Komatsu PC1250-8R PC1250SP-8R Hydraulic Excavator Operation & Maintenance Manual

Description

Komatsu PC1250-8R PC1250SP-8R Hydraulic Excavator Operation & Maintenance Manual

This is the complete Operation & Maintenance Manual for the Komatsu PC1250-8R and PC1250SP-8R hydraulic excavators, covering machines from serial number 35214 and up. Published by Komatsu under form number PEN00533-01 (May 2012), this document is the full operational, safety, inspection, and maintenance reference for these mining-class excavators.

File Details

• Manual Type: Operation & Maintenance Manual
• Brand: Komatsu
• Models Covered: PC1250-8R, PC1250SP-8R
• Serial Numbers: 35214 and up
• Language: English
• File Format: PDF
• Form Number: PEN00533-01
• Publication Date: May 2012
• Page Count: 387 pages

Chapters Covered

• Before Reading This Manual
• Safety Information — DANGER, WARNING, CAUTION, NOTICE, REMARKS definitions
• Introduction — Use of Machine, Directions of Machine, Visibility from Operator’s Seat, Proximity and 12 m Circumference Visibility
• Service Meter Location and Your Machine Serial Numbers
• Safety Labels — full label locations, part numbers, and handling instructions
• General Precautions Common to Operation and Maintenance — fire prevention, getting on/off machine, protective structures, unauthorized modification, attachments and options, cab glass, running engine indoors
• Precautions for Operation — jobsite investigation, loose ground, high-voltage cables, good visibility, signs and signalman, asbestos dust, starting engine, booster cables, checks before operation, traveling forward/reverse, travel on slopes, operating on slopes, prohibited operations, snow-covered/frozen surfaces, parking, transportation, towing, lifting with bucket
• Precautions for Maintenance — warning tags, workplace organization, authorized personnel, stop engine before service, two workers for running engine service, installing/removing attachments, high-place work, working under machine, proper tools, welding, battery handling, hammer use, high-temperature coolant/oil, high-pressure oil/fuel, high voltage, noise, grease under pressure, recoil spring, accumulator and gas spring, compressed air, air conditioner refrigerant, waste disposal, window washer fluid, periodic replacement of safety critical parts
• Operation — machine view illustrations with numbered components, detailed controls and gauges
• Monitoring System — emergency monitors (engine coolant temperature, hydraulic oil temperature, engine oil pressure), caution monitors (charge level, fuel level, air cleaner clogging, engine coolant temperature, hydraulic oil temperature), basic check monitors (radiator coolant level, engine oil level, maintenance interval), meter display portion (pre-heating, swing lock, wiper, auto-deceleration, working mode, travel speed), gauges (engine coolant temperature, fuel, hydraulic oil temperature), service meter, monitor switches
• Switches — starting switch, fuel control dial, cigarette lighter, swing lock switch, lamp switch, machine push-up switch, boom shockless control switch, horn switch, room lamp switch, emergency pump drive switch, swing brake cancel switch, step light switch, lower wiper switch, revolving warning lamp switch, large capacity airflow air conditioner blower switch
• Control Levers and Pedals — lock lever, travel levers with pedal, left and right work equipment control levers
• Door Lock, Cap with Lock, Hot and Cool Box, Magazine Box, Ashtray, Fire Extinguisher
• Air Conditioner Controls — auto and manual operation, vent selector, defroster, RECIRC/FRESH, self-diagnostic function, Fahrenheit/Celsius switching
• Radio and Auxiliary Electric Power (24V and 12V)
• Fuse and Circuit Breaker
• Controller — engine controller and pump controller locations and handling
• Tool Box and Grease Pump — method of use, filling grease, precautions
• Machine Operations and Controls — before starting engine, walk-around checks
• Starting Engine — normal start and booster cable start
• After Starting Engine — engine warm-up, hydraulic equipment warm-up
• Machine Operation — travel forward/reverse, stopping, steering, counter-rotation (spin turn)
• Swinging and Work Equipment Controls
• Working Mode — P mode, E mode, heavy-duty lift, swing priority, economy mode settings
• Prohibited Operations — swing force, travel force, end-of-stroke cylinder operation, bucket dropping, bucket as lever, machine dropping, digging at angle, hard rocky ground, unstable machine, rock on track
• General Operation Information — traveling, high-speed travel, continuous travel limits, permissible water depth
• Traveling on Slopes — uphill, downhill, engine stopped on slope, cab doors on slope
• Escape from Mud — track on one side stuck, tracks on both sides stuck
• Recommended Applications — backhoe work, ditching work, loading work
• Bucket Replacement
• Parking Machine and Locking
• Transportation — lifting machine, loading/unloading, transportation posture (seven units)
• Cold Weather Operation — fuel and lubricants, cooling system coolant, battery, monitor, after daily work, after cold weather season
• Long Term Storage — before, during, after storage, starting after long-term storage
• Troubles and Actions — running out of fuel, phenomena that are not failures, towing, severe job conditions, discharged battery, booster cable starting, electrical system troubleshooting, chassis troubleshooting, engine troubleshooting, electronic control error codes
• Maintenance Information — service meter reading, Komatsu genuine parts and lubricants, welding instructions, dusty jobsite, mixing lubricants, hydraulic air bleeding, hose installation, checks after service
• Outline of Service — handling oil, fuel, coolant and water, grease, KOWA oil analysis, storing oil and fuel, filters, electric system maintenance
• Wear Parts List
• Recommended Fuel, Coolant, and Lubricant — capacities and viscosity charts
• Tightening Torque Specifications — metric bolts and hydraulic hose torque tables
• Safety Critical Parts List — periodic replacement intervals
• Maintenance Schedule Chart — initial 100 and 500 hours, when required, every 10, 100, 250, 500, 1000, 2000, 4000, 5000, and 8000 hours
• Maintenance Procedures — air cleaner element, cooling system cleaning, track shoe bolts, track tension, bucket teeth, bucket clearance, window washer fluid, air conditioner, line filter, gas spring, hydraulic system air bleeding, additional water separator, fuel circuit bleeding
• Check Before Starting — coolant, engine oil, fuel, hydraulic oil, swing machinery, PTO case, air cleaner, wiring, horn
• Specifications — PC1250-8R and PC1250SP-8R operating weight, bucket capacity, engine, dimensions, travel speed, working ranges
• Attachments and Options — combinations, track shoe selection, auto-greasing system, KOMTRAX Plus
• Tropical Specification Machine — wear parts and air cleaner element
• Loading Shovel — switches, fuse, operations, transportation, wear parts, maintenance, specifications, work equipment combinations
• Index

