The maintenance section is the heart of this 385-page Komatsu PC88MR-8 operator manual PDF (OEM ID PEN00288-00), carrying the hydraulic excavator's service schedule from the check before starting to the 5000-hour interval, plus a tightening torque list, wear parts list and lubricant chart. Around that, the book walks you through the machine monitor and working mode selector, travel on slopes, escape from mud, trailer loading, lifting the machine, cold weather operation and long-term storage. Attachments get their own chapter: breaker and crusher operation, quick coupler piping, extra counterweight installation and track shoe selection. Refill the swing machinery case with 2.8 liters (0.74 US gal), and hold shop air to 0.69 MPa (99.4 PSI) or less when you clean the outer air cleaner element. A made-up drain plug torque strips threads or leaves oil weeping. The file is bookmarked and text-searchable, and it prints clean, so the maintenance pages can live on your bench and take the grease.
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|
| Safety | 16-61 | Safety Labels, General Precautions Common to Operation and Maintenance, Precautions for Operation, Precautions for Maintenance |
| Machine View Illustrations and Controls | 62-87 | Overall Machine View, Machine Monitor, Monitoring System, Working Mode Selector, Auto-Deceleration Switch |
| Detailed Controls and Gauges | 88-124 | Travel Speed Selector, Wiper Switch, Air Conditioner Controls, Function Switches, Clock Adjustment, Economy Mode Adjustment |
| Machine Operations and Controls | 125-168 | Starting Switch, Fuel Control Dial, Control Levers and Pedals, Sun Roof, Windshield, Sliding Door, Emergency Escape Hammer |
| Machine Operation Procedures | 169-212 | Walk-Around Checks, Starting Engine, Moving the Machine, Steering, Swinging, Working Mode Selection |
| Prohibited Operations and General Information | 213-244 | Prohibited Operations, Traveling on Slopes, Escape From Mud, Recommended Applications, Bucket Replacement, Attachment Operations |
| Transportation and Lifting | 245-271 | Transportation Procedure, Loading and Unloading with Trailer, Lifting Machine, Komtrax System |
| Maintenance | 272-272 | |
| Maintenance Information | 273-287 | Outline of Service (Handling Oil, Fuel, Coolant, And Performing Oil Clinic, Electric System Maintenance), Wear Parts (List), Recommended Fuel |
| Maintenance Procedure | 288-355 | |
| Specifications | 356-359 | Operating Weight, Engine Horsepower, Travel Speed, Digging Reach, Digging Depth, Dumping Height |
| Attachments and Options | 360-381 | Attachments and Options - General Information (Safety First, Attachment Installation, Bucket with Hook) |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Maximum compressed air pressure for cleaning outer element | 0.69 MPa (7 kg/cm2, 99.4 PSI) | p. 289 |
| Shim thickness | 0.5 mm (0.020 in) | p. 309 |
| Breaker circuit additional oil filter case tightening torque | 58.8 to 78.5 Nm (6 to 8 kgm, 43.4 to 57.9 lbft) | p. 313 |
| Swing machinery case oil refill capacity | 2.8 liters (0.74 US gal) | p. 341 |
| Drain plug (P) tightening torque | 44 to 93 Nm (4.5 to 9.5 kgm, 32.5 to 68.7 lbft) | p. 341 |
| Engine Oil Pan Refill Capacity | 11.0 Liters | p. 281 |
| Hydraulic System Refill Capacity | 56 Liters | p. 281 |
| Fuel Tank Capacity | 125 Liters | p. 281 |
| Cooling System Capacity | 10 Liters | p. 281 |
| Track Shoe Bolt Tightening Torque (Steel Shoe) | 118 ± 19.6 Nm (First), 90° ± 10° (Second) | p. 295 |
| Track Shoe Bolt Tightening Torque (Road Liner) | 196 ± 19.6 Nm | p. 295 |
| Standard Track Deflection | 10 to 30 mm | p. 296 |
