A warning light nobody can identify stops a dig as fast as a blown hose; this 257-page Komatsu PC60-7 operator manual PDF, factory publication SEAM004202, exists to settle those questions on your hydraulic excavator. Machine monitor readouts, control lever patterns, and every gauge get plain explanations, and the maintenance schedule chart lays out service from the initial 250 hours through the 4000-hour jobs, with a separate interval table for hydraulic breaker duty. Cold weather starting, transport and lifting, long-term storage, and troubleshooting for a discharged battery or a machine bogged in mud fill out the operation chapters. Set fan belt deflection to 7 to 10 mm under about 6 kg of finger pressure, and keep final drive oil within 10 mm of the plug hole. The whole job stalls over one missing number. Bookmarked and text-searchable, with a wear parts list that gets you the right part number the first time.
What's Inside This Komatsu PC60-7 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Information | 6 | General Precautions, Operation Precautions, Maintenance Precautions, Safety Labels |
| Location of Plates, Table to Enter Serial No. and Distributor | 8-12 | Machine Serial Number Plate, Engine Serial Number Plate, Distributor Information Table |
| Safety | 13-42 | Precautions During Operation (Before Starting Engine, Operating Machine, Transportation, Battery, Towing, Bucket with Hook, Before Carrying Out Maintenance, During Maintenance) |
| Operation | 43-130 | Check Before Starting Engine, Starting Engine, Operations and Checks After Starting Engine, Moving Machine Off, Steering Machine, Stopping Machine, Swinging |
| Maintenance | 131-204 | Guides to Maintenance, Outlines of Service (Oil, Fuel, Coolant, Electric System, Hydraulic System), Wear Parts List, Use of Fuel |
| Specifications | 205-208 | Operating Weight, Performance, Track Shoe, Engine |
| Options, Attachments | 209-257 | Handling Bucket with Hook (Checking for Damage to Bucket with Hook, Prohibited Operations, Precautions During Operations), Using Seat Belt |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Inner element mounting nuts tightening torque | 4.9 - 5.9 Nm (0.5 - 0.6 kgm, 3.6 - 4.3 lbft) | p. 154 |
| Inner element tightening torque | 4.9 - 5.9 Nm (0.5 - 0.6 kgm, 3.6 - 4.3 lbft) | p. 155 |
| Oil level range from bottom of plug hole | 10 mm | p. 182 |
| Fan belt deflection | 7 - 10 mm | p. 185 |
| Air conditioner compressor belt deflection | 10 - 12 mm | p. 186 |
| Cracking pressure of safety valve (when using breaker) | 17200 kPa (175 kg/cm², 2490 PSI) | p. 226 |
| Cracking pressure of safety valve (when using other attachment) | 24500 kPa (250 kg/cm², 3550 PSI) | p. 226 |
| Operating weight (PC60-7) | 6200 kg | p. 206 |
| Travel speed (High) | 4.5 km/h | p. 206 |
| Engine model | Komatsu 4D95L | p. 206 |
| Swing pinion grease total amount | 5 L | p. 191 |
| Hydraulic tank oil refill capacity | 67 L | p. 199 |
Komatsu PC60-7 Common Problems This Manual Covers
Komatsu PC60-7 hydraulic oil overheating with whirring pump noise, all functions slow during digging
Check the hydraulic tank sight glass with the machine on level ground and add oil if low; refill capacity is 67 L (17.7 US gal), listed on page 199. Inspect the hydraulic filter per the maintenance schedule and replace a clogged element. Let the oil cool before opening the tank cap.
Manual Section: Maintenance p. 199Water temperature gauge climbing into the red zone during heavy digging, radiator steaming
Stop in a safe spot and idle the engine until the gauge drops before shutdown. Check coolant level in the reserve tank, then press the fan belt midway between the crankshaft and fan pulleys; deflection should be 7 to 10 mm as shown on page 185. Clean debris from the radiator fins.
Manual Section: Maintenance p. 185Black exhaust smoke and sluggish engine response when working the boom and arm
Check the air cleaner dust indicator, then remove and clean the outer element with compressed air from the inside out. Retighten the inner element mounting nuts to 4.9 to 5.9 Nm (3.6 to 4.3 lbft) as listed on page 154. Never clean and reinstall the inner element; fit a new one.
Manual Section: Maintenance p. 154Whining or growling noise from the final drives when traveling on hard ground
Park on level ground with the drain plug at the bottom, let the oil cool, then remove the level plug with a hexagonal wrench. The oil should sit between the bottom of the plug hole and a point 10 mm below it, the check shown on page 182. Add oil if low.
Manual Section: Maintenance p. 182Grinding or squeaking noise from the swing circle during slow swing operations
Check the grease level in the swing pinion case and inspect the grease for milky discoloration that signals water entry. Total grease charge is 5 L (4.5 kg), noted on page 191. Add grease if the level is low, and grease the swing circle fittings at the interval in the maintenance schedule.
Manual Section: Maintenance p. 191Frequently Asked Questions
What does the Komatsu PC60-7 abnormal pressure indication mean for the automatic greasing system?
An abnormally high pressure indication in the automatic greasing system, shown by the 'E' and 'A' lamps flashing in turn, indicates that the grease cartridge is empty, there is a leak in the main grease piping, a leak at the divider valve, or a defective pump. You should attempt to bleed air from the grease pump or replace the grease cartridge. p. 246
What are the replacement specifications for the hydraulic filter element on a Komatsu PC60-7?
The hydraulic filter element should be replaced every 250 hours of service. For new machines, the first replacement should occur after 100 to 150 hours of operation. p. 184
What is the standard tightening torque for a 16 mm bolt on the PC60-7?
The standard tightening torque for a 16 mm bolt is 279 ± 29 Nm (28.5 ± 3 kgm, 206 ± 21 Ibft). p. 145
What is the correct procedure for checking the fan belt tension?
The fan belt should deflect by about 7 to 10 mm (0.3 to 0.4 in) when pressed with a force of approximately 6 kg (13 lb) at a point midway between the crankshaft pulley and the fan pulley. p. 185
What is the required oil capacity for the engine oil pan when refilling a Komatsu PC60-7?
The refill capacity for the engine oil pan is 10.5 liters (2.77 US gal, 2.31 UK gal). p. 140
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