Reasons: a oil pump impeller clearance check, repair the oil pump. b vacuum table damaged replacement. c Vacuum indicates high value (4Mpa) The suction pipe partially obstructs the cleaning filter and cleans the suction pipe. d The suction pipe is partially sealed and tightly sealed. 2 The gauge has no value (or lower). The reason: a part of the outlet pipe is not tightly sealed so that the seal is tight. b The gauge is damaged and replaced. c Oil pump malfunction / Correct use according to oil pump instruction manual. 3 Power box abnormal sound. Reasons: a car's air pressure is not enough, the power box is not hung up on the air-powered power box will be sufficient gas, so that the barometer reading to 0.3Mpa above. b. The air path is not sealed tightly, and the power box is not hung up to make the seal tight. c The air chamber was damaged, and the power box was not hung up to repair the air chamber. d Too little oil in the power take-off box or with oil or foreign oil. Side View Mirror,Rear Mirror,Truck Mirrors,Rear View Mirror Hana Auto Parts Co., Ltd. , http://www.zjautomirrors.com
Various fault detection methods for refueling vehicles
1. Vacuum indicates low or no indication.