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6D107E-2 ENGINE 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 improvements at any time without incurring any obligation to install such changes on products sold previously.
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DIAGRAMS AND DRAWINGS ..........90-1 00-2 WA380-7 Find manuals at https://best-manuals.com...
Before starting used to or work with which you are too work, hang UNDER REPAIR signs on the controls in familiar the operator's compartment. Only qualified workers must perform the work and operation which require license or qualification. 00-4 WA380-7...
12. When assembling or installing parts, always use the specified tightening torques. When installing protective parts such as guards, or parts which vibrate violently or rotate at high speed, be particularly careful to check that they are installed correctly. WA380-7 00-5...
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When tightening nuts of the air conditioner hoses and tubes, be sure to use two wrenches; one to fix the nut and the other to tighten the nut to the specified torque (Use a torque wrench for tightening). 00-6 WA380-7...
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18. When jump starting the machine, only use a machine of similar size and voltage. Never use an arc welder or other electrical generating equipment to jump start the machine. Carefully review the safety and procedures for jump starting the machine. WA380-7 00-7...
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NOTICE Some attachments and optional parts in this shop manual may not be delivered to certain areas. If one of them is required, consult KOMATSU distributors. Materials and specifications are subject to change without notice. Shop manuals are divided into the "Chassis volume" and "Engine volume". For the engine unit, see the engine volume of the engine model mounted on the machine.
International System of units (SI). ● For reference, conventionally used Gravitational System 10-5 of units is indicated in parentheses {}. Revised Edition Mark When a manual is revised, an edition mark (…) is recorded on the bottom outside corner of the pages. WA380-7 00-9...
When installing wire ropes to an angular load, apply pads to protect the wire ropes. If the load is slippery, apply proper material to prevent the wire rope from slipping. Use the specified eyebolts and fix wire ropes, chains, etc. to them with shackles, etc. 00-10 WA380-7...
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Precautions for Using Mobile Crane 12. Remember the position of the main switch so that you Read the Operation & Maintenance Manual provided with can turn off the power immediately in an emergency. the crane in advance and operate the crane safely. WA380-7 00-11...
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14. If there is an obstacle around the hoist, stop the operation. 15. After finishing the work, stop the hoist at the specified position and raise the hook to at least 2 m (6.6 ft) above the floor. Do not leave the sling installed to the hook. 00-12 WA380-7...
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Allowable load tons 11.2 13.7 12.5 15.7 21.6 27.5 35.3 43.1 22.4 54.9 98.1 10.0 176.5 18.0 274.6 28.0 392.2 40.0 The allowable load value is 1/6 of the breaking strength of the rope used. Safety coefficient: 6 WA380-7 00-13...
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The pins of the male and female connectors are in contact at the crimped terminal or soldered portion, but if there is excessive force brought to bear on the wiring, the plating at the joint will peel and cause improper connection or breakage. 00-14 WA380-7...
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If any water or mud or dirt is stuck to the outside surface of a connector, it can enter inside the connector when the connector is disconnected. Before disconnecting a connector, wipe off any stuck water or dirt using a piece of dry cloth or blow it with compressed air. WA380-7 00-15...
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★ If the machine is left disassembled for a long time, it is particularly easy for improper contact to occur, so always cover the connector. 00-16 WA380-7...
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Since the DT 8-pin and 12-pin heavy duty wire connectors have 2 latches respectively, push them in until they click 2 times. Male connector Female connector ★ Normal locking state (Horizontal):a, b, d ★ Incomplete locking state (Diagonal):c WA380-7 00-17...
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★ Mainly, following engines are object for following connectors. • 95E-5 • 107E-1, 107E-2 • 114E-3, 114E-5 • 125E-5, 125E-6 • 140E-5, 140E-6 • 170E-5 • 12V140E-3 Slide, lock type (Type 1) (FRAMATOME-3, FRAMATOME-2) • 95/107/114/125/140/170/12V140 Series • Various pressure sensors and Ne speed sensor. Examples: 00-18 WA380-7...
