Page 31 MEGA 250-III HYDRAULIC SYSTEM SCHEMATIC ) ( Optional Emergency Steering System (Inc. Piping) Park DWG. No MEGA 250-III BR2 BR1 CLOSE 3B OPENS 25B FRONT REAR 0.7L 0.7L 0.7L 0.7L T P2 P1 60B PARK 140/120B 20 LM SAFETY 37B 60B at 35 BAR UNLOADER VALVE PILOT 20 LM 1.25 1.5 PUMP P1 T3 PARK A4 T4 ULTP C10 A1 A1 LPWS 85 A2 P2 TP C7 C6 C2 C1 C5 C8 C4 C3 100LM TPS C7 C6 C5 C4 C2 C3 160 TPM R3 C1 P3 P1 EF 1.25" 0.25" B R1 4-14 3 2* 10 Abs T2 BRAKE PILOT SUPPLY V/V C9 1 2 3 4 T P SP T U1 F L R O1 D C2 INLET OUTLET 1a 1A (CROWD) 1B (DUMP) 2a 2A (RAISE) 2B (LOWER/FLOAT) 3a 3A 3B 1b 2b 3b BUCKET BOOM OPTION 195 BAR 320 BAR _140x_75x475 _160x_85X795 10L CXP8156 CXP8156 LIS CUSHION V/V BUCKET CYL. BOOM CYL. SOLENOID V/V ACC. CONTROL V/V OPTION SOLENOID V/V PILOT CONTROLLER 4TF6 V90-102/V90-103 < < STEERING CYL. _80x_40x450 OPTION DEVICE (INC. PIPING) CF EF LS PRIORITY VALVE LS T P L R STEER UNIT LOADER PUMP STEER PUMP BRAKE/PILOT PUMP PUMP VKLU2B < < 185 BAR 40B 73.1 cm 3 /rev 62.7 cm 3 /rev 15.2 cm 3 /rev 230 BAR 230 BAR VALVE BLOCK LIS SYSTEM 1.25" 0.25" 0.25" R2 2" C 1.5 ~ 2.5 0.75" HATF340 320 BAR 320 BAR 320 BAR 320 BAR U3 U4 T U2 A T P2 P1 Switch Valve Emergency Ground Drive Pump * C3 T O2 C Optional Device (Inc. PPing) Log Fork System option REVISED 05/29/99

Page 12 MEGA 250-III RECEIVER DRIER CUT OFF SW LOW PRESS AIR HANDLING UNIT + (8) BLOWER SWITCH E 2 3 1 OFF M L H 0.85L 1.25LR 2 0.85LB 0.85LY 3 0.85LW 1 5 6 0.5YG 0.5YW 4 5 0.5RB 0.85LR 1 4 3 2 0.5B 0.85BW AIRCON CONTROLLER AMP MIC 13P 0.85B 12 13 10 8 7 9 11 CONDENSER FAN 1 3 5 6 4 2 AMP MIC 17P - M 0.85B TERMINAL NO FOR CONTROL UNIT (4) 0.85B 0.85B MAGNET HIGH PRESS 0.85LW CUT OFF SW CLUTCH COMPRESSOR (FL) 0.85B FRONT WORKING LAMP (RL) 0.85RG 0.85B WORKING LAMP RELAY (FR) (RR) 0.85RG 0.85RG 0.85B 0.85B 1.25RG 0.85RG 87 85 0.5B 1.25RG 86 0.5RG 87a 30 1.25RY 0.5RY 0.5WR 1.25RY 10 9 WORKING LAMP SW 1 7 5 0.5B STEP 4 0.85RW 75/70W HEAD LAMP(L) 0.85RG FLOAT 0.85B 0.85B 0.85RB FLOAT RELAY 0.85RB 0.85Gr 0.85BW 0.85RL 0.85P 0.85Y 0.85L REAR COMBI LAMP(L) DOWN KICK STEP STEP 2 STEP 1 3 0.85GW 10/25W 0.85WR 0.85Lg 0.85GR 0.85B 0.85GR 0.85Lg 0.85WR 