Komatsu condensed the whole working life of two compact hydraulic excavators into 287 pages, and this Komatsu PC45MR-3, PC55MR-3 operator manual PDF, factory document TEN00553-00, reproduces all of it, from the morning walk-around to long term storage. The maintenance schedule chart maps every interval from 100 to 2000 service-meter hours, backed by the procedures themselves: oil and coolant handling, electrical system care, hydraulic precautions, and a full wear parts list. Gauge and monitoring system explanations tell you what the panel is actually reporting, and dedicated chapters cover traveling on slopes, escaping mud, trailer loading, lifting points, and cold weather starts. Pack the swing pinion case with 4.5 liters of grease; swap rubber shoes once lug height wears to 5 mm. Sometimes it is just you, the machine, nobody to ask. Print the section you need and let it get greasy on the bench; the bookmarked file stays clean.
What's Inside This Komatsu PC45MR-3, PC55MR-3 Operator Manual
| System | Pages | Key Topics |
|---|
| Safety | 14-55 | Safety Labels (Location of Safety Labels), Safety Machine Operation (Transportation, Battery, Towing, Lifting Objects with Bucket), Safety Maintenance Information |
| Machine View and Controls | 56-64 | Overall Machine View, Monitoring System, Gauges, Service Meter |
| Switches and Control Levers | 65-72 | Starting Switch, Lamp Switch, Cab Heater, Control Levers, Blade Control |
| Machine Operation and Handling | 73-81 | Travel Levers, Boom Swing Pedal, Windshield Operation, Emergency Escape, Komtrax |
| Engine and Daily Checks | 82-97 | Engine Rear Cover, Tilting Floor, Walk-Around Checks, Coolant Level, Fuel Level |
| Operating Procedures | 98-123 | Starting Engine, Warming-Up, Stopping Engine, Traveling, Traveling on Slopes |
| Work Applications and Transportation | 124-157 | Steering, Swinging, Backhoe Work, Loading, Parking, Transportation, Lifting |
| Cold Weather and Long Term Storage | 158-171 | Cold Weather Operation, Battery, Long Term Storage, Troubleshooting |
| Maintenance | 172-241 | Maintenance Information, Outline of Service (Handling Oil, Fuel, Coolant, And Performing Oil Clinic, Electric System Maintenance, Handling Hydraulic System), Wear Parts (List) |
| Specifications | 242-245 | Engine, Operating Weight, Bucket Capacity, Working Ranges, Travel Speed, Swing Speed |
| Attachments and Options | 246-283 | Attachments and Options - General Information (Safety First, Attachment Installation, Bucket with Hook, Hook Condition, Prohibited Operations) |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Tightening torque for 6mm bolt | 11.8-14.7 Nm | p. 184 |
| Tightening torque for 8mm bolt | 27-34 Nm | p. 184 |
| Rubber shoe lug height replacement limit | 5 mm | p. 209 |
| Rubber shoe crack repair threshold | 60 mm | p. 210 |
| Total amount of grease for swing pinion | 4.5 liters (4.1 kg) [1.19 US gal, 9.04 lb] | p. 220 |
| Engine Oil Pan Capacity | 8.1 L | p. 182 |
| Hydraulic System Capacity | 55 L | p. 182 |
| Fuel Tank Capacity | 65 L | p. 182 |
| Cooling System Capacity | 8.5 L | p. 182 |
| Engine Oil Filter Replacement Interval | 500 hours | p. 180 |
| PC45MR-3 |
| Operating Weight (Canopy) | 4,795 kg | p. 243 |
| PC55MR-3 |
| Operating Weight (Canopy) | 5,160 kg | p. 243 |
