Key Takeaways

• The PC200 uses the HPV95 tandem main pump across the PC200-6, -7 and -8 generations; part numbers differ by generation (708-2L-00500, 708-2L-00055, 708-2L-00461 and more).
• Because there are so many PC200s, a PC200 pump is one of the highest-turnover hydraulic parts in the world — availability is good, so buy on grade and warranty, not desperation.
• Slow, weak and drifting functions that get worse as the oil heats are the core symptom of internal pump leakage.
• Always confirm with a pressure test and check the relief valve and pilot pressure first — they mimic a worn pump and cost much less.
• Cost has three parts: the pump itself (by grade), the freight, and the downtime — for a working machine, downtime is usually the largest.
• Renew the contamination that caused the failure (oil, filters, cooler) or the replacement pump will fail the same way.

Table of Contents

• 1. The PC200 main pump: HPV95 across generations
• 2. Failure signs to act on
• 3. Symptom to cause: the diagnostic map
• 4. Diagnose before you replace
• 5. What drives the replacement cost
• 6. Rebuild or replace?
• 7. Buying and service information
• 8. Frequently asked questions

1. The PC200 main pump: HPV95 across generations

The Komatsu PC200 is the machine that put the 20-tonne excavator on the map, and it uses the HPV95 variable-displacement tandem main pump from the PC200-6 through the PC200-7 and PC200-8. Because the model spans generations, the part number changes even though the pump family does not: a PC200-8 assembly such as 708-2L-00500 is a different unit from the PC200-6/7 708-2L-00055, and internal parts like the valve plate and servo piston differ too. That is why the machine serial, not the "PC200" badge, is what confirms the right pump. The full range is on the Komatsu PC200 hydraulic pump page and the PC200-8 parts page.

2. Failure signs to act on

A PC200 pump gives clear warnings before it fails outright. The signs a mine or rental operator should not ignore:

• Slow and weak when hot. The machine loses speed and digging force as the oil warms — classic internal leakage.
• Drifting. A raised boom or bucket creeps, or the machine will not hold on a slope.
• Hot hydraulic oil. Leakage turns energy into heat; oil running hot under normal load points at the pump or relief.
• Whine or knock under load. Worn rotating group or bearings.
• Low main relief pressure that falls further with temperature on a pressure test.
• Jerky or unresponsive controls. Often the regulator or pilot pressure, not the pump itself — check before buying a pump.

3. Symptom to cause: the diagnostic map

4. Diagnose before you replace

Replacing a PC200 pump is expensive enough that it is worth an hour of diagnosis first. Work in order:

• Check the basics. Oil level and condition, the suction line and strainer, and the filters. A starved pump behaves like a worn one.
• Warm the machine, then pressure test. Read main relief pressure at operating temperature and compare with the specification.
• Check relief and pilot pressure. A sticking relief or low pilot pressure mimics pump failure and costs a fraction to fix.
• Check the regulator and servo piston. On the HPV95 the servo piston and regulator are common renewal items — the servo piston for the PC200-8 HPV95 pump is a typical example — and fixing them can restore control without a new pump.
• Add a flow test if pressure is good but the machine is slow: that confirms a worn pump rather than a pressure problem.

If the pump is confirmed worn, the internal parts tell the story: a scored cylinder block and valve plate for the PC200-6 HPV95 pump is a common finding on high-hour machines.

5. What drives the replacement cost

There is no single "PC200 pump price" — three factors set the number, and a good supplier quotes all three honestly.

The pump and its grade. A genuine new assembly costs the most; a professionally rebuilt pump costs less and performs like new where the core is sound; a quality aftermarket assembly (like our PC200-8 708-2L-00500 main pump) sits between the two. The generation matters too — the number must match the machine.

The freight. A pump assembly is heavy, so packing and shipping add cost; that is why we crate heavy items and can quote both air and sea.

The downtime. For a working machine this is usually the biggest number. A complete assembly swapped in over a shift is often cheaper overall than a slow rebuild, even if the rebuild costs less on paper.

Ask for the grade, the number and the realistic lead time together — and compare the total, not just the purchase price. Current pricing is quoted on request against your machine serial.

6. Rebuild or replace?

If the housings and swash plate are sound and you can accept the turnaround, a rebuild with new pistons, shoe plate, valve plate and seals is good value. If the housing or shaft is damaged, or the machine's uptime matters more than the price gap, fit a complete assembly. Either way, clean the system — contaminated oil is the usual root cause, and it will destroy the replacement just as quickly. The full range sits under excavator hydraulic pumps, with the older generation on the PC200-7 parts page.

7. Buying and service information

• How to order: send the machine model and serial, the pump part number and a photo of the old unit; we confirm before dispatch.
• Testing: pumps are checked and measured before shipment; complete assemblies are bench-tested where applicable.
• Packing and shipping: heavy items ship in wooden export cases; air and sea freight quotable to your port.
• Warranty: 3–12 month warranty options depending on the part and grade.
• Contact: email service@gzotto.com, message us on WhatsApp at +86 153 0226 9990, or use our contact page.

8. Frequently asked questions

What pump does a Komatsu PC200 use?

The HPV95 variable-displacement tandem main pump, used across the PC200-6, PC200-7 and PC200-8. Part numbers differ by generation, so confirm against the machine serial.

How much does a PC200 main pump cost?

It depends on the grade (genuine, rebuilt or aftermarket), the exact pump number and the freight. Send your machine serial and part number and we quote the options — including the lead time, which often matters more than price.

How do I know my PC200 pump is failing?

Slow, weak and drifting functions that worsen as the oil heats, plus a main relief pressure below specification on a pressure test. Check the relief valve and pilot pressure first.

Can I repair a PC200 pump instead of replacing it?

Often yes, if the housings and swash plate are sound — new pistons, shoe plate, valve plate and seals. If the housing or shaft is damaged, replacement is the better value.

Do you supply complete PC200 pumps?

Yes — complete HPV95 pumps for the PC200-6, -7 and -8, as well as rebuild parts, with pre-shipment checking and worldwide shipping.

Why buy from OTTO