The relief pressure for 60 series combines is 3190 +or - 150psi. If the relief pressure does not meet the spec and the pump flow is 16 gal. per minute, install shims for the relief valve.
If the relief pressure does not meet the spec and the pump flow is 16 gal. per minute, install shims for the relief valve. Order and install shims R27170. The shims are .010" thick and one shim will increase pressure approximately 100 psi.
To install the shims place a vacuum pump on the hydraulic reservoir. Then remove the plastic cap on top of the valve. (see attached picture for location) 62476.jpg Use a deep well socket and remove the threaded cap that holds the shims and spring in place. Carefully remove the cap and install shims in the under side of the cap with grease so that the shims set on top of the spring. Use 1 shim per 100 psi increase.