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PC350HD-8 A00001 This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu America Corp. It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or add improvements at any time without incurring any obligation to install such changes on products sold previously.
FOREWORD CONTENTS CONTENTS GENERAL ............. 01-1 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD .
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FOREWORD The affected pages are indicated by using the following Mark Indication Action marks. It is requested that necessary actions be taken to ❍ New page to be added these pages according to the table below. ● Page to be replaced Replace Page to be deleted Discard...
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FOREWORD Mark Page Mark Page Mark Page Mark Page 00-2-10 PC350LC/HD-8...
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FOREWORD SAFETY SAFETY Safety Notice IMPORTANT SAFETY NOTICE Proper service and repair is extremely important for the safe operation of your machine. The service and repair techniques recommended and described in this manual are both effective and safe methods of operation. Some of these operations require the use of tools specially designed for the purpose.
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FOREWORD SAFETY When disassembling or assembling, support the machine with blocks, jacks or stands before starting work. Remove all mud and oil from the steps or other places used to get on and off the machine. Always use the handrails, lad- ders or steps when getting on or off the machine.
FOREWORD GENERAL 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 judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
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FOREWORD HOW TO READ THE SHOP MANUAL HOW TO READ THE SHOP MANUAL Volumes Revisions Shop manuals are issued as a guide to carrying out repairs. Revised pages are shown at the LIST OF REVISED PAGES They are divided as follows: between the title page and SAFETY page.
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FOREWORD HOISTING INSTRUCTIONS HOISTING INSTRUCTIONS Hoisting can result. Hooks have maximum strength at the middle portion. WARNING! Heavy parts (25 kg or more) must be lifted with a hoist etc. In the DISASSEMBLY AND ASSEMBLY section, every part weighing 25 kg or more is indicated clearly with the sym- bol.
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FOREWORD PUSH PULL COUPLER PUSH PULL COUPLER WARNING! Before carrying out the following work, release the residual pressure from the hydraulic tank. For details, see TESTING AND ADJUSTING, Releasing residual pres- sure from hydraulic tank. WARNING! Even if the residual pressure is released from the hydraulic tank, some hydraulic oil flows out when the hose is disconnected.
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FOREWORD PUSH PULL COUPLER Type 2 Disconnection Hold the mouthpiece of the tightening portion and push body (2) in straight until sliding prevention ring (1) contacts contact surface a of the hexagonal portion at the male end. Hold in the condition in Step 1, and turn the lever (4) to the right - clockwise.
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FOREWORD PUSH PULL COUPLER Type 3 Disconnection Hold the mouthpiece of the tightening portion and push the body (2) in straight until sliding prevention ring (1) contacts surface a of the hexagonal portion at the male end. Hold in the condition in Step 1, and push until the cover (3) contacts surface a of the hexagonal portion at the male end.
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FOREWORD COATING MATERIALS COATING MATERIALS ★ The recommended coating materials prescribed in the shop manuals are listed below. Category Code Part No. Quantity Container Main applications, features ● Used to prevent rubber gaskets, rubber LT-1A 790-129-9030 150 g Tube cushions and cork plugs from coming out ●...
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FOREWORD COATING MATERIALS Category Code Part No. Quantity Container Main applications, features ● Features: Resistance to water, oil ● Used as sealant for flange surface, thread. ● Also possible to use as sealant for flanges LG-4 790-129-9020 200 g Tube with large clearance.
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FOREWORD STANDARD TIGHTENING TORQUE STANDARD TIGHTENING TORQUE Standard Tightening Torque of Bolts And Nuts The following charts give the standard tightening torques of bolts and nuts. Exceptions are given in DISASSEMBLY AND ASSEMBLY. Thread diameter of bolt Width across flats N•m lbf ft 11.8 - 14.7...
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FOREWORD STANDARD TIGHTENING TORQUE Tightening Torque of Hose Nuts Use these torques for hose nuts. Thread diameter Width across flat Tightening torque Nominal No. N•m lbf ft 19.6 - 29.4 14.5 - 21.7 29.4 - 68.6 21.7 - 50.6 58.9 - 98.1 44.4 - 72.4 107.9 - 166.7 79.6 - 123.0...
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FOREWORD STANDARD TIGHTENING TORQUE Table of Tightening Torques for O-ring Boss Piping Joints ★ Unless there are special instructions, tighten the O-ring boss piping joints to the torque below. Thread diameter Width across flat Tightening torque (N•m {lbf ft}) Norminal No. Range Target 35 - 63 {25.81 - 46.46}...
