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Komatsu PC600LC-7 Manual

Komatsu PC600LC-7 Manual

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MACHINE MODEL
PC600-7
PC600LC-7
•
This shop manual may contain attachments and optional equipment that are not available
in your area. Please consult your local Komatsu distributor for those items you may
require. Materials and specifications are subject to change without notice.
•
PC600, 600LC-7 mount the KOMATSU SA6D140E-3 engine.
For details of the engine, see the 140-3 Series Engine Shop Manual.
© 2003
All Rights Reserved
Printed in Japan 07-03 (01)
SERIAL No.
20001 and up
20001 and up
SEBM031200
00-1

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  • Page 1 20001 and up • This shop manual may contain attachments and optional equipment that are not available in your area. Please consult your local Komatsu distributor for those items you may require. Materials and specifications are subject to change without notice. •...
  • Page 2 GENERAL CONTENTS No. of page 01 GENERAL ..........................01-1 10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ..........10-1 20 TESTING AND ADJUSTING ..........To be issued next time 30 DISASSEMBLY AND ASSEMBLY ......To be issued next time 90 OTHERS ..........................90-1 00-2 PC600, 600LC-7...
  • Page 3 Proper service and repair is extremely important for safe machine operation. The service and repair techniques recommended by Komatsu and described in this manual are both effective and safe. Some of these techniques require the use of tools specially designed by Komatsu for the specific purpose.
  • Page 4 SAFETY SAFETY NOTICE PRECAUTIONS DURING WORK 19.Be sure to assemble all parts again in their origi- nal places. 11. When removing the oil filler cap, drain plug or Replace any damaged parts with new parts. hydraulic pressure measuring plugs, loosen •...

  • Page 5: General

    FOREWORD GENERAL FOREWORD GENERAL This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judge- ments.
  • Page 6 DISTRIBUTION AND UPDATING Any additions, amendments or other changes will be Symbol Item Remarks sent to KOMATSU distributors. Get the most up-to- date information before you start any work. Special safety precautions ¤ Safety are necessary when per- forming the work.
  • Page 7 FOREWORD HOISTING INSTRUCTIONS HOISTING INSTRUCTIONS HOISTING Slinging near the edge of the hook may cause ¤ the rope to slip off the hook during hoisting, and H eavy parts (25 kg or more) must be lifted a serious accident can result. Hooks have max- with a hoist, etc.
  • Page 8 FOREWORD METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER ¤ B efore carrying out the following work, release Type 1 the residual pressure from the hydraulic tank. For details, see TESTING AND ADJUSTING, Releasing residual pressure from hydraulic tank.
  • Page 9 FOREWORD METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER Type 2 Type 3 1) Hold the mouthpiece of the tightening portion 1) Hold the mouthpiece of the tightening portion and push body (2) in straight until sliding pre- and push body (2) in straight until sliding pre- vention ring (1) contacts contact surface a of vention ring (1) contacts contact surface a of the hexagonal portion at the male end.
  • Page 10 # The recommended coating materials such as adhesives, gasket sealants and greases used for disassembly and assembly are listed below. # For coating materials not listed below, use the equivalent of products shown in this list. Category Komatsu code Part No. Q'ty Container Main applications, featuresr •...
  • Page 11 FOREWORD COATING MATERIALS Category Komatsu code Part No. Q'ty Container Main applications, featuresr • Ftures: Silicon based, quick hard- ening type LG-7 790-129-9070 Tube • Used as sealant for flywheel housing, intake manifold, oil an, Adhesives thermostat housing, etc. •...
  • Page 12 FOREWORD STANDARD TIGHTENING TORQUE STANDARD TIGHTENING TORQUE STANDARD TIGHTENING TORQUE TABLE (WHEN USING TORQUE WRENCH) # In the case of metric nuts and bolts for which there is no special instruction, tighten to the torque given in the table below. Thread diameter Width across of bolt...
  • Page 13 FOREWORD STANDARD TIGHTENING TORQUE TABLE OF TIGHTENING TORQUES FOR SPLIT FLANGE BOLTS # In the case of split flange bolts for which there is no special instruction, tighten to the torque given in the table below. Thread diameter Width across flat Tightening torque 65.7 11.5...
  • Page 14 FOREWORD STANDARD TIGHTENING TORQUE TIGHTENING TORQUE FOR 102 ENGINE SERIES 1) BOLT AND NUTS Use these torques for bolts and nuts (unit: mm) of Cummins Engine. Thread diameter Tightening torque 1.02 0.20 2.45 0.41 4.38 0.61 7.85 1.22 2) EYE JOINTS Use these torques for eye joints (unit: mm) of Cummins Engine.
  • Page 15 FOREWORD ELECTRIC WIRE CODE ELECTRIC WIRE CODE In the wiring diagrams, various colors and symbols are employed to indicate the thickness of wires. This wire code table will help you understand WIRING DIAGRAMS. Example: 5WB indicates a cable having a nominal number 5 and white coating with black stripe. CLASSIFICATION BY THICKNESS Copper wire Current...
  • Page 16 FOREWORD CONVERSION TABLE CONVERSION TABLE METHOD OF USING THE CONVERSION TABLE The Conversion Table in this section is provided to enable simple conversion of figures. For details of the method of using the Conversion Table, see the example given below. EXAMPLE •...
  • Page 17 FOREWORD CONVERSION TABLE Millimeters to Inches 1 mm = 0.03937 in 0.039 0.079 0.118 0.157 0.197 0.236 0.276 0.315 0.354 0.394 0.433 0.472 0.512 0.551 0.591 0.630 0.669 0.709 0.748 0.787 0.827 0.866 0.906 0.945 0.984 1.024 1.063 1.102 1.142 1.181 1.220 1.260...
  • Page 18 FOREWORD CONVERSION TABLE Liter to U.S. Gallon 1 l = 0.2642 U.S. Gal 0.264 0.528 0.793 1.057 1.321 1.585 1.849 2.113 2.378 2.642 2.906 3.170 3.434 3.698 3.963 4.227 4.491 4.755 5.019 5.283 5.548 5.812 6.076 6.340 6.604 6.869 7.133 7.397 7.661 7.925...
  • Page 19 FOREWORD CONVERSION TABLE kgm to ft. lb 1 kgm = 7.233 ft. lb 14.5 21.7 28.9 36.2 43.4 50.6 57.9 65.1 72.3 79.6 86.8 94.0 101.3 108.5 115.7 123.0 130.2 137.4 144.7 151.9 159.1 166.4 173.6 180.8 188.1 195.3 202.5 209.8 217.0 224.2...
  • Page 20 FOREWORD CONVERSION TABLE kg/cm to lb/in 1kg/cm = 14.2233 lb/in 14.2 28.4 42.7 56.9 71.1 85.3 99.6 113.8 128.0 142.2 156.5 170.7 184.9 199.1 213.4 227.6 241.8 256.0 270.2 384.0 398.3 412.5 284.5 298.7 312.9 327.1 341.4 355.6 369.8 426.7 440.9 455.1 469.4...
  • Page 21 FOREWORD CONVERSION TABLE Temperature Fahrenheit-Centigrade Conversion ; a simple way to convert a Fahrenheit temperature reading into a Cen- tigrade temperature reading or vice versa is to enter the accompanying table in the center or boldface col- umn of figures. These figures refer to the temperature in either Fahrenheit or Centigrade degrees.
  • Page 22 FOREWORD UNITS UNITS In this manual, the measuring units are indicated with Internatinal System of units (SI). As for reference, conventionally used Gravitational System of units are indicated in parentheses { Example: N {kg} Nm {kgm} MPa {kg/cm kPa {mmH kPa {mmHg} kW/rpm {HP/rpm} g/kWh {g/HPh}...
  • Page 23 01 GENERAL SPECIFICATION DRAWINGS ........................01- 2 SPECIFICATIONS ............................01- 4 WEIGHT TABLE............................01- 8 FUEL, COOLANT AND LUBRICANTS ......................01- 10 01-1 PC600, 600LC-7...

