Komatsu PC40MR-2 Parts Book PDF – Serial 8001-Up Mini Excavator Parts Catalog

Description

The Komatsu PC40MR-2 parts book in this download is the illustrated parts catalogue for the PC40MR-2 mini excavator, serial number 8001 and up, and for the 4D88E-5X-AB engine fitted to it. Rather than guessing at a part number or ordering a seal that does not fit your build, you open the figure that matches your machine’s serial range and read straight across the row: item number, part number, description, quantity and the serial-number note that tells you whether that particular part applies to your machine.

At 483 pages this is a full tear-down catalogue, not a condensed list. It walks the machine in the same order a technician strips it: engine and exhaust, cooling, fuel, electrical, hydraulics, revolving frame, operator’s compartment, guards, swing circle, travel and lower piping, undercarriage, work equipment, decals and service kits. Every one of those groups is split into component figures, and every figure is backed by its own parts list.

File Details

• Manual type: Illustrated parts book / parts catalogue
• Machine: Komatsu PC40MR-2 mini excavator
• Serial number coverage: PC40MR-2 S/N 8001 and up
• Engine coverage: 4D88E-5X-AB engine S/N 00101-UP; 4D88E-9R 030000
• Language: English
• Page count: 483 pages
• File format: PDF
• Section codes covered: 030000, 060000, 090000, 120000, 150000, 180000, 210000, 240000, 270000, 300000, 330000, 360000, 390000, 420000, 450000

Chapters Covered

• Engine Related Parts – engine mounting parts, engine related parts, exhaust, power take off
• Cooling System – radiator and cooler, radiator and cooler (for air conditioner), piping and mounting, cover, fan guard, fan guard (for air conditioner), net
• Fuel Tank and Related Parts – fuel tank, fuel line
• Electrical System – wiring (harness), wiring (cable and relay box), Komtrax (for cab), additional work lamp, travel alarm, travel alarm (for air conditioner)
• Hydraulic System – hydraulic tank (elbow and mounting parts), main valve (valve and elbow) across all attachment, service valve and power angle power tilt variants, main valve (elbow), main valve (bracket) for attachment, main valve (additional part), main pump (for air conditioner), suction line, P.P.C. main line, P.P.C. main line (solenoid valve), P.P.C. main line (additional part), actuator line (mounting), multi pattern (valve), P.P.C. bracket, Komatsu-ISO pattern control plate, power angle power tilt line (solenoid valve and piping)
• Main / Revolving Frame and Related Parts – revolving frame, boom swing bracket, boom swing cylinder and foot pin
• Operator’s Compartment and Control System – operator’s seat, seat belt, cab window sections, front window, front lower glass, door and door catch, cab electrical parts, cab related parts, Galeo plate, cab base, travel control, boom swing control, block assemblies, console L.H. and R.H., piping L.H. and R.H., fuel control, electrical, blade control, cover, sheet, foot rest, heater switch cap, heater, air conditioner, attachment control, cable, joint, floor mats, window washer, canopy, plastic canopy, car heater and piping, radio and radio box, ashtray, power source, floor frames, floor mounts, floor covers, travel pedal, hand rail, cup holder
• Guard – hood, hood mount bracket (canopy and cab), hood cover, hood seal, side cover L.H. and R.H., front cover, battery cover, rear view mirror, counterweight, counterweight cover, under cover
• Swing Circle and Related Parts – swing circle, swing machinery and related parts, swivel joint and related parts, swivel joint mount, power tilt mecha angle blade line (lower piping and lower valve)
• Travel and Lower Piping – lower hydraulic piping, travel motor and related parts, sprocket
• Under Carriage – front idler, idler cushion, track roller, carrier roller, track shoe (city pad, road liner, rubber, MT pad), track frame, track frame cover, track guard
• Work Equipment – boom, boom piping, boom work lamp, arm foot pin and cylinder mounting pin, boom cap, boom attachment line, boom cylinder, arm cylinder, arm, arm for long arm, arm cap, arm attachment line, bucket cylinder, bucket link, bucket pin, bucket pin (slack adjust), buckets in 0.055, 0.11, 0.14 and 0.16 m3 widths, blade, blade (strengthen type), blade and blade frame (for power angle power tilt), blade lift cylinder and cover, tilt cylinder and angle cylinder
• Marks and Plates – Japanese decal set, air conditioner decal set, control pattern plates for canopy and cab
• Accessory – tool and wrench, tool kit
• Service Kit and Component Parts – swing machinery, main pump sections, boom cylinder, arm cylinder, boom swing cylinder, bucket cylinder, blade cylinder, swivel joint, swing motor, travel motor, main valve (8-valve, 9-valve and 10-valve), PPC valves for travel, work equipment, blade, PAT blade and swing/attachment, selector valves, air conditioner unit