0.85R 0.85G 0.85R RETURN TO DIG RELAY ENG OIL PRESS ENG OIL FILTER WORKING TO DIG RETURN RAISE 0.85B 1 T/SIG (R) 1 PREHEAT 1 BEAM CHARGE T/SIG (L) 1 0.5BY PARK BRAKE PRESS SWITCH ENG OIL PRESS SWITCH RAISE RELAY 0.5R 0.5RY 0.85YB 0.85G 0.85BW 0.85GB 0.85B 0.85B C4 D4 D3 5 4 D2 D1 3 2 C3 C2 C1 B4 B3 0.5RY 0.5YB 0.85GL 0.85BY 0.85LR 9 12 0.85B 8 29 7 6 27 28 ENG OIL FILTER SWITCH WATER TEMP SWITCH AIR CLEANER INDICATOR HYD OIL PRESS SWITCH COMBI LAMP(L) 21W PILOT BUZZER 25 26 14 0.85B 0.85R 23 24 0.5BW 22 20 21 19 0.5BG 0.5BrW 0.5GW 0.5B 0.5R 1 3 & CONVERTER B2 B1 0.85GL 0.5BY 0.5BrB 0.5GR 3 5 4 2 10 CONVERT 11 CONTROL UNIT 0.85WR 0.85GR 5 2 OIL PRESS WATER TEMP TACHO METER SPEEDO-METER 3 WATER FUEL TRANS 5 0.5R 1 0.85GY 0.85YR 0.5WR 4 4 0.5WG 0.5B 0.5B 4 3 2 2 TACHO 3 1 0.5B 1 2 4 SPEED 0.5GL 0.5Lg 16 18 17 0.5RG 15 0.5WG 0.85R 13 1 PRESS SENSOR 0.85L 0.85B 0.85RG TEMP SENSOR WATER TEMP SENSOR FUEL SENSOR 0.85BrY 0.5WG 4 8 ON WASHER SWITCH 0.5B WIPER RELAY REAR COMBI LAMP(R) N LICENCE LAMP F R 0.85WR 3Wx2 0.85RW 0.85R 0.85WR 0.85LB 0.85R 0.5B 53e 0.85GL 0.85LB 53a 0.5BL 5 3 0.85Lg 0.85GL 0.5BL 0.5BL WIPER TIMER 53 0.85BrL 0.5L 4 0.85B 31b LO 2 1 0.85BY WIPER MOTOR 53b M HI 0.85R 0.85RW 0.85BW 31b 53 53b J 53c J WIPER 0.85LB TML SW 15(53a) H 56a 56b L R I 0 OFF II 49a ON OFF HORN SWITCH THERMO CONTROLLER 0.85YB 0.85B 3 7 1 PREHEAT 6 5 2 ALTERNATOR 22V 2.6KW 15B F- F+ AIR HEATER 15R H I E 0.85WG 8W 0.85RW 8B E B R PARKING BRAKE SW REAR WIPER SW 0.85B COMBI LAMP(R) 75/70W HEAD LAMP(R) STOP LAMP SWITCH 0.85B (2) (1) REAR WIPER MOTOR 0.5Y 0.5B 0.85RY 0.85RY LIS SELECT SW 0.85LW 0.85B 0.5B 0.85LY HAZARD SWITCH 0.5WR 0.5WR 0.85L 0.85Y 0.85B 0.85Br ACC 0.85WR 1.25LR/0.85LW 0.5BG 0.5BW RELAY C PREHEAT 0.5BG 0.5BW 0.85WR R2 B 0.85Br R1 BR 0.85B 0.85LY ENG STOP MOTOR 5W 2WR A E P2 B P1 A 0.5LR SWITCH STARTER 0.5B 0.85BY C 0.85LW 0.85LR 0.85L BATTERY BATTERY RELAY B 12V 150AH - + 85B 15R B BR 0.85BrW 0.85B E 12V 150AH - + 85R 85R 85R 85B 31 30 50 STARTER A 0.85WG 0.5LR 2W 2Y 0.85B 0.85B 0.85W 0.85B 0.85B 0.85Or SOL-VALVE LOG FORK (1) (2) (C9) (C8) PARKING BRAKE SOL-VALVE FUSE BOX 15A 1 15A 3 15A 2 17 10A 10A 