  • Page 24: Specification Drawings

    GENERAL SPECIFICATION DRAWINGS SPECIFICATION DRAWINGS BACKHOE SPECIFICATION 01-2 PC600, 600LC-7...
  • Page 25 GENERAL SPECIFICATION DRAWINGS Unit: mm Machine model PC600-7 PC600LC-7 Serial Number 20001 and up 20001 and up 12,810 12,810 3,900 3,900 4,300 4,300 3,290 3,290 1,365 1,365 4,250 4,600 3,300 3,300 3,195 3,195 3,070 3,070 9,135 9,135 3,675 3,675 11,880...

  • Page 26: Specifications

    GENERAL SPECIFICATIONS SPECIFICATIONS PC600-7 Machine model PC600-7 Serial Number 20001 and up Bucket capacity Weight of machine 56,600 Max. digging depth 8,490 Max. vertical wall depth 7,510 Max. digging reach 13,020 Max. reach at ground level 12,800 Max. digging height 11,880 Max.
  • Page 27 GENERAL SPECIFICATIONS Machine model PC600-7 Serial Number 20001 and up Model KOMATSU SA6D140E-3 Type 4-cycle, water-cooled, in-line, vertical, direct injection, with turbocharger and aftercooler (water cooled) No. of cylinders – bore × stroke 6 – 140 × 165 l {cc} Piston displacement 15.24 {15,240}...
  • Page 28 GENERAL SPECIFICATIONS PC600LC-7 Machine model PC600LC-7 Serial Number 20001 and up Bucket capacity Weight of machine 57,600 Max. digging depth 8,490 Max. vertical wall depth 7,510 Max. digging reach 13,020 Max. reach at ground level 12,800 Max. digging height 11,880 Max.
  • Page 29 GENERAL SPECIFICATIONS Machine model PC600LC-7 Serial Number 20001 and up Model KOMATSU SA6D140E-3 Type 4-cycle, water-cooled, in-line, vertical, direct injection, with turbocharger and aftercooler (water cooled) No. of cylinders – bore × stroke 6 – 140 × 165 l {cc} Piston displacement 15.24 {15,240}...

  • Page 30: Weight Table

    GENERAL WEIGHT TABLE WEIGHT TABLE k This weight table is a guide for use when transporting or handling components Unit: kg Machine model PC600-7 PC600LC-7 Serial Number 20001 and up 20001 and up Engine assembly 2,305 2,305 • Engine 1,720 1,720 •...
  • Page 31 GENERAL WEIGHT TABLE Unit: kg Machine model PC600-7 PC600LC-7 Serial Number 20001 and up 20001 and up Track shoe assembly • Standard triple grouser shoe (600 mm) 5,930 6,290 • Wide triple grouser shoe (750 mm) 6,750 7,170 Boom assembly...

  • Page 32: Fuel, Coolant And Lubricants

    GENERAL FUEL, COOLANT AND LUBRICANTS FUEL, COOLANT AND LUBRICANTS 01-10 PC600, 600LC-7...

  • Page 33: Table Of Contents

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD 10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD PARTS RELATED TO ENGINE ......................10- PTO ............................... 10- CONTROL AND PTO LUBRICATION PUMP ..................10- RADIATOR, OIL COOLER ........................10- POWER TRAIN ............................. 10- FINAL DRIVE ............................10- 10 SWING CIRCLE ............................

  • Page 34: Parts Related To Engine

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD PARTS RELATED TO ENGINE PARTS RELATED TO ENGINE 1. Air cleaner 4. Front engine mount 2. Intake connector 5. Rear engine mount 3. Muffler 10-2 PC600, 600LC-7...
  • Page 35 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD PARTS RELATED TO ENGINE Unit: mm Check item Criteria Remedy Standard size Repair limit Free height of front mount rubber — Replace Free height of rear mount — rubber 10-3 PC600, 600LC-7...

  • Page 36: Pto

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD 1. Connection plate a. Center of crankshaft (Center of SAL56 shaft) 2. PTO case b. Center of HPV95+95 shaft 3. Driven gear (No. of teeth: 40) c. Center of HPV95+95 shaft 4. Drive gear (No. of teeth: 36) 5.
  • Page 37 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD Unit: mm Check item Criteria Remedy Standard clearance Clearance limit Backlash between drive gear and driven gear 0.23 – 0.74 — Backlash of SAL56 pump Adjust 0.273 – 0.374 — input shaft Backlash between main 0.081 –...

  • Page 38: Control And Pto Lubrication Pump

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL AND PTO LUBRICATION PUMP CONTROL AND PTO LUBRICATION PUMP SAL56 + 8 Unit: mm Check item Remedy Criteria Model Standard clearance Clearance limit Clearance between gear case and side SAL56 0.13 – 0.18 0.22 plate SAL8 0.10 –...

  • Page 39: Radiator, Oil Cooler

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD RADIATOR, OIL COOLER RADIATOR, OIL COOLER 1. Oil cooler 7. Radiator cap Specifications 2. Radiator 8. Fan Radiator: CWX-5 3. Radiator inlet hose 9. Cushion Oil cooler: J-5 4. Radiator outlet hose 10. Collar 5. Reservoir tank 6.

  • Page 40: Power Train

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD POWER TRAIN POWER TRAIN 10-8 PC600, 600LC-7...
  • Page 41 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD POWER TRAIN 1. Idler 11. Control pump (SAL56) 2. Center swivel joint 12. Swing brake solenoid valve 3. Swing motor (KMF90ABE-3) 13. Travel speed solenoid valve 4. Control valve 14. Swing machinery 5. Final drive, sprocket 15.

  • Page 42: Final Drive

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD FINAL DRIVE FINAL DRIVE 1. Level plug 2. Drain plug 3. No. 1 planetary gear (No. of teeth: 50) 4. No. 1 sun gear (No. of teeth: 12) 5. No. 2 sun gear (No. of teeth: 14) 6.
  • Page 44 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD FINAL DRIVE 10-12 PC600, 600LC-7...
  • Page 45 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD FINAL DRIVE Unit: mm Check item Criteria Remedy Standard clearance Clearance limit Backlash between No. 2 planet carrier and motor 0.06 – 0.21 — Backlash between No. 2 planet 0.21 – 0.69 1.10 gear and No. 2 ring gear Backlash between No.

  • Page 46: Swing Circle

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING CIRCLE SWING CIRCLE 1. Swing circle inner race (No. of teeth:100) Specifications 2. Ball Reduction raito: – – 7.692 3. Swing circle outer race Amount of grease: 31 l (G2-LI) a. Inner race soft zone "S" position b.

  • Page 48: Swing Machinery

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MACHINERY SWING MACHINERY 10-16 PC600, 600LC-7...
  • Page 49 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MACHINERY 1. Swing pinion (No. of teeth: 13) Specifications 2. Cover 16+95 21+95 Reduction raito: 3. Case 4. Coupling 38.321 5. No. 2 planetary gear (No. of teeth: 36) 6. Ring gear (No. of teeth: 95) 7.

