1、 Oil leakage from the fuel tank supply switch: The reason is that the graphite and asbestos oil seals at the switch are damaged.

Exclusion: 1. Remove the switch, remove the packing, and use oil resistant rubber sheets to make two circular gaskets with an outer diameter 1mm larger than the switch housing hole and an inner diameter 1.50mm larger than the handle screw. Clamp the rubber gasket in the middle of the steel gasket, and then cover it together on the handle screw. Tighten the gland device. 2. Wrap graphite and asbestos ropes between the two steel pads and fill them, then tighten the gland device.

2、 Oil leakage from the fuel tank drain tap: The reason is that the steel ball inside the tap is rusted or ineffective.

Exclusion: Replace the steel ball (with a diameter of 15mm, which can be replaced by a steel ball inside a bearing with an inner diameter of 80mm).

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3、 Oil leakage from the oil pipe bell mouth: The reason is that the conical surface of the oil pipe bell mouth and the bell mouth seat are not well sealed.

Exclusion: 1. Screw in the end with the horn before screwing in the connector. 2. After grinding the bell mouth joint, apply sealant to the conical surface, then tighten or saw off the bell mouth, and use an expanding tool to re expand one.

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4、 Hollow screw joint leaks oil: the reason is 1. The end face and gasket of the oil pipe joint are uneven; 2. The screw holes on the shell are uneven.

The troubleshooting method is as follows: grind the joint and gasket flat. Flatten the hexagonal inner surface of the hollow screw, then tighten it or apply sealant on both sides of the washer.

GAMA Gavin@gamagr.com