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Insert the connector straight until it “clicks.” Slide, lock type (Type 2) (FRAMATOME-24) • 107/114/125 Series • Intermediate connector between machine wiring harness and engine wiring harness. Examples: Intermediate connector (engine wiring harness): OEM CONNECTION (107/114/125 series) A. Disconnection Slide down lock (red) (L1). WA380-7 00-19...
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Oil temperature sensor: TOIL iv. Coolant temperature sensor: TWTR and other. A. Disconnection Disconnect the connector by pulling lock (B) (on the wiring harness side) of connector (2) outward. B. Connection Insert the connector straight in until it “clicks.” 00-20 WA380-7...
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[1] since you cannot insert your fingers. While pressing up lock (C) of the connector with the flat- head screwdriver [1], pull out connector (3) in the direction of the arrow. B. Connection Insert the connector straight until it “clicks.” WA380-7 00-21...
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While pressing lock (E) of the connector, pull out connector (5) in the direction of the arrow. • Example: Fuel pressure sensor in common rail PFUEL etc. (AMP-3) • Example: Injection pressure control valve of supply pump: PCV (SUMITOMO-2) 00-22 WA380-7...
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Pull out housing (H1) in the direction of the arrow. ★ Housing (H1) is left on the wiring harness. B. Connection Insert the connector to the end, while aligning its groove to the other. ii. Turn housing (H1) in the direction of the arrow until it “clicks.” WA380-7 00-23...
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• If there is any value change on the tester, there may be a defective contact in that circuit. 00-24 WA380-7...
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FOREWORD HANDLING ELECTRIC EQUIPMENT AND HYDRAULIC COMPONENTS MEMORANDUM WA380-7 00-25...
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If any old oil is left, contaminants and sludge in it will mix with the new oil and will shorten the life of the hydraulic oil. 00-26 WA380-7...
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The oil cleaning equipment is used to remove the ultra fine {about 3 (10 ft)} particles that the filter built in the hydraulic equipment cannot remove, so it is an extremely effective device. WA380-7 00-27...
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After inserting the hose in the mating adapter, pull it back to check its connecting condition. When the hose is pulled back, the rubber cap portion moves toward the hose about 3.5 mm. This does not indicate an abnormality. 00-28 WA380-7...
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Hold conditions of Steps 1 and 2, pull out the whole body (2) to disconnect it. Connection Hold the connector of the tightening portion and push body (2) in straight until sliding prevention ring (1) contacts surface a of the hexagonal portion at the male end to connect it. WA380-7 00-29...
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Connection Hold the connector of the tightening portion and push the body (2) in straight until the slide prevention ring (1) contacts surface a of the hexagonal portion at the male end to connect it. 00-30 WA380-7...
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After repairing or replacing some parts, measure the size of their hole and shaft and check that the interference is in the standard range. Repair Limit And Allowable Value • The size of a part changes because of wear and deformation while it is used. The limit of changed size is called the “repair limit”. WA380-7 00-31...
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Wash the system carefully with clean fuel if dusts enter the system. Precautions for replacing fuel filter cartridge ● Be sure to use the Komatsu genuine fuel filter cartridge. ● Since the common rail fuel injection system (CRI) consists of more precise parts than the conventional fuel injection pump and nozzles, it employs a high-efficiency special filter to prevent foreign matter from entering it.
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HANDLING OF INTAKE SYSTEM PARTS ● The Komatsu Variable Geometry Turbocharger (KVGT) consists of more precise parts (variable mechanism) than the conventional turbocharger. If foreign matter enters this system, it can cause a problem. Use special care to prevent entry of foreign matter when servicing the air intake system.
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— White & Red & Yellow & Green & Blue & Color — — Green Green Blue Black Black Code — — — — Yellow & Green & Color — — — Red & Blue — White Blue WA380-7 00-39...
(nominal No. 125 and below) Insulator Soft polyvinyl chloride (type 2) Annealed copper for electric Heat-resistant Conductor General wiring in extremely cold appliance low-voltage –50 to +110 district, wiring at high-temperature wire for (-58 to +230) Heat-resistant crosslinked place Insulator automobile polyethylene 00-40 WA380-7...
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