  • Page 50: Track Frame, Recoil Spring

    2. Track frame • No. of track rollers. 3. Carrier roller 4. Center frame 5. Final drive Model No. of rollers (each side) 6. Track roller 7. Track shoe PC600-7 8. Center guard PC600LC-7 10-18 PC600, 600LC-7...
  • Page 51 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRACK FRAME, RECOIL SPRING Unit: mm Check item Remedy Criteria Standard size Repair limit Installed Installed Free Installed Free length Recoil spring Replace length load length load x OD 292 kN 233.6 kN 859 x 299 —...

  • Page 52: Idler

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD IDLER IDLER 10-20 PC600, 600LC-7...
  • Page 53 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD IDLER Unit: mm Check item Criteria Remedy Standard size Repair limit Outside diameter of protruding part — Outside diameter of tread Rebuild or surface replace Thickness of tread 22.5 — Overall width — Width of tread —...

  • Page 54: Carrier Roller

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CARRIER ROLLER CARRIER ROLLER Unit: mm Check item Criteria Remedy Standard size Repair limit Outside diameter of flange — Outside diameter of tread Width of tread — Thickness of tread 53.5 — Width of flange —...

  • Page 55: Track Roller

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRACK ROLLER TRACK ROLLER Unit: mm Check item Criteria Remedy Standard size Repair limit Outside diameter of flange — Outside diameter of tread surface Rebuild or Thickness of tread 56.2 — replace Overall width — Inside width Width of tread Width of flange...

  • Page 56: Track Shoe

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRACK SHOE TRACK SHOE a P Portion shows the link of buhing press fitting end. 10-24 PC600, 600LC-7...
  • Page 57 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRACK SHOE Unit: mm Check item Criteria Remedy Standard size Repair limit Link pitch 228.6 231.6 Reverse or When turned replace Standard size Bushing outside diameter Normal load Impact load 72.5 67.5 — Standard size Repair limit Rebuild or Link height...
  • Page 58 Additional tightening Lower limit torque b. Master (Nm {kgm}) angle (deg.) (Nm {kgm}) link — — — No. of shoes (each side) PC600-7: 49 PC600LC-7: 52 — Tolerance Standard Standard size interference Interference between bushing Shaft Hole and link +0.050 –0.326...
  • Page 59 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRACK SHOE DOUBLE SHOE Unit: mm Check item Criteria Remedy Standard size Repair limit Height Height Thickness Rebuild or replace 36.5 Length at bottom 36.5 Length at top 10-27 PC600, 600LC-7...
  • Page 60 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRACK SHOE TRIPLE GROUSER SHOE Unit: mm Check item Criteria Remedy Standard size Repair limit Height Thickness Rebuild or Length of bottom replace 25.5 Length at tip 17.5 23.5 10-28 PC600, 600LC-7...
  • Page 61 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRACK SHOE Standard shoe Model PC600-7 PC600LC-7 Item Shoe width (mm) (triple shoe) Link pitch (mm) 228.6 228.6 No. of shoes (each side) Selection of track shoe • Select the most suitable track shoe from the following table...

  • Page 62: Hydraulic Piping Drawing

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PIPING DRAWING HYDRAULIC PIPING DRAWING 1. Bucket cylinder 2. Arm cylinder 3. Boom cylinder 4. Center swivel joint 5. Swing motor 6. Oil cooler 7. Control valve 8. PPC shuttle valve 9. Hydraulic filter 10.
  • Page 63 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PIPING DRAWING 10-31 PC600, 600LC-7...

  • Page 64: Hydraulic Tank, Hydraulic Filter

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC TANK, HYDRAULIC FILTER HYDRAULIC TANK, HYDRAULIC FILTER 10-32 PC600, 600LC-7...
  • Page 65 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC TANK, HYDRAULIC FILTER 1. Hydraulic filter 1A. Bypass valve 1B. Strainer 1C. Element 1D. Cooler check valve 2. Hydraulic tank 3. Suction strainer 4. Sight gauge 5. Oil filler cap Specifications Tank capacity: 500 l Amount of oil inside tank: 380 l (at H level) Safety valve •...

  • Page 66: Hydraulic Pump (Piston Pump)