10A 9 11 10 15A 5 15A 15 4 15A 16 7 15A 6 8 15A 19 18 10A 10A 20 10A 13 12 14 : 2548-1014 : 2548-1015 STARTER SWITCH CONNECTION PST OFF START ON PREHEAT DIODE (1) ˜ (8) 1. DIODE PART NO. DIODE (11)˜(16) TML NOTE. R1 BR B C R2 ACC FUSIBLE LINK 2R FUEL PUMP P FUEL PUMP SWITCH 2R A 2WR 0.5G 2WR (2) (1) CIRCUIT BREAKER 0.85B 0.7bar STARTER CONTROLLER 0.85B 0.85L 11 ROOM LAMP 0.85W CIGAR LIGHTER 0.5WG B CONVERTER DC / DC 2 10W 0.85RW 1 3 0.85WR 0.85L 10 0.85BR STEREO 3 4 9 CAR ANTENNA (LH) + 0.85GrL 0.85BW 0.85GrR 0.85BY 8 2 7 1 + SPEAKER - - (RH) STARTER RELAY 0.85BY 0.85BW 0.85B P E N S C D B PP 24V 60A A2 A3 A4 A1 B E P M S ENG STOP RELAY 86 30 85 87 87a BEAM LAMP RELAY 85 87 87a 30 86 10 1 7 9 5 0.85RB PROXIMITY SW 0.85WG 0.85WR 0.85W 5 9 1 10 7 6 6 4 5 3 2 5 6 3 4 2 6 5 4 3 2 0.5RY 0.85B 0.85B FRONT FRONT 0.85B H.F HORN (L) L.F 0.85BrY 0.85B HORN (R) 0.85BrY 0.85BrY REAR WORKING LAMP 0.5RG (3) 0.85B 0.5BL 0.85B S/V(1) 0.5B (11) 0.85GL 0.5P 0.85YG 0.85LW S/V(2) S/V(3) FORWARD REVERSE FORWARD CUT OFF SW 1 BACK RELAY 85 87a 87 86 30 0.85LB 87a 85 87 86 30 87 85 87a 86 30 87 85 87a 86 30 24V 6KW 2WR 8W 8W 0.5R 0.5R PARK BRAKE WATER TEMP HYD OIL PRESS AIR CLEANER 87a 85 87 86 30 0.85R 0.85RW 0.85GL 0.85Lg 0.85LB 0.5B 0.5B 0.5R 0.5LB 0.85RB 0.5GB 0.5YB 0.85LR 24V 55W 24V 55W 1.25R 0.85WR 0.5BrW 0.85WG 1.25R 0.85WG 1.25R 0.5BrW 0.85WR 0.85WR 0.85GW 0.5R 0.85RB 0.85RB 0.85RB 0.85RB 0.85RB 0.85WG 0.5BrW 0.5LR 0.85WR 0.5LR 0.85LR 2W 8W 0.85BrL 1.25LR 0.5RW 0.5BW 0.5LB 0.85WR 0.5BG 0.85RB 0.85Br/0.85WL 0.85GY 1.25RL/0.85LY 0.5RW 1.25RY 0.85LB 0.5BW 0.85GW 0.85RB 1.25RL/0.85LY 0.85Lg 1.25RL/0.85LY 0.5BrW 0.5Lg 0.5R 0.5LB 0.85RW 8W 0.5LB 0.85LW 0.85BrW 0.5WR 0.85L/0.85W 1.25RY 1.25R 0.85WR/0.85RW 0.85L/0.85W 0.85WR 0.85G 0.85WR 2WR 5W 0.85W 0.85L 0.85Y 2WR & FUEL GAUGE TRANSMISSION TEMP GAUGE TRANSMISSION OIL CONVERTER OIL TEMP TEMP PRESS 0.85B PROXIMITY SW 0.85B 0.85RB PROXIMITY SW 0.85B 0.85RB (12) 0.85B (13) 0.85B (14) 0.85B (15) 0.85B SOL-VALVE ASS'Y TRANSMISSION 0.85BR HEAD LAMP RELAY 0.85GY BLINKER UNIT L B E 0.85B 0.85G 15/1 (7) LIS SOL-VALVE 0.85WR 0.85WG 0.85W + O - + O - + O - 0.5WR FAN RELAY 0.5RB 