NUT-FAST 9U5346 - Caterpillar

P-329: Engine Has Low Oil Pressure
This is NOT an electronic system problem. Refer to Systems Operation, Testing & Adjusting Manual for additional information on the following tests
Do not operate engine with low oil pressure, engine damage will result. If measured oil pressure is low, discontinue engine operation until the problem is corrected.
Probable Root Causes:* Oil level may be too low* Dirty oil filters or restriction in oil cooler(s)* Fuel dilution into lubrication oil* Faulty oil pressure gauge* Oil pressure relief valve does not close* Oil pump suction pipe problem. Faulty oil pump or scavenge oil pump* Too much clearance between rocker arm shaft and rocker arms. Too much clearance between camshaft and camshaft bearings* Too much clearance between crankshaft and crankshaft bearings Perform the following tests in order.1. Add oil if required.2. Check the operation of bypass valve for the filter. Install new oil filters if required. Clean or install new oil cooler core(s). Remove dirty oil from engine. Put clean oil in engine.3. Check for presence of fuel in lubricating oil. Refer to P-327: Fuel Dilution Of Lubrication Oil.4. Make sure gauge is accurate. Test on another engine, if possible.5. Clean bypass valve and housing. Install new parts as necessary6. Check Oil Pump Inlet Screen for obstructions. Check for air leakage into the supply to the oil pump. Examine oil pump for excessive wear. Repair or replace as needed.7. Install new camshaft and camshaft bearings if necessary.8. Inspect the main bearings and replace as necessary.P-330: Engine Uses Too Much Lubrication Oil
This is NOT an electronic system problem. Refer to Systems Operation, Testing & Adjusting Manual for additional information on the following tests. Probable Root Causes:* Oil leaks* Too much lubrication oil in engine* Oil temperature is too high* Too much oil in the valve compartment* Turbocharger seal ring failure* Worn valve guides* Worn piston rings Perform the following tests in order:1. Find all oil leaks. Repair as required. Check for dirty crankcase breather(s).2. Remove extra oil. Find where extra fluid comes from. Repair as required. Put correct amount of oil in engine.3. Check for restrictions in the oil cooler or an oil cooler bypass valve stuck in the open position. Check for high coolant temperature. Refer to P-331: Engine Coolant Is Too Hot.4. Verify the dowel is installed in the left bolt hole of the rocker shaft. This dowel is located between the rocker shaft and valve cover base. Check shaft and valve cover base. Check for dirty breather element.5. Check inlet manifold for oil and repair the turbocharger if necessary.6. Reconditioning of the cylinder head is required.7. Inspect and install new parts as required.P-331: Engine Coolant Is Too Hot
This is NOT an electronic system problem. Refer to Systems Operation, Testing & Adjusting Manual for additional information on the following tests. Probable Root Causes:* Radiator cooling fins plugged* Low coolant level in system* Combustion gases in coolant* Engine cooling fan not functioning properly.* Incorrect fuel injection timing calibration* Faulty pressure relief valve* Restriction to flow of coolant