Put together, those chapters give you a complete part-level map of the PC40MR-2. The value is not just the number of pages. It is that the catalogue repeatedly breaks the same assembly into different configurations – a main valve listed separately for the attachment version, the service valve version, the power angle power tilt version and the combined attachment plus power angle power tilt version, for example. That means a machine with a blade and a tilting angle function is not forced into the parts list of a plain digging machine. The same applies to the cab and canopy variants, the long arm and standard arm, the air conditioner and non-air conditioner builds, and the different track shoe types.

How the Parts Lists Are Structured

Each figure begins with an exploded drawing of the assembly. Callout numbers on the drawing point to rows in the table directly underneath. Those rows carry the item number, the part number, the description and the quantity required for that assembly. Where a component was changed during production, the row shows the serial number range it belongs to, so you can see at a glance whether the part applies to an early machine or a later one. This is what makes the serial-number specificity of the Komatsu PC40MR-2 parts book useful in practice – you are not looking at a generic list that quietly covers three different builds.

Sub-components are listed under their parent assembly, for instance the cap, plug, hose, clip, frame, cushion, plate, bolt, washer, oil cooler, elbow and O-ring that make up the cooling group, or the individual bushings, collars, seals, rings, pins and shims that make up a bucket link or a blade frame. Fasteners are included rather than omitted, which is often exactly what you need when a bolt has been lost or a washer has been crushed.

Serial Number Ranges and Part Variations

The catalogue is written for PC40MR-2 serial 8001 and up, and within that it recognises the production splits that matter when ordering: 8001-8054, 8055 and up, 8101-8445, 8446 and up, and further break points around 8255, 8355, 8431, 8512, 8562, 8728 and 8772. The engine side is covered for 4D88E-5X-AB from engine serial 00101-UP and for the 4D88E-9R 030000 specification. Because those ranges appear beside the affected part numbers rather than buried in a separate bulletin, a single lookup tells you both the part and whether it is the right one for your build.

Where This Parts Catalog Helps Most

Hydraulic work is where a parts book earns its place. The PC40MR-2 sections covering the hydraulic tank elbows and mountings, the main valve bodies, spools, springs, plugs, seats, poppets, O-rings and back-up rings, the main pump case and valve groups, the suction line, the P.P.C. main line and the travel and swing motors are detailed enough to identify the individual seals and small internal parts that fail and are otherwise almost impossible to name. The same applies to the swivel joint, where the shaft, rotor, slipper seals, rings and cover are all itemised separately for both the standard and power angle power tilt versions.

On the undercarriage side, front idler, idler cushion, track roller, carrier roller and the track shoe options are laid out with their bushings, shafts, floating seal assemblies, O-rings and shoe bolts, so a recoil or roller rebuild can be planned part by part. The work equipment chapters cover boom, arm, bucket link, bucket pins and every bucket width offered, plus the blade lift, tilt and angle cylinders, again down to the individual piston, rod, packing, wear ring and nut.

For the operator’s compartment, the catalogue separates the canopy builds from the cab builds and the air conditioner builds from the non-air conditioned ones, which matters because the floor frames, covers, mats, consoles and piping differ between them. Decal and plate sections are included too, so a machine being restored or re-labelled can be brought back to correct specification.

Get the Complete PC40MR-2 Parts Reference

With this Komatsu PC40MR-2 Parts Book PDF on hand you can identify and order parts with the correct number the first time, plan a hydraulic or undercarriage rebuild without pulling the machine apart to see what is inside, and confirm that a part you have been offered actually belongs to your serial range. It supports the jobs that go wrong when parts are guessed: valve resealing, pump repairs, swivel joint rebuilds, travel and swing motor work, cylinder repacking, track frame and roller service, cab and canopy component replacement and decal restoration.

Correct part numbers save more than money. They save the second strip-down after a seal of the wrong size leaks, the return postage on a valve spool that does not fit, and the downtime while a machine sits waiting for a replacement that was ordered from a photograph. A serial-specific catalogue removes that guesswork entirely.

IMAGES PREVIEW

The file is delivered as an instant PDF download after payment. There is no shipping, no waiting for a disc and no courier delay. Open it on a laptop in the workshop, a tablet beside the machine or a phone at the parts counter, print the figures you need for the job and keep the rest on file. Because it is a PDF, you can search within a section, zoom into a callout number and print only the pages relevant to the assembly you are working on.