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) HYDRAULIC PUMP (PISTON PUMP) No. 1 MAIN PUMP MODEL: HPV95+95 : Front pump discharge port 1. Front pump : Rear pump discharge port 2. Front servo valve PD11 : Drain port 3.
  • Page 67 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) No. 1 main pump PSV1 : Servo valve basic pressure port PSV2 : Servo valve basic pressure port PSV1A : Servo piston output port PSV1B : Servo valve output port PSV2A : Servo piston output port PSV2B : Servo valve output port 10-35 PC600, 600LC-7...
  • Page 68 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 1. Front shaft 8. Front end cap 15. Rear case 2. Front cradle 9. Coupling 16. Rocker cam 3. Front case 10. Impeller 17. Rear cradle 4. Rocker cam 11. Rear end cap 18.
  • Page 69 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) SERVO VALVE 1. Servo valve assembly (No. 1 front) : Main pump pressure IN port 1. CO+NC valve : TVC valve output pressure front, rear 2. Servo valve interconnection port PCO : CO selector pilot port : Jet sensor downstream pressure IN port : Jet sensor upstream pressure IN port : Servo actuator port...
  • Page 70 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 2. Servo valve (No. 1 front) : Main pump pressure OUT port PDR : CO+NC valve drain IN port PECN : CO+NC valve output pressure IN port 10-38 PC600, 600LC-7...
  • Page 71 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 3. Servo valve assembly (No. 1 rear) : Main pump pressure IN port 1. TVC valve : Main pump pressure IN port 2. CO+NC valve PCO : CO selector pilot port 3.
  • Page 72 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 4. Servo valve (No. 1 rear) : Main pump pressure OUT port : Main pump pressure OUT port PDR : CO+NC valve drain IN port PPO : Servo basic pressure OUT port PECN : CO+NC valve output pressure IN port 10-40 PC600, 600LC-7...
  • Page 73 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) Structure (The following illustration shows the servo valve for No. 1 rear.) 1. Locknut 7. Pin 13. Sleeve 2. Cover 8. Piston 14. Piston 3. Plug 9. Locknut 15. Spring 4. Spring 10.
  • Page 74 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 1) Operation in direction of increase of pump discharge amount (max. angle) Operation • The control pump pressure PPO is taken to port • At the same time, port a is interconnected with port h, so the pressure oil flows through port i to •...
  • Page 75 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 2) Operation in direction of decrease of pump discharge amount (min. angle) Operation • When signal pressure PECN goes down, piston • At the same time, port a is interconnected with (8) moves to the left and stops at a point where port d, so the oil flows through port g to servo pis- the pressure in chamber c balances the pressure...
  • Page 76 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) TVC VALVE PPO : Servo basic pressure IN port 1. Spring 5. Sleeve : Main pump pressure IN port 2. Spool 6. Piston : Main pump pressure IN port 3. Piston 7.
  • Page 77 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) Function • When the power mode is A-mode or E-mode, the • When the emergency pump drive switch is pump discharge amount is set properly with the turned ON, the pump discharge amount is con- command current sent from the controller ac- trolled according to the pump discharge pressure cording to the engine speed.
  • Page 78 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 2) When command current value from controller is large in A and E mode Operation • The command current sent from the controller • As a result, the oil flow from the control pump is moves push pin (9), which moves spool (2).
  • Page 79 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 3) When emergency pump drive switch is turned ON and pump load is small Operation • If the emergency pump drive switch is turned • Since main pump discharge pressures P1 and ON, the command current increases and the P2 are low, spring (1) keeps pressing spool (2) force of solenoid push pin (9) becomes larger.
  • Page 80 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 4) When emergency pump drive switch is turned ON and pump load is large Operation • When main pump discharge pressure P1 (or P2) increases, spool (2) is moved up by piston (4) or piston (6).
  • Page 81 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) CO+NC VALVE 1. CO+NC valve (No. 1 front) : Main pump pressure IN port : Jet sensor downstream pressure IN port PEFR : TVC valve output pressure front, rear inter- : Jet sensor upstream pressure IN port connection port PDR : CO+NC valve drain OUT port : TVC valve output pressure detection port...
  • Page 82 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 2. CO+NC valve (No. 1 rear) : Main pump pressure IN port (front) : Jet sensor downstream pressure IN port : Main pump pressure OUT port : Jet sensor upstream pressure IN port : Main pump pressure IN port (rear) PDRI : TVC valve drain IN port : Main pump pressure OUT port...
  • Page 83 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) CO valve NC valve 1. Plug 7. Plug 2. Piston 8. Sleeve 3. Spring 9. Piston 4. Spool 10. Spool 5. Piston 11. Spring 6. Plug 12. Plug 10-51 PC600, 600LC-7...
  • Page 84 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 3. CO valve Function • At the same time, it has a cut-off cancel function • When the load becomes large during operations actuated by the pilot pressure from the heavy-lift and the main pump discharge pressure rises to a solenoid valve.
  • Page 85 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 2) When main pump discharge pressure becomes close to relief pressure Operation • If the load increases and main pump discharge pressure P increases near to the relief pressure, main pump discharge pressure P presses piston (5).
  • Page 86 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 3) When cut-off function is canceled by heavy-lift solenoid valve Operation • If the heavy lift solenoid valve is turned ON, its pi- lot pressure PCO is lead in the port and piston (2) is pressed down.
  • Page 87 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 4. NC valve Function • The NC valve controls the main pump discharge • The main pump discharge amount is controlled amount to reduce the neutral loss and fine con- by balance of the sum of jet sensor upstream trol loss according to the moving distance of the pressure PT and NC valve output pressure control valve spool.
  • Page 88 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 2) When control lever is operated Operation • When the control lever is moved, the jet sensor differential pressure (PT – PD) goes down in ac- cordance with the movement of the control lever. Spool (11) is pushed up, and the area of the opening of port c and port b becomes larger.
  • Page 89 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) No. 2 MAIN PUMP MODEL: HPV95+95 : Front pump discharge port 1. Front pump : Rear pump discharge port 2. Front servo valve PD12 : Drain port 3. Rear servo valve PD22 : Drain port 4.
  • Page 90 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) No. 2 main pump PSV1 : Servo valve basic pressure port PSV2 : Servo valve basic pressure port PSV1A : Servo piston output port PSV1B : Servo valve output port PSV2A : Servo piston output port PSV2B : Servo valve output port 10-58 PC600, 600LC-7...
  • Page 91 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 1. Front shaft 8. Front end cap 15. Rear case 2. Front cradle 9. Coupling 16. Rocker cam 3. Front case 10. Impeller 17. Rear cradle 4. Rocker cam 11. Rear end cap 18.
  • Page 92 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) SERVO VALVE 1. Servo valve (No. 2 front) : Main pump pressure IN port 1. Servo valve : Main pump pressure IN port : Servo actuator port PDR : Servo valve drain OUT port PPO : Servo basic pressure IN port PECN : CO+NC valve output pressure IN port 10-60...
  • Page 93 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC PUMP (PISTON PUMP) 2. Servo valve (No. 2 rear) : Main pump pressure IN port 1. Servo valve : Servo actuator port PDR : Servo valve drain OUT port PPO : Servo basic pressure IN port PECN : CO+NC valve output pressure IN port 10-61 PC600, 600LC-7...

  • Page 94: Line Oil Filter

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD LINE OIL FILTER LINE OIL FILTER 1. Cover Outline 2. Element There are two line oil filters installed to the discharge 3. Case side of the main pump. They protect the circuit and equipment by removing all dirt and dust from the oil. A: From main pump B: To control valve 10-62...

  • Page 96: Control Valve

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE CONTROL VALVE Outline • This control valve consists of a 4-spool valve and a 5-spool valve, and a travel shuttle valve is also installed to it. Furthermore, a straight-travel valve, arm throttle valve, and swing priority valve are built in.
  • Page 97 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE 4-spool valve + 5-spool valve (with travel shuttle valve) 10-65 PC600, 600LC-7...
  • Page 98 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE Cross-sectional diagram (1/4) 1. Spool return spring 6. Jet sensor orifice 2. Spool (L.H. travel) 7. Jet sensor relief valve 3. Spool (boom Lo) 8. Main relief valve 4. Spool (bucket Lo) 9. Spool (straight-travel) 5.
  • Page 99 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE Unit: mm Check item Criteria Remedy Standard size Repair limit Installed Installed Free Installed Free length Replace Spool return spring x OD length load length load spring if 192 N 154 N damaged or 87.6 x 21.2 54.5 —...
  • Page 100 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE (2/4) 1. Spool return spring 6. Spool (R.H. travel) 2. Spool (swing) 7. Jet sensor relief valve 3. Spool (boom Hi) 8. Jet sensor orifice 4. Spool (service / bucket Hi) 9. Main relief valve 5.
  • Page 101 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE Unit: mm Check item Remedy Criteria Standard size Repair limit Replace Installed Installed Free Installed Free length spring if Spool return spring length load length load x OD damaged or deformed 104 N 83.4 N 53.8 x 26.5 52.5...
  • Page 102 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE (3/4) 1. Check valve 8. Spool (boom Lo) 2. Check valve spring 9. Check valve 3. Spool (L.H. travel) 10. Spool (boom Hi) 4. Spool (straight-travel) 11. Suction valve 5. Spool (swing priority) 12.
  • Page 103 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE (5/6) Unit: mm Check item Criteria Remedy Standard size Repair limit Installed Installed Free Installed Free length Check valve spring length load length load x OD 12.7 N 10.2 N 20.8 x 12.2 13.5 —...
  • Page 104 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE (4/4) 1. Suction-safety valve 7. Spool (arm Lo) 2. Spool (bucket Lo) 8. Suction-safety valve 3. Spool (arm throttle) 9. Check valve 4. Spool (service / bucket Hi) 10. Spool (R.H. travel) 5. Spool (arm Hi) 11.
  • Page 105 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE Unit: mm Check item Criteria Remedy Standard size Repair limit Installed Installed Free Installed Free length Spool return spring x OD length load length load 125 N 100 N 54.8 x 34.0 53.5 —...
  • Page 106 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE TRAVEL SHUTTLE VALVE : To straight-travel valve 1. Cover : From L.H. travel valve A1L port 2. Spool return spring : From L.H. travel valve B1L port 3. Body : From arm shuttle valve 4.
  • Page 107 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE Function • The travel shuttle valve is installed to the top of the 4-spool valve control valve. It brings the PPC valve pressures from the L.H. travel, work equip- ment, and swing. It also sends pilot pressure to the straight-travel valve when the travel and work equipment or travel and swing are operated at the same time.
  • Page 108 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE 2) During simultaneous operation Operation • When the arm and travel FORWARD are operat- • The pilot pressure oil from the swing PPC shuttle ed at the same time, pilot pressure oil flows from valve flows from port P5 port P0 straight-...
  • Page 109 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE STRAIGHT-TRAVEL VALVE Function • When the travel is operated at the same time as • To prevent this, the straight-travel valve is the boom, arm, or bucket, the pressure oil flow- switched to interconnect the left and right travel ing to the left and right travel circuits is divided circuits.
  • Page 110 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE 2. When travel and work equipment are operated at same time Operation • The pilot oil from the travel shuttle valve presses the spool of straight travel valve (1). • Accordingly, port PL is connected to the right and left travel motors and oil of the same quantity is fed to the right and left travel motors.
  • Page 111 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE SWING PRIORITY VALVE Function • When the swing and arm are operated at the • To overcome this, the swing priority valve is ac- same time, a large amount of the pressure oil tuated to throttle the pressure oil flowing to the flows to the arm circuit where the load is small, so arm Lo control valve in order to restrict the arm...
  • Page 112 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE 2. When swing is operated Operation • When the swing is operated, the pilot pressure oil from the travel shuttle valve pushes spool (1) of the swing priority valve to the left. • As a result, the pressure oil flowing from the front main pump through port PR to the arm Lo control valve is throttled, and the arm speed is restricted...
  • Page 113 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE ARM THROTTLE VALVE Function When arm and boom are operated at same time When arm and bucket are operated at same time • When the arm and boom are operated at the • The arm is actuated by the merged flow from two same time, a large amount of the pressure oil pumps and the bucket is actuated by the oil from...
  • Page 114 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CONTROL VALVE 2. When arm and boom or bucket are operated at same time Operation • When the arm and boom or bucket are operated at the same time, the pilot pressure oil from the travel shuttle valve pushes spool (1) of the arm throttle valve to the right.

