///Hydraulic centre section runs hot or loses power
Intensifier: hydraulics & oil
Hydraulic centre section runs hot or loses power
A worn hydraulic piston seal lets oil pass inside the centre section.
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 2 checked
01Worn piston seal
Most likely
Oil bypasses the piston, power drops and heat rises.
How to check: Pressure stays low at full oil flow; centre section warm.
| Photo | Art. no. | Description | Excl. VAT | |
|---|---|---|---|---|
 | 10155 | Back-Up Ring Piston SLIV, 05049994
Back-up ringKMT |
€ 2.28 | |
 | 10156 | Ring, Glide Hyd Piston, 05117940
Bushing & ringKMT |
€ 11.88 | |
 | 10158 | Seal Assembly, Hydraulic Piston, 05117965
AssemblyKMT |
€ 41.88 | |
 | 10159 | Hydraulic Piston body, 05132261
Valve bodyKMT |
€ 522.00 | |
 | 10162 | Hex plug, Hydraulic Piston, 05049887
Fitting & adapterKMT |
€ 11.88 |
02New piston seal running in
Less likely
A new seal runs warm for a short time.
How to check: Normal for the first hours after rebuild.
Related problems
General advice based on manufacturer manuals and service practice. Always follow the manual of your machine. Not sure? .