2005 Komatsu PC400-7 PC400LC-7 PC450-7 PC450LC-7 Excavator Shop Manual PDF

Description

File Details

• Manual type: Shop Manual (SEBM033007)
• Brand: Komatsu
• Models covered: PC400-7, PC400LC-7, PC450-7, PC450LC-7
• Engine: SAA6D125E-3 (SA6D125E-3)
• Serial number ranges: PC400-7 50001 and up, PC400LC-7 50001 and up, PC450-7 20001 and up, PC450LC-7 20001 and up
• Language: English
• Page count: 781 pages
• File format: PDF
• Publication date: 09-2005

Chapters Covered

This Komatsu PC400-7 PC400LC-7 PC450-7 PC450LC-7 shop manual is organised into five main sections that together provide the complete technical documentation for the machine and its major assemblies:

• 01 GENERAL — dimensions, specifications, weight table, working ranges, tightening torques, conversion tables and safety notices.
• 10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD — engine related parts, radiator / oil cooler / aftercooler, power train, final drive, sprocket, swing machinery, swing circle, track frame and recoil spring, idler, carrier roller, track shoe, hydraulic piping drawing, hydraulic tank, hydraulic pump, LS (PC) EPC valve, variable volume valve, control valve, main relief valve, CLSS, self pressure reducing valve, swing motor, center swivel joint, travel motor, travel junction valve, valve control, travel PPC shuttle valve, track equipment — swing PPC valve, travel PPC valve, service PPC valve, solenoid valve, PPC accumulator, return or filter, boom hydraulic drift prevention valve, arm hydraulic drift prevention valve, quick return valve, lift check valve, attachment circuit selector valve, holding valve, hydraulic cylinder, work equipment.
• 20 TESTING AND ADJUSTING — standard value table for engine, standard value table for chassis, testing and adjusting procedures, troubleshooting procedures, tools table, monitor panel special functions.
• 30 DISASSEMBLY AND ASSEMBLY — removal and installation of cylinder head assembly, engine rear seal, engine front seal, fuel supply pump, fuel injector, nozzle tip, starting motor, radiator, hydraulic oil cooler, engine and hydraulic pump, swing circle, swing motor and swing machinery, sprocket, travel motor and final drive, carrier roller, track roller, idler, recoil spring, track shoe, conditioner unit, operator’s cab, monitor assembly, pump controller, engine controller, revolving frame, counterweight, hydraulic tank, hydraulic pump, control valve, center swivel joint, equipment PPC valve, travel PPC valve, hydraulic cylinder and work equipment.
• 90 OTHERS — additional reference material and diagrams.

The value of this 2005 Komatsu PC400-7 PC400LC-7 PC450-7 PC450LC-7 shop manual lies in its combined coverage: a single PDF takes you from the machine’s overall dimensions and working ranges, through the structure and function of every major system (engine, hydraulics, power train, undercarriage, swing and work equipment), into the complete testing and adjusting procedures, and finally through the disassembly and assembly of each component. Komatsu designed this manual for service technicians working in a workshop, so every section is written to help diagnose a fault, confirm a specification, or remove and refit a component correctly. The hydraulic and electrical troubleshooting sections, in particular, map problems to causes so you can isolate a fault before committing to a repair.

IMAGES PREVIEW

What This Manual Enables You to Do

With this Komatsu PC400-7 PC400LC-7 PC450-7 PC450LC-7 shop manual on hand you can confidently carry out routine servicing, diagnose hydraulic and electrical faults, test pressures and flows, adjust valves and relief pressures, remove and install major assemblies, and rebuild components such as the final drive, swing machinery, hydraulic cylinders, travel motor and control valve. Every specification you need — from engine speeds and compression pressures to sprocket wear limits and hydraulic relief pressures — is printed in the manual, so you are not relying on guesswork or generic data.

Correct procedures and the right specifications matter on a machine of this size. An incorrectly adjusted relief valve, a mis-timed valve clearance, or an assembly sequence that skips a step can turn a straightforward repair into an expensive failure. This manual gives you the Komatsu method: the order of operations, the torque figures, the clearances, the safety precautions and the inspection criteria that the machine was designed around.

Delivery

This Komatsu PC400-7 PC400LC-7 PC450-7 PC450LC-7 shop manual is supplied as an instant PDF download. There is no shipping, no waiting for a physical book, and no restriction on where you use it — open it on a laptop in the workshop, a tablet next to the machine, or print the pages you need for the job at hand.