2 vacs and the inline heater are fine.
The motor than runs the pump is fine.
Its the pump head (pumptec 205) that needs repair. This a solid metal body that has a plunger bar, o-rings, a bearing and some seals that needs repair. The seals and the bearings are sold as service kits so can be replaced as and when they go. Not opened it up to see which service kit it requires (probably worth changing both sides)
Same pump used in the Hydramaster raptor, Speedster, Ninja and a few others and therre is a Kleenrite agent in Kent so I am sure they are easy to get hold off.
Great machine for someone or repair and sell on ebay for £'s. I just done have the time.