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BMK Page Function textB1 1,11 fuel level sensor B10 3,5 Grease lubrication system sensorB11 6,14 Load-sensing control micro controllerB2 1,12 Switch/sensor for coolant temperatureB2 5,14 LoudspeakerB3 2,3 Brake pressure warning buzzer, overload warning device B3 5,14 LoudspeakerB4 4,5 HornB5 5,16 Socket 24 VB9 3,5 Complete control unit of grease lubrication system D1 5,5 DiodeE1 5,16 Cigarette lighterF0 1,5 Fuse for glow plugs F1 1,9 Ignition control, engine shut-off, operating hour meter, charge control, coolant

level sensorF10 6,1 CEB-control F11 6,10 Dozer blade, change-over of work functions F12 6,13 Individual outriggers (optional)F13 7,14 Reserve Terminal 15F14 7,10 Supplementary heating, air heatingF15 7,10 Supplementary heating, control unitF16 7,14 Reserve Terminal 30F17 4,1 Hazard warning systemF18 4,9 Operating current for additional working floodlight, hornF19 4,13 Parking light, right, working floodlight on box-type boomF2 1,11 Tank temperature indicator, engine overheating, coolant level indicator, air filter,

engine oil pressure, hydraulic oil temperature F20 4,13 Parking light, left, control current for additional working floodlight, lower beamF21 5,15 Rotating beacon(s), radio, socket 24 V, cigarette lighter, interior lightingF22 6,2 Fan, heating, air conditioning thermostatF23 6,9 Condenser fan of air conditioningF24 7,2 Magnet device (option)F3 2,2 Brake pressure control, overloading warning device, hand brake, oscillating axle

lock, travel, transmission control (1st/ 2nd gear)F33 1,4 Main fuse Terminal 30F34 1,1 Main fuse Terminal 15F4 2,12 Engine overheat protection, working hydraulics cut-offF5 3,3 Work zone extension, grease lubrication system, oil radiator, cab up/down, cab

forward/backward, switch lightF6 3,12 Grab rotation, bypass, pressure increase F7 4,2 Turn signal F8 4,15 Lower beam control F9 5,7 Wash/wipe systems of both windows, driver's seat, CEB-control trouble indicator

lampG1 1,1 Generator G1 1,1 Three-phase generator with rectifier for magnet device G2 1,2 Battery 12 VG3 1,2 Battery 12 VH0 1,3 Pre-heat indicator lampH1 1,8 Charge control lampH12 4,2 Turn signal lamp H13 4,3 Turn signal, front left H14 4,3 Turn signal, rear leftH15 4,4 Turn signal, front right H16 4,4 Turn signal, rear rightH19 4,13 Parking light, front left H2 2,2 Brake pressure control indicator

Legend Electric schematicCentral electric MHL 320 7.050.06

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BMK Page Function textH20 4,13 Parking light, rear left H21 4,12 Parking light, front right H22 4,12 Parking light, rear right H23 4,11 Working floodlight H24 5,12 Interior light H25 4,14 Low beam, front left H26 4,15 Low beam, front right H27 2,14 Working hydraulics indicator (amber)H28 3,2 Stick cut-off indicator (red) H3 1,14 Air filter clogging indicator H33 6,7 Load-sensing control fault indicationH4 1,15 Engine oil pressure indicator H41 1,13 Indicator for insufficient coolant levelH47 4,7 Working floodlight, cab roof, front H48 4,8 Working floodlight cab roof, frontH49 4,6 Working floodlight cab roof, rearH5 1,16 Hydraulic oil temperature indicator H50 4,7 Working floodlight cab roof, rearH53 7,6 Indicator lamp for magnetizing / demagnetizing H54 1,13 Coolant temperature indicator H6 2,7 Hand brake indicator K11 4,15 Relay in switch box (Driving lights)K12 3,16 Relay in switch box (Heavy lift 360 bar)K14 5,1 Interval relay in operator control panel (??)K18 4,9 Relay in switch box (Working lights)K2 2,2 Relay in switch box (Brake pressure>>Buzzer)K20 3,7 Relay in switch box (Hydraulic oil cooler) K21 2,12 Relay in switch box (Coolant temp.>>Pilot shut off)K22 2,1 Relay in switch box (Coolant temp.>>Parking brake>>Drive shut off)K23 1,14 Pre-heat relay (Glow plug relay)K28 6,2 Relay in switch box (Heater blower)K29 6,9 Relay in switch box (Air conditioner)K30 6,2 Relay in switch box (Diesel heater>>Heater blower shut off>> K28)K4 4,1 Blinker relay in steering column K5 2,12 Relay in switch box (Pilot shut off)K6 3,1 Relay in switch box (Stick proximity switch S15>>Stick in shut off)K7 3,12 Relay in switch box (Grapple rotation)K8 3,14 Relay in switch box (Grapple rotation) L1 7,4 MagnetM1 1,3 Starter M11 7,11 Pump supplementary heating M12 6,9 Condenser fan of air conditioningM13 6,9 Speed controller servomotor M2 5,9 Washer pump, upper window section M3 5,7 Wiper motor, upper window sectionM8 5,2 Wiper motor, lower window section M9 5,4 Washer pump, lower window section P1 1,8 Operating hour meter P2 1,12 Tank temperature indicator P3 7,7 VoltmeterR1 1,4 temperature sensor for cold startR1 6,3 Potentiometer for hot water servomotorR12 6,15 Manual throttle potentiometerR2.1 1,4 Glow plugR2.2 1,5 Glow plugR2.3 1,5 Glow plugR2.4 1,6 Glow plug

