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Oil Transfer Pump of Diesel Generator



Oil pump is an important part of diesel generator. In the process of using the diesel genset, only regularly checking and maintaining the oil transfer pump can guarantee the normal operation of the generating set.
Maintenance tips

1. Before installing the oil transfer pump on diesel generating set, check whether the model and specification are correct or not; remove rust preventive oil and choose the appropriate thickness gasket. In order to avoid piston running improperly, the gasket should avoid too thin or thick, and the tightening torque should be uniform to prevent damage to the oil pump.

2. The coarse filter core within the oil pump is easily blocked by cotton and other dirt, you should reguarly check and clean it. If the strainer is damaged, you should repair or change it timely.

3. There is a rubber seal between the hand oil pump piston and the hand oil pump body. Do not remove the rubber. If the rubber ring is damaged, you should replace it timely.

4. Ensure the elasticity of Four springfor plunger oil transfer pump. Four springis divided into piston spring, tappet (roller) spring, oil inlet valve spring and oil outlet valve spring. If the spring elasticity is weakened or broken, you should replace it timely or add pad to adjust to avoid causing damage to the diesel generator.

5. The hand oil pump of the generator set must be pressed back after using, at the same time, tightening the button to prevent oil leakage that is caused because the pressure is not tight between the hand oil pump and the rubber ring.

6. After using the oil transfer pump for a long time, checking the parts. If the phenomenon like the wear, sag, and pocking mark appear on the valve surface, it should be repaired timely or replaced.

7. When the diesel generator set is in the state of parking for a long time, to prevent the piston and the pump body or the tappet and the tappet suit from being corroded by water, the rust preventive measures must be taken. When the generator set is power off, you should replace the lubricating oil (contains water, diesel oil and other impurities) in the sump of fuel injection pump.

How To Change Lubricating Oil And Oil Filter
Below is the detailed information of changing lubricating oil and oil filter for Shangchai W series diesel engines. The content includes steps to change lubricating oil and oil filter, changing fuel filter, priming fuel system and general knowledge of water separatior.

I. Changing Lubricating Oil And Oil Filter
Warning: Be careful when changing lubricating oil and oil filter because skin contact with the hot oil or hot engine surface can cause scald.

(1) Don't stop the engine until the temperature of the coolant reaches 60, then remove the oil drain plug. scrap the washer and drain the oil.

Caution: Do not drain lube oil when the engine is in cold state at which foreign particles has deposited and attached to the bottom of the oil pan, and will not drain with the oil. When the lube oil is warm, foreign particles suspend in it and can easily drain with it.

(2) Clean the installation surface of the oil drain plug on the oil pan. Install the oil drain plug with a new washer and tighten it to 200±20 N-m.

(3) Clean the outside surface of the oil filter. Remove the oil filter with tool and scrap it. There are three oil filters on the engine and all three filters should be replaced at the same time.

(4) Clean the filter head and its seal surface. There should be no old O-ring left.

(5) Before installing a new oil filter, fill it with clean oil from the 8 peripheral holes. The oil level should be 3 -15 mm below the threaded hole. Apply a light film of Vaseline or dean lubricating oil to the O-ring on the new filter to form a lubricating film,

Caution: Do not add oil from the central! hole of the filter.

(6) Turn the filter by hand until the O-ring contacts the sealed surface of the filter head, and further tighten it to 45 ±5 N-m or 3/4 turn to one turn with tool.

(7) Open the filler cap, and fill the engine with clean engine oil until the oil level is near the upper mark (high level) in the oil dipstick. The capacity of the oil pan is 75 L.

(8) Start the engine and keep it running at idle, and then check the oil filter and drain plug for oil leak.

(9) Shut off the engine, wait for about 15 minutes to provide enough time for the oil to flow back to the oil pan, and check the level. If required, add engine oil until it is near the upper mark (FULL) in the oil dipstick.

(10) Install the filler cap and tighten it until you feel suitable.

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