0.85LR 0.85WB 0.85GR C E A D B F 0.85R LIS ASS'Y (OPTION) (turn sig) (clearanc) (clearanc) (turn sig) C B A 25W 25W D E 10W 10W 21W D 0.85GR 0.85GL C 0.85GW 0.85WR A B 0.85B E 25/10W 25W 25W (turn sig) (clearanc) (clearanc) (turn sig) (stop) (back up) (stop) (back up) (low) (high) (high) (low) 0.5GL 0.85L 0.5BrW + - (RAISE) (RETURN TO DIG) (FLOAT) 5 0.5WR 5 8W 0.85WR 0.85LR 0.85LB 0.85GY 0.85LR 0.85WR 1.25RL/0.85LY 0.85GY/0.85GR 0.85Br/0.85WL 1.25LR/0.85LW 0.85RB/0.85RW 1.25R PILOT LAMP (A) PILOT LAMP (B) PILOT LAMP (C) PILOT LAMP (D) LOG FORK (OPTION) 2 5 10 9 6 4 7 CN1-6 CN1-1 CN1-4 CN1-7 CN2-6 CN1-2 CN2-8 CN2-3 CN2-7 CN2-4 CN2-1 0.85RY HORN SWITCH 2 0.85BrY 103 C 30 85 0.5B 87 86 87a 0.5RB 0.85L 0.5RB 0.85LR 1.25LR 0.85W P 0.85BR (16) - + 0.85B WINDOW WASHER 0.85WY 0.5B 85 87a 87 86 30 LAMP SWITCH 1 2 0.85GR OFF E M L TML SW CN1-8 0.85GY 0.85WY CN1-5 56 0.85GR CN1-9 TURN SIGNAL N HEAD LAMP COMBINATION (5) (6) 7 10 1 9 5 0.5B 0.85GY FRONT 0.85BrL 0.85WR 0.5BG 0.5BW 0.5LB 0.5WY 0.85B ROTATING BEACON (OPTION) 0.85R (ON JOYSTICK)-F + 0.85B - 0.5WR PILOT CUT OFF SW 0.85WL 0.85B PILOT CUT OFF SOL-VALVE 0.85BW 7 0.5B 10 9 1 5 AIRCON SWITCH 0.5B 9 0.5RW 5 7 10 1 0.5WR FORWARD CUT OFF SW 2 0.85LY 0.85GW 0.5WR 0.5WR 0.5R HOUR METER H 0.5R 2 0.5B 1 3 0.5RW 2. MARKED (*) : CE OPTION PART NO. 1.25R 0.85Br 0.5GL 0.85R (ON JOYSTICK)-R / LOG FORK SW 0.85WL KICK DOWN SW 0.85W 0.85W 0.5WR 8 0.85G TRANSMISSION CONTROLLER SAFETY START RELAY 0.5B 86 87 87a 85 30 0.5Gr AD2 AD4 AD5 AD3 VP AD6 AD7 AD1 0.85V 25 24 8 26 27 5 23 17 15 14 31 32 33 22 0.85V 0.85RY 0.85RB 2 29 1 12 0.5RW LIS RELAY 85 87 87a 30 86 0.85RB 0.5B 0.85WB 0.85GL 0.85LW 0.85YG 0.85RL 0.85RL 0.85Gr 0.85RY 0.85GR 0.85B 0.85B 35 18 1 2 0.5RW 0.5RW 0.5BrW 0.85RL 0.85RL SENSOR 0.85G 0.85Y 0.85P 0.85RL 0.85Gr 0.85L 0.85BW 0.85V 0.85GR 0.85B BACK BUZZER + - 0.85GR 0.85RL 0.85RL 0.85Gr 0.5BrW 0.85RY MAGNET MAGNET MAGNET SPEED CONTROL (ZF 6009 636 002) EST-17T T/M SELECTOR SWITCH 0.85B 25 26 30 29 27 28 23 24 22 18 19 20 21 16 17 15 14 0.5Or 0.5Or 0.5Or (1) (2) (C10) 11 0.85RG 0.85RG 0.5RW 0.85L WIRING DIAGRAM DOOSAN INFRACORE NO. MEGA 250-III Name HATF350