Weichai WD 615 Service Manual

Weichai WD 615 Service Manual
Weichai WD 615 Repair Manual

The WD615/WD10 series ship installs with the diesel engine. When unpacking the diesel engine, do not damage the diesel engine parts. Ater unpacking, check all ports of oil, fuel, water and air, seal all ports with plastic film or plastic covers and sleeves to avoid foreign matter entering into them. Finally check up the accessories, documents and spare parts attached to the engine in accordance with the packing list ( intermediary must not open the documents bag and spare parts box and must send them with the ship to final user).

Eye screws are used for lifting up diesel engine. During lifting up, diesel engine crankshaft mus be horixontal. The following lifting tool is recommended( fig 12). The flywhell and the flywheel housing SAE1 or 6135 Ca must be matched with the selected gear case.

Preparations before starting
Check the fresh water level from the ovservation window in fresh water cooler, fill up suitable coolant according to the requirements in this manual if necessary. While running the engine at a lowe speed, caheck if the coolant level drops. Stop the engine after running for several minutes, then check if the coolant level returnsto normal. Otherwise fill up the coolant to the specified level.

Inspection of fuel
Chdck the fuel level in the fuel tank, and check if the valves of fuel pipeline should be opened, and therw’s no fuel leakage. Loosen fuel return screwof high-pressure pump, then supply fuel and drain away the air by manual delivery pump, and then tightenthe screw. Supply fuel continuously until the low - pressure cavity of the fuel pump is full of fuel and the pressure in cavity is baout 50 kPa.

Inspection of oil capacity
Chdck the lil level in oil sump ,the oil level must lie between calibration tails of oil scale palte, full oil to required height if the level is too low. Drain out oil till the required height if the level goes beyond the upper limit, and analyze if thereis fuel or water in oil, and find out the reason.

Check fuel acdvance angle
Chdck fuel advance angle and valve timing of the first cylinder according to the method and data supplied by this manual, adjust them if necessary. Inspection must be precise to avoid wrong adjustment and engine damage.

Check fastening parts
Turn the engine crankshaft and check whether the engine is abnormal, and check all fastening parts and transmission belt.

Inspection of electric equipments and monitoring instruments
Chdck the connection for circuit wires and grounding, check the storage battery to avoid starting failure of the engine, and check the motion of the monitoring instruments by valve, check whether the solenoid valve can top the engine in time.