What is the purpose of the oil filter bypass valve?
The bypass valve – otherwise known as a pressure relief valve – is an integral part of the oil filter. The valve is designed to open when the oil filter becomes clogged or when the oil is too thick. This allows the oil to bypass the filter through a center tube.
How does a oil cooler bypass valve work?
The cooler circuit cold oil flow becomes restricted as the oil viscosity increases. The higher viscosity oil resists flow, causing pressure to rise across the circuit. The valve opens at the specified pressure to bypass the oil around the cooler circuit and flow to lubrication circuit, if the pressure is high.
Where is the oil pressure bypass valve?
Most oil pumps are positive displacement pumps, which deliver more oil than an engine needs. To address this, there’s a pressure relief valve located at the oil pump outlet. Its purpose is to open when engine oil pressure reaches a certain value.
Are bypass oil filters good?
Bypass filters have high capacities and eliminate much smaller particles than full-flow filters, including soot. Bypass filters reduce engine wear and increase oil volume, but their high efficiencies mean they also have higher restriction and must be used in conjunction with a full-flow filter.
How do you know if a pressure relief valve is bad?
How do I know if my pressure reducing valve is bad?
- Low or Fluctuating Water Pressure.
- No Water Pressure.
- Hammering or Vibrating Noises.
- A Leak in your Flower Bed.
- High Water Pressure.
Where does the fuel filter go in a DD15?
Final filter (6) where small dirt particles are removed from the fuel. The fuel accumulator (10) gathers fuel from all return lines and passes it through a bypass valve to either the fuel prefilter (16) or to the fuel tank. The hand-operated primer pump (4) allows for priming the system when a filter is changed or when the fuel system is run dry.
Where is the ventilation bore on a DD15 engine?
A ventilation bore (4) located above the water separator element (3) serves to divert the trapped air in the water separator (3) and routes it to fuel collector (5) where it can be returned via the fuel return line to the fuel tank. The ventilation bore (4) also guarantees full use of the water separator element (3).
How does the check ball work on a DD15 engine?
The check ball (2) has the task of preventing fuel from draining out of the fuel inlet circuit when the engine is stopped. If the fuel flow is blocked, the prefilter can be bypassed via the opened bypass valve (3) located at the top of the filter.