 HYDRAULICS Description and Operation 1.1 Description 1.1 General 1.1 Dumping (dissipation) of hydraulic pressure 1.1 To dump brake system pressure 1.1 To dump a system pressure 1.1 Hydraulic Circuit - Single Circuit Braking (up to Machines S/No.51200317) 1.2 Hydraulic Circuit - Single Circuit Braking (from Machines S/No.51200318 to 51200471) 1.4 Hydraulic Circuit - Single Circuit Braking (from Machines S/No.51200472 to 51200551) 1.6 Hydraulic Circuit - Single Circuit Braking (from Machines S/No.51200552 to 51200727) 1.8 Hydraulic Circuit - Dual Circuit Braking (up to Machines S/No.51200317) 1.10 Hydraulic Circuit - Dual Circuit Braking (from Machines S/No.51200318 to 51200471) 1.12 Hydraulic Circuit - Dual Circuit Braking (from Machines S/No.51200472 to 51200551) 1.14 Hydraulic Circuit - Dual Circuit Braking (from Machines S/No.51200552 to 51200727) 1.16 Components General 1.18 Hydraulic tank 1.18 Suction line connections to hydraulic tank 1.18 Return hose connections to hydraulic tank (up to Machines S/No.51200471) 1.18 Return hose connections to hydraulic tank (from Machines S/No.51200472) 1.18 Hydraulic pump (load sensing) 1.19 Pump compensator (load sensing) 1.19 Tank filter 1.19 Filler/Breather 1.19 Auxiliary hydraulic pump 1.19 Fan motor (up to Machines S/No.51200471) 1.20 Fan reverse motor (from Machines S/No.51200472) 1.20 Pressure reducing valve (PRV) for the parking brake (up to Machines S/No.51200551) 1.21 Pressure filter 1.21 Single circuit brake pressure servo valve (MICO) (up to Machines S/No.51200471) 1.22 Duel circuit brake pressure servo valve (MICO) (up to Machines S/No.51200471) 1.22 Single circuit brake pressure servo valve (SAFIM) (from Machines S/No.51200472) 1.23 Duel circuit brake pressure servo valve (SAFIN) (from Machines S/No.51200472) 1.23 Accumulator(s) 1.24 Pressure switch 1.24 Pressure switch (transmission dump) 1.24 Front axle 1.25 Steering cylinder (front) 1.25 Pressure switch (brake light) 1.25 Pressure switch (parking brake) 1.26 Rear axle 1.26 Steering cylinder (rear) 1.26 Non-return valve 1.26 Steering valve 1.27 Steering in Neutral position 1.27 Steering in Operation 1.28 Pressure relief valve 1.28 Steering selector valve 1.29

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CONTENTS

CONTENTS Components (continued) Control valve 1.30 Outlet section (PVP) 1.31 Function 1.31 Extension section 1.32 Function 1.32 Crowd section 1.33 Function 1.33 Lift section 1.34 Function 1.34 1st service/2nd service section 1.35 Function 1.35 Inlet section (PVSP) section 1.36 Function 1.36 Accumulator 1.38 Tap 1.38 Trailer brake valve 1.38 Trailer brake coupling 1.38 Extension cylinder 1.39 Load control valve 1.39 Crowd cylinder 1.40 Load control valve 1.40 Compensator cylinder 1.41 Lift cylinder 1.41 Load control valve 1.42 Diverter valve 1.43 Manifold 1.43 Autohitch cylinder 1.44 1st service couplings 1.44 2nd service couplings 1.44 Trailer tipping connection 1.44 Start-up valve 1.44 Non-return valve (up to Machine S/No.51200317 only) 1.45 Pressure relief valve (up to Machine S/No.51200471 only) 1.45 Breather 1.45 Parking brake valve (from Machine S/No.51200552 only) 1.46 Fan reverse valve (from Machine S/No.51200472 only) 1.47 Oil cooler (from Machine S/No.51200472 only) 1.48 Operation 1.49 General 1.49 Relief valves 1.49 System pressure checks 1.50 LS pump 1.52 LS pump compensator operation 1.52 Standby position (engine switched off) 1.53 Standby position (engine started) 1.54 Pump goes into delivery 1.56 Constant volumetric flow 1.58 Downstroking of the pump 1.59 Maximum pressure limiting (pressure relief valve function) 1.45 Adjusting the pump 1.63

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