Legend Electric schematicCentral electric MHL 320 7.050.07

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BMK Page Function textR2.5 1,6 Glow plugR2.6 1,7 Glow plugS1 1,9 Ignition lock S10 2,5 Transmission control switch S12 4,3 Steering column switch S13 2,14 Armrest switch for working hydraulics S14 2,14 Proximity switch for working hydraulics cut-off S15 3,1 Stick proximity switch S16 3,12 Push-button for grab rotation S17 3,3 Switch for work zone extensionS18 3,8 Switch for cab up/down S19 6,2 Switch for ventilation/heating S2 2,1 Pressure switch for brake pressure control S23 3,5 Switch for grease lubrication system S24 2,4 Switch for overload warning device S25 2,4 Overload warning device pressure switch S26 5,5 Wash/wipe switch, upper window section S28 4,13 Switch for parking light/low beam S3 1,14 Air filter pressure switch S30 3,16 pressure switch travel modeS34 7,3 Push-button for magnet device S4 1,15 Engine oil pressure switch S40 6,2 Switch for load-sensing emergency operationS43 6,4 Working hydraulics pressure switch (of load-sensing control)S45 6,5 Switch for auto-idling systemS46 3,6 temperature switch for hydraulic cooler fanS47 2,15 Switch for working hydraulics S5 1,16 Hydraulic oil temperature switch S52 5,7 Switch for deactivation of windshield washer function when windshield is opened

S54 1,13 Coolant level switch S6 2,8 Hand brake pressure switch S60 5,15 Switch for rotating beacon S61 5,4 Wash/wipe switch, lower window section S63 6,10 Switch for dozer blade S66 7,12 Switch for work functions change-over (option)S67 7,5 Switch for magnet device S68 6,3 Switch for Fine-Mode load-sensing control S69 6,13 Toggle switch for individual outriggers S7 2,8 Oscillating axle switch S70 6,13 Toggle switch for individual outriggers S71 6,13 Toggle switch for individual outriggers S72 6,13 Toggle switch for individual outriggers S73 4,6 Switch for working floodlight, rear cab roof S74 6,5 Switch for air conditioning potentiometerS75 6,6 Air conditioning pressure switch S8 4,1 Hazard warning switch S80 3,16 Pressure boost pressure switch cut-off when opening/ closing grab S83 1,12 hydraulic oil level switchS9 4,1 Switch for working floodlights V1 3,14 Diode block Y0 1,7 Valve for extra-large fuel supply during start-up Y1 1,8 Cut-off valve Y10 3,13 Solenoid valve for grab rotation Y11 3,14 Solenoid valve for grab rotation Y12 3,15 Solenoid valve for bypassY13 2,6 Solenoid valve for road gear

Legend Electric schematicCentral electric MHL 320 7.050.08

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BMK Page Function textY15 3,16 Solenoid valve for pressure boost Y2 2,8 Solenoid valve for oscillating axle Y25 6,6 Solenoid valve for load-sensing control Y26 3,6 hydraulic cooler solenoid (fan motor)Y3 6,3 Fine-Mode solenoid valve or solenoid valve *Y30 6,6 Air conditioning magnetic coupling Y33 3,11 Solonoid cab reverseY34 3,1 Soloniod cab forwardY4 2,1 Solenoid valve for travel Y5 2,13 Solenoid valve for working hydraulics Y6 3,3 Solenoid valve for stick cut-offY7 2,6 Solenoid valve for off-road gear Y8 3,8 Solenoid valve for cab up Y9 3,9 Solenoid valve for cab down

Legend Electric schematicCentral electric MHL 320 7.050.09