  • Page 115: Swing Motor

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR SWING MOTOR MODEL: KMF90ABE-3 (with reverse prevention valve) : To tank Specifications : From control valve Model: KMF90ABE-3 : From control valve Theoretical delivery: 87.8 cc/rev : From control valve Safety valve set pressure: 25.5 MPa {260 kg/cm : From swing brake solenoid valve Rated speed: 2,320 rpm Brake release pressure: 2.06 MPa {21.0 kg/cm...
  • Page 116 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR 1. Drive shaft 8. Housing 15. Safety valve 2. Spacer 9. Reverse prevention valve 16. Check valve 3. Case 10. Center spring 17. Check valve spring 4. Disc 11. Cylinder block 18. Shuttle valve 5.
  • Page 117 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR Unit: mm Check item Criteria Remedy Standard size Repair limit Installed Installed Free Installed Free length Replace Check valve spring x OD length load length load spring if 3.04 N 2.45 N damaged or 62.5 x 20.0 —...
  • Page 118 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR SWING BRAKE Operation 1. When swing brake solenoid valve is de-ener- gized • If the swing brake solenoid valve is de-ener- gized, the flow of pressurized oil from the control pump is shut off, and port B is connected to the tank circuit.
  • Page 119 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR SAFETY VALVE Outline • The safety valve portion consists of check valves (2) and (3), shuttle valves (4) and (5), and relief valve (1). Function • When the swing is stopped, the outlet port circuit of the motor is closed by the control valve, but the motor continues to be turned by the inertia of the swing.
  • Page 120 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR 2. When stopping swing • When the swing control lever is returned to the neutral position, no more pressurized oil is sup- plied from the pump to port MA. At the same time, the oil from the outlet port of the motor re- turns from the control valve to the tank, and the circuit is closed.
  • Page 121 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR REVERSE PREVENTION VALVE : Port 1. Valve body : Port 2. Spool (MA side) : Port 3. Spring (MA side) : Port 4. Plug (MA side) 5. Spool (MB side) 6. Spring (MB side) 7.
  • Page 122 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR Explanation of effect 10-90 PC600, 600LC-7...
  • Page 123 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SWING MOTOR 1. Function When the swing is stopped, this valve reduces the rocking motion of the swing body due to the inertia of the swing body, backlash of the machinery system, the compressibility of the hydraulic oil, etc.

  • Page 124: Center Swivel Joint

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD CENTER SWIVEL JOINT CENTER SWIVEL JOINT 1. Cover A1. From control valve port A5R D1. From control valve port B1L 2. Body A2. To R.H. travel motor port PB D2. To L.H. travel motor port PB 3.

  • Page 125: Travel Motor

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR TRAVEL MOTOR MODEL: KMV335ADT :From travel speed solenoid valve Specifications :To tank Model: KMV335ADT PA :From control valve Theoretical delivery: Minimum 217 cc/rev PB :From control valve Maximum 336 cc/rev Brake release pressure: 1.27 ±...
  • Page 126 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR 1. Output shaft 8. Plug 15. Spool return spring 2. Motor case 9. Regulator piston 16. Safety valve 3. Piston 10. Plate 17. Regulator valve 4. Cylinder block 11. Disc 18. Spring 5. Valve plate 12.
  • Page 127 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR Unit: mm Check item Criteria Remedy Standard size Repair limit Installed Installed Free Installed Free length Spool return spring x OD length load length load Replace 427 N 341 N 62.5 x 32 42.0 —...
  • Page 128 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR 1. At low speed (motor swash plate angle at maximum) Operation • When the solenoid valve is de-energized, the pi- • Because of this, propulsion force equal to the dif- lot pressure oil from the control pump does not ference in area of chambers a and b (Ab –...
  • Page 129 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR 2. At high speed (motor swash plate angle at minimum) Operation • When the solenoid valve is energized, the pilot • As a result, valve plate (5) and cylinder block (4) pressure oil from the control pump flows to port move in the minimum swash plate angle direc- P, and pushes regulator valve (17) down.
  • Page 130 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR PARKING BRAKE 1. When starting to travel Operation • When the travel lever is operated, the pressu- rized oil from the pump actuates counterbalance valve spool (14), opens the circuit to the parking brake, and flows into chamber e of brake piston (20).
  • Page 131 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR 2. When stopping travel Operation • When the travel lever is placed in neutral, coun- • As a result, plate (10) and disc (11) are pushed terbalance valve spool (14) returns to the neutral together, and the brake is applied.
  • Page 132 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR BRAKE VALVE Operation of brake valve • The brake valve consists of a check valve, coun- terbalance valve, and safety valve in a circuit as shown in the diagram on the right. • The function and operation of each component is as given below.
  • Page 133 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR Operation of brake when traveling downhill • If the machine tries to run away when traveling downhill, the motor will turn under no load, so the pressure at the motor inlet port will drop, and the pressure in chamber S1 through orifices E1 and E2 will also drop.
  • Page 134 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR 2) When pressure in chamber MA has become high (when rotating counterclockwise) • When the travel is stopped (or when traveling downhill), chamber MA in the outlet port circuit is closed by the check valve of the counterbalance valve, but the pressure at the outlet port rises be- cause of inertia.
  • Page 135 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL MOTOR SET PRESSURES VARYING MECHANISM 1. When starting travel (high-pressure setting) • When the travel lever is operated, the pressu- rized oil from the pump actuates counterbalance valve spool (14), and opens the pilot circuit to the safety valve.

  • Page 136: Valve Control

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD VALVE CONTROL VALVE CONTROL Lever positions 1. Travel PPC valve 10. Solenoid valve A. NEUTRAL H. Arm OUT 2. Service PPC valve 11. Control valve B. Boom RAISE J. Swing right 3. Service pedal 12. Hydraulic pump C.

