Vehicle failure: the vehicle can't be put into gear after starting, but the reverse gear can barely be put into gear, and all gears are normally put into gear after flameout.
It's not easy to open a shop. Fat brother is a little happy this time. After half a year, a passing car owner finally came to repair the car. It seems that the signboard money at the door is not wasted. The driver said, "My car broke down on the side of the road, and once I stepped on the clutch, I couldn't get into gear. I hope Brother Pang will look at it soon. I am still in a hurry to send it. It is about a few hundred meters away from the repair shop. "
At the destination, Brother Pang mainly checks the following aspects:
The engine is turned off and the gearbox is engaged normally. The gearbox problem has been eliminated.
The clutch pedal feels strong, and the pedal and cable faults have been eliminated.
The clutch contact is a little low, and Brother Pang suspects that the clutch is not completely separated. The field adjustment of clutch cable has little effect.
Brother Pang stepped on the clutch, shifted to first gear with the engine turned off, and then turned the key. Even if the clutch is stepped to the end, the car can still move, indicating that the clutch is in a semi-linkage state.
Fat summary: the problems of pressure plate and diaphragm are analyzed by elimination method, but judging from experience, it is not a three-piece fault, because the clutch contact point is not high and the pedal feels good.
Maintenance steps:
Lift the gearbox for inspection, and disconnect the negative pole of the battery cable before removing the starter.
Open the gear box screw, and the bottom of the gear box is supported by the tray jack.
The glory of the extended version has an additional drive shaft.
Check the platen.
The owner said: 80,000 kilometers to replace.
Turn the release bearing by hand, and there is no hairpin or abnormal sound.
The release bearing is dirty.
Check the clutch rocker arm and fork and find that the fork is a bit loose.
The screw that holds the fork is broken.
The screw is broken.
The fracture of the screw is not very deep, and the broken screw inside can still play a role.
Take out the broken screw inside, it's a little tight.
Use a pistol drill.
It was removed, but the screw was scrapped by Pang Ge.
A rocker arm and a fork.
The position of the clutch cable is about to break, as if it had been welded once before.
The fork is intact and not deformed.
A new rocker arm.
The quality is fine.
With screws.
Fault analysis: the fixed screw is broken, which leads to the increase of the movable clearance between the fork and the rocker arm and wastes the effective stroke of the clutch. The simple understanding is that the shift fork travel is small and the pressure plate and clutch plate are not completely separated. As for why it broke, Fat Brother analyzed that the clutch stepped on it too much, which caused the shift fork shaft to overtravel. After a long time, the shift fork shaft screw is fatigued and broken.
Fat summary: Fat brother now finds a problem. There is something wrong with the design of universal clutch fork. Last time, the screw of a Chevrolet Sail 3 was broken. The difference is that the front fork of the sail 3 is fixed with two screws.
Million car purchase subsidy