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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: 05WB indicates a cable having a nominal number 05 and white coating with black stripe. Classification by Thickness Copper wire Nominal num-...
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FOREWORD CONVERSION TABLES CONVERSION TABLES 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 ●...
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FOREWORD CONVERSION TABLES Temperature Fahrenheit Centigrade Conversion; a simple way to convert a Fahrenheit temperature reading into a Centigrade temperature reading or vise versa is to enter the accompanying table in the center or boldface column of figures. These figures refer to the temperature in either Fahrenheit or Centigrade degrees.
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GENERAL SPECIFICATION DIMENSION DRAWINGS ........... 01-2 Dimensions .
GENERAL SPECIFICATIONS SPECIFICATIONS Machine model PC350LC-8 PC350HD-8 Serial Number A10001 and up A00001 and up Bucket capacity m³ Operating weight 32,930 36,836 Max. digging depth 7,380 7,277 6,377 Max. vertical wall depth 6,480 Max. digging reach 11,100 11,100 Max. reach at ground level...
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GENERAL SPECIFICATIONS Machine model PC350LC-8 PC350HD-8 Serial Number A10001 and up A00001 and up Model SAA6D114E-3 Type 4-cycle, water-cooled, in-line, vertical, direct injection, with turbocharger and aftercooler No. of cylinders - bore x stroke 6 - 114 x 135 Piston displacement L {cc} 8.27 {8,270}...
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GENERAL SPECIFICATIONS *1: Cushion is provided on head side *2: Cushion is provided on bottom side 01-6 PC350LC/HD-8...
GENERAL WEIGHT TABLE WEIGHT TABLE WARNING! This weight table is for use when handling components or when transporting the machine. Unit: kg Machine model PC350LC-8 PC350HD-8 Serial Number A10001 and UP A00001 and UP Engine assembly 1,148 1,148 • Engine •...
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GENERAL WEIGHT TABLE Unit: kg Machine model PC350LC-8 PC350HD-8 Serial Number A10001 and UP A00001 and UP Track shoe assembly • Standard triple grouser shoe (600 mm) 3,700 4,760 • Standard triple grouser shoe (700 mm) 4,300 5,210 • Wide triple grouser shoe (800 mm)
ASTM: American Society of Testing and Material Final drive case Swing Engine oil Damper Hydraulic Cooling (each) machinery Fuel tank case system system case PC350LC-8 PC350HD-8 liter 16.5 10.5 Specified capacity US gal 10.57 4.36 2.38 2.77 0.34 96.43 8.45 159.84...
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Komatsu machines are supplied with Komatsu Supercoolant AF-NAC. Komatsu Supercoolant AF-NAC has excellent anticorrosion, antifreeze and cooling properties and can be used continuously for 2 years or 4000 hours. Komatsu Supercoolant AF-NAC is strongly recommended wherever available and required if machine is not equipped with a corrosion resistor.
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STRUCTURE, FUNCTION AND MAINTENANCE STANDARD TABLE OF CONTENTS System Diagram ..............10-216 Engine and Pump Control .
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STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE AND COOLING SYSTEM ENGINE AND COOLING SYSTEM Engine Related Parts Drive plate Damper assembly Outline Torsion spring Muffler A wet type damper assembly is used. Oil capacity: 1.3 l (0.343 US gal) Stopper pin Rear engine mount Friction plate Front engine mount...
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STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE AND COOLING SYSTEM Radiator, Oil Cooler and Aftercooler Reservoir tank Oil cooler Radiator inlet hose Radiator Guard Radiator outlet hose Radiator cap Aftercooler Shroud Specifications Radiator: ..... . .Aluminum wave type, 4th row Oil cooler: .
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Hydraulic pump (HPV125+125) Center swivel joint Travel speed solenoid valve Control valve Swing brake solenoid valve Final drive 10. Swing machinery Travel motor • HMV160ADT-2 (PC350LC-8) 11. Swing motor (HMF230ABE-5) • KMV200ADT (PC350HD-8) Engine (SAA6D114E) 12. Swing circle 10-6 PC350LC/HD-8...
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STRUCTURE, FUNCTION AND MAINTENANCE STANDARD POWER TRAIN MEMORANDUM PC350LC/HD-8 10-7...
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STRUCTURE, FUNCTION AND MAINTENANCE STANDARD POWER TRAIN Final Drive PC350LC-8 1. Level plug 6. No. 1 planetary carrier 11. Sprocket 2. Drain plug 7. No. 2 planetary carrier 12. Floating seal 3. No. 1 planetary gear (No. of teeth: 42) 8.
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