This Service Manual describes the 158-3395 Engine Oil Cooler, troubleshooting, and the disassembly and assembly. Instructions for cleaning this engine oil cooler are also provided.
Do not perform any procedure in this Service Manual until you read this information and you understand this information.
Description of Engine Oil Cooler
When the engine oil cooler is assembled, the frame plate, the pressure plate, the channel plates, and the seals form a system of passages. The passages contain the flow of coolant and lube oil within the engine oil cooler.
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| Illustration 2 | g00851309 |
When the plates are compressed, the holes in the channel plates form four manifolds within the engine oil cooler for fluid flow. Fluid flows from the inlet manifold into the area between the plates. Heat is transferred across the plate from the engine oil to the coolant. The fluid flows from the area of the heat transfer to the outlet manifold and out of the engine oil cooler.
The flow direction of the engine oil and coolant alternates from one channel plate to the next channel plate. The lube oil that is being cooled flows in the top of the engine oil cooler and out of the bottom. The coolant flows into the bottom of the engine oil cooler and out of the top.
The connections for the fluids are located on the frame plate. The connections are marked "S1" through "S4". Refer to Illustration 3.
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| Illustration 3 | g00825275 |
(S1) Oil inlet (high temperature oil from engine) (S2) Oil outlet (low temperature oil to engine) (S3) Coolant inlet (low temperature supply to engine oil cooler) (S4) Coolant outlet (high temperature water from engine oil cooler) | |