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