Precautions of the connection of tractor and trailer

In the process of connecting the tractor-trailer to pay attention to the tractor and trailer is connected in all aspects, mainly in connection with the fifth wheel and electrical connection of the road kingpins. 

Connection with the kingpin of the saddle 
Check carefully before connecting tractor saddle surface of the plate if there is enough grease, semi-trailer kingpin, whether there are other foreign matter on the traction skateboard, skateboard ensure traction clean. 
1. Adjust the support legs to make semi-trailer towing slide saddle height and traction adapt generally semi-trailer towing tractor pulling the saddle than the slide on a plane 
central location Low 1-3 cm prevail, be careful not to be too high. Otherwise, not only can not connect sometimes, but also damage to the fifth wheel, traction pin and related 
parts. 
2. The steering fifth wheel locking mechanism, the lock block open, into a free state. 
3. Tractor reverse, tractor and trailer centerline aim to be consistent, two car center line offset is limited to 40 mm or less. Slow Rear tractor saddle at the mouth kingpins 
until you hear "click" sound after, when the locking block return, the tractor and trailer towing success. 
4. Check whether the fifth wheel locking block locking the kingpin, whether to lock securely. 
5. Click the tractor a little forward, check the connections are good. 

Tractor and trailer electrical connection path 
1. The two pipe joints on the tractor (commonly known as the handshake) are respectively connected to the semi-trailer on the two pipe fittings. At this point the tractor- 
trailer's supply line and air supply line connected to the control line tractor and trailer control line connection (note fitting color: the same hue, do not install backwards). 
2. After the gas fitting interconnected to unscrew the gas line on the tractor-trailer connected to separate switches at the ventilation state, or can not supply to the trailer 
brake system, brake system will not work. 
3. Start the engine, observe the cab barometer, the tractor-trailer and the gas cylinder pressure is increased to a predetermined pressure. 
4. Check the gas line for leaks, check the brake system is working properly. 
5. The cables plug into the tractor-trailer in front of the seven-hole socket until it clicks in place on the seven-hole bolt retainers. 
6. Check each electrode bonding well recognized side lights taillights other lights are working properly. 
After hang up the semi-trailer again to confirm the instrument is working properly after you can start with, and I wish the faithful car bon voyage! 

Hubei Changjie Special Purpose Vehicle Co. Ltd 
E-mail: cj802@urspv.com 
Tel: 0086-0722-3229933