This Komatsu PC1250-8R and PC1250SP-8R Operation & Maintenance Manual is the foundational reference for anyone responsible for running or servicing these mining excavators. It goes beyond a simple checklist: it explains the monitoring system that keeps the operator informed of machine condition, the safety systems and labels that protect against common failures, and the maintenance intervals that must be respected to keep a 115-ton excavator working productively. The troubleshooting matrix covers electrical, chassis, and engine faults, and the electronic control system error code table (E02 through E0E) gives the operator a direct path to the correct remedy.

The maintenance schedule is laid out across multiple intervals, from the initial 100-hour and 500-hour break-in services through every 10, 100, 250, 500, 1000, 2000, 4000, 5000, and 8000-hour procedures. Each interval has a dedicated procedure section with illustrations, torque values, and step-by-step instructions. The sections covering the auto-greasing system, swing motor filter replacements, hydraulic tank strainer cleaning, and track tension adjustment are especially detailed because these systems are critical to uptime on a machine of this class. Cooling system cleaning, fuel circuit air bleeding, and the accumulator charge pressure check are also covered in full.

What This Manual Enables You to Do

With this PC1250-8R and PC1250SP-8R service manual on hand, a technician or operator can carry out the complete day-to-day and periodic service routine for the machine: checking and topping up engine oil, coolant, fuel, and hydraulic oil; draining water and sediment from the fuel system; adjusting track tension; replacing bucket teeth; servicing the air cleaner; checking the air conditioner; and bleeding air from the hydraulic and fuel circuits after repairs. The manual also supports diagnostic work — the monitoring system section explains what each warning and caution monitor means and what action to take, and the troubleshooting chapter maps common symptoms to likely causes and remedies.

Because the correct torque values and service limits are printed directly in the manual, there is no guesswork when tightening track shoe bolts, track frame and axle connecting bolts, or hydraulic hose fittings. The safety critical parts list identifies which hoses, seat belts, and clamps require periodic replacement regardless of appearance, which is essential for long-term machine safety and fire prevention.

Delivery

IMAGES PREVIEW

This Komatsu PC1250-8R and PC1250SP-8R Operation & Maintenance Manual is delivered as an instant PDF download after payment. There is no shipping, no waiting, and no physical book to lose. The file can be viewed on any device — laptop, tablet, or smartphone — and pages can be printed for use in the workshop or cab. Keep a copy on the machine and a copy on your service computer so the manual is always available when a maintenance interval comes due or a fault code appears on the monitor.