  • Page 138: Work Equipment, Swing Ppc Valve

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD WORK EQUIPMENT, SWING PPC VALVE WORK EQUIPMENT, SWING PPC VALVE P : From safety lock solenoid valve P1 :L. H. PPC: Arm OUT/R.H. PPC: Boom LOWER T : To tank P2 :L. H. PPC: Arm IN/R.H. PPC: Boom RAISE P3 :L.
  • Page 139 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD WORK EQUIPMENT, SWING PPC VALVE 1. Spool 7. Joint 2. Metering spring 8. Plate 3. Centering spring 9. Retainer 4. Piston 10. Body 5. Disc 11. Filter 6. Nut (for connecting lever) Unit: mm Check item Criteria Remedy Standard size...
  • Page 140 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD WORK EQUIPMENT, SWING PPC VALVE Operation 1. At neutral Ports A and B of the control valve and ports P1 and P2 of the PPC valve are connected to drain chamber D through fine control hole f in spool (1).
  • Page 141 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD WORK EQUIPMENT, SWING PPC VALVE 3. Fine control (control lever returned) When disc (5) starts to be returned, spool (1) is pushed up by the force of centering spring (3) and the pressure at port P1. Because of this, fine control hole f is connected to drain chamber D, and the pressurized oil at port P1 is released.

  • Page 142: Travel Ppc Valve

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL PPC VALVE TRAVEL PPC VALVE P : From main pump P1 : L.H. travel REVERSE T : To tank P2 : L.H. travel FORWARD P3 : R.H. travel REVERSE P4 : R.H. travel FORWARD a The travel PPC valve operates similarly to the work equipment and swing PPC valves.
  • Page 143 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TRAVEL PPC VALVE 1. Plate 4. Collar 2. Body 5. Valve 3. Piston Unit: mm Check item Criteria Remedy Standard size Repair limit Installed Installed Free Installed Free length Replace Centering spring x OD length load length load...

  • Page 144: Service Ppc Valve

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SERVICE PPC VALVE SERVICE PPC VALVE 1. Spool 2. Metering spring 3. Centering spring 4. Piston 5. Lever 6. Plate 7. Retainer 8. Body T : To tank P : From main pump P1 : Port P2 : Port a The service PPC valve operates similarly to the work equipment and swing PPC valves.

  • Page 145: Ppc Accumulator

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD PPC ACCUMULATOR PPC ACCUMULATOR SBP00290 Specifications Actual gas volume: 500 cc 1. Gas plug 2. Shell 3. Poppet 4. Holder 5. Bladder 6. Oil port 10-113 PC600, 600LC-7...

  • Page 146: Ppc Shuttle Valve

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD PPC SHUTTLE VALVE PPC SHUTTLE VALVE For arm, swing 1. Plug 2. Body 3. Ball a. P1B port (right swing) b. P5 port (travel shuttle valve) c. P2B port (left swing) d. P4B port (arm OUT) e.

  • Page 147: Solenoid Valve

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SOLENOID VALVE SOLENOID VALVE FOR CO CANCEL, 2-STAGE RELIEF, BOOM HI 2-STAGE SAFETY VALVE, TRAVEL SPEED, SWING BRAKE SOLENOID VALVE 1. CO cancel solenoid valve : To tank 2. 2-stage relief solenoid valve : To No. 1 pump (NC valve) 3.
  • Page 148 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SOLENOID VALVE 1. Connector 2. Movable core 3. Coil 4. Cage 5. Spool 6. Block 7. Spring Operation When solenoid is de-energized • When the signal current does not flow from the PPC lock switch or swing lock switch, solenoid (3) is de-energized.
  • Page 149 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SOLENOID VALVE BUCKET CURL HI CANCEL 1. Connector 2. Movable iron core 3. Coil 4. Spool 5. Body 6. Spring 7. Plug Operation When solenoid is de-energized • The signal current does not flow from the control- ler, so coil (3) is de-energized.
  • Page 150 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SOLENOID VALVE For safety lock (under cab) 1. Safety lock solenoid valve T : To tank A : To port P of work equipment PPC valve To port P of travel PPC valve P : From control pump 10-118 PC600, 600LC-7...
  • Page 151 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SOLENOID VALVE 1. Connector 7. Spool 2. Solenoid 8. Body 3. Variable iron core 9. Plug 4. Body 10. Spring 5. Plug 11. Spool 6. Spring Operation When solenoid is de-energized • No signal current flows from the PPC hydraulic lock switch, so solenoid (2) is de-energized.

  • Page 152: Boom Holding Valve

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD BOOM HOLDING VALVE BOOM HOLDING VALVE 1. Safety-suction valve : To tank 2. Pilot spring : From control valve 3. Pilot spool CY : To boom cylinder bottom 4. Poppet spring : From PPC valve (pilot pressure) 5.
  • Page 153 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD BOOM HOLDING VALVE 1. At boom RAISE Operation • When the boom is raised, the main pressure from the control valve pushes poppet (5) up. Because of this, the main pressure from the control valve passes through the valve and flows to the bottom end of the boom cylinder.
  • Page 154 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD BOOM HOLDING VALVE 2. Boom lever at HOLD Operation • When the boom is raised and the control lever is returned to HOLD, the circuit for the holding pressure at the bottom end of the boom cylinder is closed by poppet (5).
  • Page 155 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD BOOM HOLDING VALVE 3. At boom LOWER Operation • When the boom is lowered, the pilot pressure flows to port PI from the PPC valve pushes pilot spool (3) and the pressurized oil in chamber b in- side the poppet is drained.

  • Page 156: Boom Lower Regeneration Valve

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD BOOM LOWER REGENERATION VALVE BOOM LOWER REGENERATION VALVE : To tank PB : From boom cylinder bottom PM : From boom cylinder head : From boom LOWER PPC valve 10-124 PC600, 600LC-7...
  • Page 157 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD BOOM LOWER REGENERATION VALVE 1. Body 2. Spool 3. Check valve 4. Spring Unit: mm Check item Criteria Remedy Standard size Repair limit Installed Installed Free Installed Free length Spring (check valve) length load length load x OD Replace...
  • Page 158 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD BOOM LOWER REGENERATION VALVE Function • When the boom is lowered, some of the oil drained from the bottom end of the boom cylinder is circulated to the cylinder head to increase the lowering speed of the boom. Operation •...

  • Page 160: Hydraulic Cylinder

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC CYLINDER HYDRAULIC CYLINDER BACKHOE SPECIFICATION BOOM CYLINDER ARM CYLINDER BUCKET CYLINDER 10-128 PC600, 600LC-7...
  • Page 161 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD HYDRAULIC CYLINDER Unit: mm Check item Remedy Criteria Tolerance Name of Standard Standard Clearance cylinder size clearance limit Shaft Hole Clearance –0.036 +0.263 0.084 – Boom 0.453 between –0.090 +0.048 0.353 Replace piston rod and bushing –0.043 +0.256...

  • Page 162: Work Equipment

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD WORK EQUIPMENT WORK EQUIPMENT BACKHOE SPECIFICATION 10-130 PC600, 600LC-7...
  • Page 163 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD WORK EQUIPMENT Unit: mm Check item Criteria Remedy Tolerance Standard Standard Clearance Clearance between bushing size clearance limit Shaft Hole and mounting pin of boom and revolving frame –0.043 +0.148 0.100 – –0.106 +0.057 0.254 Clearance between bushing –0.043 +0.407...

