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95 vermeer v-5750 rock wheel stalling


Nov 30, 2011
I have a vermeer rock wheel (rock saw) that runs great driving, while using hydraulics until I try to put the rock wheel in the ground.
The unit was running fine until the fuel filter clogged up and engine started to bog, replaced filter, cleaned air filter and thought all was good until trying to dig, the wheel starts great, plenty of power and rpm but as soon as it gets resistance it starts to bog the engine to the point of stalling.
This issue started during a dig, the crew used for a couple hrs then went to lunch and machine would not dig afterwords.
Would this be caused by faulty relief valve?