///No or low hydraulic oil pressure
Intensifier: hydraulics & oil
No or low hydraulic oil pressure
Without oil pressure the intensifier cannot make water pressure.
Safety first: Switch off the pump, release all pressure (open the on/off valve or bleed-down valve) and lock out before you open any high-pressure part. Never put a hand or tool near a running jet.
1Check the causes, most likely first
0 of 4 checked
01Compensator blocked by debris
Most likely
The pump swashplate cannot be controlled.
How to check: Clean and inspect the high and low compensators.
| Photo | Art. no. | Description | Excl. VAT | |
|---|---|---|---|---|
 | 10521 | Hydraulic pump AV10, 05045505
PumpKMT |
€ 5,278.80 | |
 | 11039 | Low pressure Accumulator 2L
KMT, Projet |
€ 333.60 | |
 | 11041 | Accumulator Assy 0,96L 05040696
AssemblyKMT |
€ 5,988.00 | |
 | 11071 | Sealing ring, Accumulator, 0,96L, 05040738
SealKMT |
€ 57.48 | |
 | 11072 | Nut, Accumulator, 0,96L, 05801292
NutKMT |
€ 138.00 |
02Relief valve open or faulty
Possible
Oil returns to tank through the relief valve.
How to check: A hot relief valve shows it is passing oil.
03Pierce / low pressure mode active
Less likely
Low pressure mode lowers oil pressure on purpose.
How to check: Switch to cut pressure on the display.
04Worn hydraulic pump
Less likely
Internal leakage in the pump.
How to check: Measure flow and pressure; service the pump.
Related problems
General advice based on manufacturer manuals and service practice. Always follow the manual of your machine. Not sure? .