Operation instruction of WD305 series diesel engine Engine starting

- Jan 11, 2018-

A. Preparations before starting

(1) Check all components and systems to see whether they are in proper order. Check the accessories to see whether they are firmly and reliably connected. Eliminate any abnormality.

(2) Check the cooling system and fulfill cooling water.

(3) Fill the oil sump until the required oil level is reached.

(4) Check the fuel tank to see whether it’s enough.

(5) Check all electrical wiring connections of starting system to see whether they are correctly and firmly connected. Check the batteries to see whether it fully charged.

(6) Feed fuel into the fuel system with hand pump on the fuel feed pump and at the same time loose the vent screw on the injection pump or the vent plug on the fuel filter to bleed air in the fuel system. When no bubble is found in the fuel flowing out of the vent screw or plug, tighten the vent screw or plug. Thereafter, continue to pump fuel until it spills into the overflow pipe, and then lock the hand pump.

B. Starting

After preparations, pressing “ON” button can start the engine under ordinary ambient temperature. If fail at first time, can’t start it again until the motor stops spinning.

Note: To protect the starting motor, the engine should be started within 5 seconds; if not, wait at least 2 minutes before starting the engine again.

At the beginning, let the engine run at a speed of 600-750r/min for a while, and inspect the readings of the gauges, especially the oil pressure gauge. If the oil pressure is never higher than 150Kpa, the engine should be stopped and checked and started again after repairing.

Note: In order to protect the bearings of turbochargers from burning-out, the speed of the engine can’t be increased until the oil pressure raises, especially for those have replaced lubricating oil, oil filter or been closing down for 5 days. Loosen the connecting parts of oil intake pipe till some oil outflows, then increase the speed and load several minutes later.

C. Prewarming, run-in and operation

a. Prewarming for the engine

After the engine has started, it takes some time to form oil layer between crankshaft and bearing, pistons and cylinder jackets. Perfect clearance between motion parts can be gained when all the parts reach their normal working temperature. Therefore, as the heating of the engine, increase the speed from650r/min to 1000-1200r/min to warm the engine up. The engine is allowed to operate at full load only when its outlet water temperature exceeds 55℃, oil temperature over 45℃.

b. Run-in for the engine

For a new engine or an engine after overhaul, the engine must run in for 60 hours before it can be put into full load operation. Otherwise, it may greatly affect the use and lifetime of the engine.http://www.wandiengine.com/