TYPICAL HYDRAULIC CIRCUITS
Carrier with Auxiliary Circuit
Often a carrier is equipped with an auxiliary control valve (see Figure 1), this valve can be adjusted to provide the correct amount of oil flow to the compactor. A pressure relief cartridge can also be installed to protect the hydraulic components.
Make sure that oil is not routed back through the return port of this auxiliary valve. Instead, send the oil directly back to the tank, via the cooler and filter.
If the circuit is plumbed using both ports on the auxiliary valve, the return line should have a bleed line connected to tank, to prevent damaging pressure spikes from the returning oil.
Figure 1, Carrier with Auxiliary Circuit
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