Small service kit for pumpy Hill MK5 contains seals including main high pressure. A classic symptom of high-pressure seal damage is piston stroke resistance. To extend the life of the seal, we recommend using only high-quality silicone petroleum jelly for lubrication and pumping slowly with 15-minute breaks after every 40 pumps. Manufacturer number: Z5128-201.
Attention, the set is not intended for MK1, MK2, MK3 and MK4 pumps, but only for the MK5 model.