Do I need to replace both the pump cobbler and the cutting ring?

Do I need to replace both the cobalt plate and the cutting ring on the pump?

No, the pump truck cobalt plate lasts longer.

How to install the S-valve spectacle plate and cutting ring on a pump truck with and detailed assembly drawing?

First of all, the mixing shaft is dismantled, the big end and the small end should be removed, after that the S-valve is lifted out, the cutting ring is the easiest, the spectacle plate is a bit fiddly, the screws are removed at the back of the hopper and then the spectacle plate can be knocked off.

Concrete pump truck cutting ring role.

Piston guide rings, found on both the concrete piston and the main cylinder piston. They are also found in the oscillating cylinders and are called guide bands. The function of all guide rings and guide bands is the same. Because the piston (metal) cannot rub directly against the cylinder wall (metal), there must be a soft object to "set up" the piston and act as a support for the piston itself on the cylinder wall.

How to prevent damage to concrete pump cutting rings and spectacle plates?

Concrete pump cutting ring and glasses plate damage can be prevented by rubber springs Reasonable control of the rubber spring compression, to ensure that the cutting ring and glasses plate reasonable amount of seal, when the cutting ring and glasses plate wear, rubber springs can rely on their own elastic deformation to compensate for the cutting ring and glasses plate wear amount, to eliminate the wear gap.