  • Page 164: Dimensions Of Work Equpment

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD DIMENSIONS OF WORK EQUPMENT DIMENSIONS OF WORK EQUPMENT BACKHOE SPECIFICATION 1. ARM 10-132 PC600, 600LC-7...
  • Page 165 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD DIMENSIONS OF WORK EQUPMENT Unit: mm Model PC600, PC600LC-7 2.9 m Arm 3.5 m Arm 4.3m Arm 5.2m Arm 627.7 666.9 460.6 321.7 1,188.9 1,187.2 1,182.7 1,178.6 2,863.2 3,465.2 4,256.6 5,188.1 3,624 3,324.2 3,315.9 3,308.2 471.3...
  • Page 166 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD DIMENSIONS OF WORK EQUPMENT 2. BUCKET 10-134 PC600, 600LC-7...
  • Page 167 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD DIMENSIONS OF WORK EQUPMENT Unit: mm Model PC600-7, PC600LC-7 2.0 m , 2.3m , 2.7m Bucket 3.5 m Bucket 605.2 ± 0.5 665 ± 0.5 58.1 ± 0.5 132.5 ± 0.5 95.5° 101.3° 2,119.9 2,150.4 277.9...

  • Page 168: Air Conditioner

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD AIR CONDITIONER AIR CONDITIONER AIR CONDITIONER PIPING For the electric circuit diagram of the air conditioner, see Chapter 90. 1. Air conditioner unit A : Fresh air 2. Duct B : Recirculated air 3. Refrigerant piping C : Hot air/cold air 4.

  • Page 169: Engine Control

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE CONTROL ENGINE CONTROL 1. Operation of system Starting engine • When the starting switch is turned to the START position, the starting signal flows to the starting motor, and the starting motor turns to start the engine.
  • Page 170 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE CONTROL 2. Components of system Fuel control dial 1. Knob 2. Dial 3. Spring 4. Ball 5. Potentiometer 6. Connector Function • The fuel control dial is installed at the bottom of the monitor panel. A potentiometer is installed under the knob, and when the knob is turned, it rotates the potentiometer shaft.
  • Page 172 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE CONTROL 3. Engine controller 10-140 PC600, 600LC-7...
  • Page 173 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE CONTROL Input and output signals CN1 [CN-E11] CN2 [CN-E12] Input/ Input/ Pin No. Signal name Pin No. Signal name Output Output CN1-1 POWER (+24V constant) CN2-1 GND CN1-2 POWER (+24V constant) CN2-2 NC CN1-3 Model selection 1 Input CN2-3 NC Input...
  • Page 174 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE CONTROL CN3 [CN-E13] Input/ Pin No. Signal name Output CN3-1 Power supply for power CN3-2 Power supply for power CN3-3 NC CN3-4 NC CN3-5 Injector #3 (+) Output CN3-6 Injector #2 (+) Output CN3-7 NC Input CN3-8 (Output mode selection 1 (Test mode)) Input...

  • Page 175: Machine Control System

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM MACHINE CONTROL SYSTEM OFF (Cancel) Auto deceleration function 2-mode selector type torque control Cut-off control Electronic OLSS function Flow control Power max. function Heavy-lift function Machine control system ON (low pressure) (Digging improvement mode) 2-stage boom pushing force selector function OFF (high pressure) (Machine push-up mode)
  • Page 176 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM MACHINE CONTROL SYSTEM DIAGRAM 10-144 PC600, 600LC-7...
  • Page 177 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 10-145 PC600, 600LC-7...
  • Page 178 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 1. Auto deceleration function Function • If all the control levers are at neutral when wait- ing for work or waiting for a dump truck, the en- gine speed is automatically reduced to a midrange speed to reduce fuel consumption and noise.
  • Page 179 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM Operation 1. When auto-deceleration switch is turned ON Control levers at neutral When control lever is operated • If the engine is running at above the deceleration • If any control lever is operated when the engine actuation speed (approx.
  • Page 180 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 2. Electronic OLSS function Pump control system • Interconnected control of all pumps is carried out by one TVC valve. • A mode: Total horsepower control by engine speed sensing E mode: Total horsepower control by engine speed sensing •...
  • Page 181 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 1) Control method in each mode A, E mode • Matching point in A, E mode: Rated output point Model PC600, PC600LC-7 Mode 287 kW/1,800 rpm {385 HP/1,800 rpm} 247 kW/1,720 rpm {331 HP/1,720 rpm} •...
  • Page 182 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 2) Cut-off function • If the load during operation increases and the pump discharge pressure rises to near the relief pressure, the main pump cut-off valve is actuat- ed to reduce the relief loss. 3) Cut-off cancel function •...
  • Page 183 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 3. Power max. function Function • This is a function to increase the power for a fixed period when the L.H. knob switch is opre- Power max. rated. It makes it possible to obtain a sudden switch burst of power to match the working conditions.
  • Page 184 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 4. Heavy-lift function Outline • This function increases the boom lifting power by approx. 8%. • It can be actuated only when the boom RAISE is being actuated independently. If the arm IN and bucket DUMP are operated at the same time, the heavy-lift function is automatically canceled.
  • Page 185 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM Operation Lever operation Heavy-lift Main relief Heavy-lift Boom lifting solenoid valve set CO valve Operate arm switch force Boom RAISE valve pressure or bucket 31.9 MPa Operated — De-energized Actuated Normal {325 kg/cm 34.3 MPa Neutral Energized...
  • Page 186 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 5. 2-stage boom pushing force selector function Outline • This function switches the pushing force of the boom. It is aimed to provide both increased dig- ging efficiency by reducing the digging resist- ance of the boom, and increased ease of operation by increasing the thrusting force for ex- cavation, digging square holes, carrying out twist...
  • Page 187 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM Operation • This function acts to change the set pressure of the safety valve at the boom cylinder end of the R.H. 4-spool control valve boom Lo in 2 ways: to low pressure (14.7 MPa {150 kg/cm }) and high pressure (33.3 MPa {340 kg/cm Machine push-up...
  • Page 188 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 6. Swing control function Function • The system is provided with a swing lock and swing holding brake function. 10-156 PC600, 600LC-7...
  • Page 189 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM Swing lock, swing holding brake function a Swing brake solenoid valve • The swing lock (manual) can be locked at any desired position, and the swing lock and swing For details of the structure and function, see holding brake (automatic) are interconnected SOLENOID VALVE.
  • Page 190 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 7. Engine automatic warming-up, overheat prevention function, turbo protect function, split injection function Function • If the water temperature is low, this automatically raises the engine speed to warm up the engine after it is started.
  • Page 191 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 1) Engine automatic warming-up function • After the engine is started, if the engine coolant temperature is low, the engine speed is automat- ically raised to warm up the engine. 2) Engine overheat prevention function •...
  • Page 192 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 3) Turbo protection function Function to protect turbocharger bearing during cold weather by keeping engine speed below fixed speed when engine is started. Actuation condition Engine water Turbo protect time temperature (sec) More than +10°C Gradually changes +10°C to –10°C...
  • Page 193 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 8. Travel control function Outline • The pump absorption torque is increased when traveling to increase the drawbar pull. • Switching between manual and automatic travel speed selection is used to improve the travel per- formance.
  • Page 194 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM Travel speed selection function 1) Manual selection using travel speed switch If the travel speed switch is set to Lo, Hi, the Travel speed pump controller controls the pump flow and switch (Low speed) (High speed) motor volume at each speed range as shown on...
  • Page 195 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM Components of system 1) Engine speed sensor 1. Wire Function 2. Magnet • The engine speed sensor is installed to the ring 3. Terminal gear portion of the engine flywheel. It counts elec- 4.
  • Page 196 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 3) TVC prolix resistor 1. Resistor 2. Connector Specification Function Resistance: 20 z • This resistor acts to allow a suitable current to flow to the TVC solenoid when the TVC prolix switch is ON.
  • Page 198 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM 7) Pump controller 10-166 PC600, 600LC-7...
  • Page 199 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM Input and output signals CN1 [CN-C01] CN2 [CN-C02] Input/ Input/ Pin No. Signal name Pin No. Signal name Output Output CN1-1 NC Input CN2-1 NC Output CN1-2 R pump pressure sensor Input CN2-2 Swing prolix switch Input CN1-3 NC...
  • Page 200 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MACHINE CONTROL SYSTEM CN3 [CN-C03] Input/ Pin No. Signal name Output CN3-1 VB (Controller PWR) Input CN3-2 VIS (Solenoid PWR) Input CN3-3 TVC solenoid (–) Input CN3-4 Battery relay drive Output CN3-5 Step light power holding relay Output CN3-6 NC Output...

