///Oil leaks from a weep hole on the hydraulic cylinder head
Intensifier: hydraulics & oil
Oil leaks from a weep hole on the hydraulic cylinder head
Oil at the weep hole between hydraulic and HP cylinder means a hydraulic (cartridge) seal is leaking.
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 hydraulic cartridge seal
Most likely
The cartridge seal keeps oil away from the plunger.
How to check: Replace the cartridge seal; if the leak returns, check the plunger.
| Photo | Art. no. | Description | Excl. VAT | |
|---|---|---|---|---|
 | 10108 | Hydraulic Cartridge Seal Assembly, 05130091
AssemblyKMT |
€ 99.12 | |
 | 10200 | Repair Kit - Hydraulic Cartridge Seal Assembly .875, 80084759
Repair kitKMT |
€ 29.88 | |
 | 10386 | Hydraulic cartridge seal tool, 05009048
SealKMT, OMAX |
€ 82.80 | |
 | 10581 | Repair Kit - Hydraulic Cartridge Seal Assembly 1.125 , 80085061
Repair kitKMT |
€ 29.88 | |
 | 10582 | Hydraulic cartridge seal assembly SL-V 75/100, 05146584
AssemblyKMT |
€ 136.00 |
02Scratched plunger
Possible
Lengthwise scratches carry oil past the seal.
How to check: Inspect and polish or replace the plunger.
Related problems
General advice based on manufacturer manuals and service practice. Always follow the manual of your machine. Not sure? .