  • Page 201: Monitor System

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM MONITOR SYSTEM • The monitor system monitors the condition of the machine with sensors installed on various parts of the machine. It processes and immediately displays the obtained information on the panel notifying the operator of the condition of the ma- chine.
  • Page 202 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM MONITOR PANEL Outline • The monitor panel has the functions to display various items and the functions to select modes and electric parts. The monitor panel has a CPU (Central Process- ing Unit) in it to process, display, and output the information.
  • Page 203 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM Input and output signals Input/ Input/ Signal name Signal name output output Key switch (Battery) Input Input Key switch (Battery) Input Input Washer motor output Output Input Key switch (Terminal C) Input Input Wiper contact W (Lower wiper contact P) Input Input...
  • Page 204 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM MONITOR CONTROL, DISPLAY PORTION MONITOR PORTION 1. Wiper motor 11. Fuel level monitor 2. Preheating monitor 12. Hydraulic oil temperature monitor 3. Swing lock monitor 13. Power Max. monitor 4. Engine water temperature monitor 14.
  • Page 205 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM MONITOR ITEMS AND DISPLAY Symbol Display item Display method Swing holding brake Swing lock switch Swing lock monitor release switch Swing lock Flashes SAT00098 Continuous set time Preheating monitor status Up to 30 sec. Preheating From 30 sec.
  • Page 206 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM Gauge Range Temperature, volume Indicator Buzzer sound Green Engine water temperature (°C) Green Green White Green Hydraulic oil tempera- ture (°C) Green Green White Green Green Green Fuel level (l) Green Green 10-174 PC600, 600LC-7...
  • Page 207 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM Checks before starting (caution lamps all light up), when maintenance interval is exceeded. If the checks before starting or maintenance interval is exceeded items light up, the display of the hydraulic oil temperature gauge and the hydraulic oil temperature monitor are stopped, and the following cautions are dis- played.
  • Page 208 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM Display category Symbol Display item Display range Display method Wiper Displays set condition Working mode Displays set mode Monitor Travel speed Displays set speed Auto-decelera- Displays actuation tion status Service meter Lights up when service Service meter When service meter is working indicator...
  • Page 209 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM SWITCHES 1. Working mode selector switch 2. Display brightness, contrast adjustment switch 3. Control switch 4. Window washer switch 5. Wiper switch 6. Maintenance switch 7. Travel speed selector switch 8. Auto-deceleration switch 10-177 PC600, 600LC-7...
  • Page 210 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM • Working mode selector switch The condition of the machine changes accord- Switch that is Working mode status Display ing to the switch that is pressed (Shown in the pressed after setting figure at right). It is possible to check the condi- A mode (default) tion on the working mode monitor display.
  • Page 211 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM MAINTENANCE FUNCTION When the maintenance time for replacement, inspection, or filling has approached for the 10 main- tenance items, press maintenance switch (1) and the caution display (yellow or red) appears on the monitor display for 30 seconds after the key is turned ON to remind the operator to carry out lubri- cation maintenance.
  • Page 212 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM METHOD OF CHECKING STATUS MAINTENANCE ITEMS a Operate as follows when on the operator screen. 1. Press maintenance switch (1) and switch to the maintenance list display screen. a The maintencance items are displayed as symbols on the screen.
  • Page 213 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM BRIGHTNESS, CONTRAST ADJUSTMENT FUNCTION This function is used to adjust the brightness and contrast of the display. Adjustment method a Operate as follows when on the operator screen. 1. Press display brightness/contrast adjustment switch (1) and switch to the adjustment screen.
  • Page 214 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM SERVICE METER CHECK FUNCTION • When the starting switch is at the OFF position, keep return switch (1) and control switch (2) of the monitor pressed at the same time, and the service meter is shown on the display. •...
  • Page 215 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD MONITOR SYSTEM • While the user code is being displayed, if the in- put cnfirmation switch is pressed, the service code and failure code can be displayed. • If there is more than one service code or failure code, the display switchs every 2 seconds and displays all the service codes/failure codes that caused the user code to be displayed.

  • Page 216: Sensors

    STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SENSORS SENSORS • The signals from the sensors are input directly to The contact type sensors are always connected the engine controller and the pump controller at one end to the chassis GND. monitor. Name of sensor Type of sensor When normal When abnormal...
  • Page 217 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SENSORS Engine oil level sensor 1. Connector 2. Bracket 3. Float 4. Switch Engine oil pressure sensor 1. Plug 2. Contact ring 3. Contact 4. Diaphragm 5. Spring 6. Terminal Air cleaner clogging sensor 10-185 PC600, 600LC-7...
  • Page 218 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SENSORS Fuel level sensor 1. Float 2. Connector 3. Cover 4. Variable resistor Coolant temperature sensor Hydraulic oil temperature sensor 1. Thermistor 4. Tube 2. Body 5. Wire 3. Tube 6. Connector 10-186 PC600, 600LC-7...
  • Page 219 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD SENSORS Main pump oil pressure sensor (0 – 49.0 MPa {0 – 500 kg/cm 1. Sensor 2. Connector FUNCTION • The pump pressure sensor is installed to the inlet circuit of the control valve. It converts the pump discharge pressure into a voltage and transmits it to the pump controller.
  • Page 221 90 OTHERS HYDRAULIC CIRCUIT DIAGRAM ........................90- 3 ELECTRICAL CIRCUIT DIAGRAM (1/5) ......................90- 5 ELECTRICAL CIRCUIT DIAGRAM (2/5) ......................90- 7 ELECTRICAL CIRCUIT DIAGRAM (3/5) ......................90- 9 ELECTRICAL CIRCUIT DIAGRAM (4/5) ......................90- 11 ELECTRICAL CIRCUIT DIAGRAM (5/5) ......................90- 13 ELECTRICAL CIRCUIT FOR AIR CONDITIONER..................90- 15 90-1 PC750, 800-7...

  • Page 223: Hydraulic Circuit Diagram

    HYDRAULIC CIRCUIT DIAGRAM 90-3 PC600, 600LC-7...

  • Page 224: Electrical Circuit Diagram (1/5)

    ELECTRICAL CIRCUIT DIAGRAM (1/5) 90-5 PC600, 600LC-7...

  • Page 225: Electrical Circuit Diagram (2/5)

    ELECTRICAL CIRCUIT DIAGRAM (2/5) 90-7 PC600, 600LC-7...

  • Page 226: Electrical Circuit Diagram (3/5)

    ELECTRICAL CIRCUIT DIAGRAM (3/5) 90-9 PC600, 600LC-7...

  • Page 227: Electrical Circuit Diagram (4/5)

    ELECTRICAL CIRCUIT DIAGRAM (4/5) 90-11 PC600, 600LC-7...

  • Page 228: Electrical Circuit Diagram (5/5)

    ELECTRICAL CIRCUIT DIAGRAM (5/5) 90-13 PC600, 600LC-7...

  • Page 229: Electrical Circuit For Air Conditioner

    ELECTRICAL CIRCUIT FOR AIR CONDITIONER 90-15 PC600, 600LC-7...

This manual is also suitable for:

Pc600-7

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