How To Check and Maintenance The Truck Head Saddle ?

Truck head saddle as a semi-trailer train connected to the key components of the force, which in the process of vehicle operation by the multi-dimensional spatial moments, alternating loads and dynamic impact, etc., the force system is complex, the use of higher requirements. Generally speaking, the saddle and the quality of the traction pin itself will not appear any problem, but some customers feedback truck head traction pin wear and saddle damage failure, the reason is often neglected routine maintenance caused by. This article will show you how to do truck head saddle maintenance.

 

1. Truck Head Saddle Clean Work

 

a. Check the surface of the truck head saddle and the surface of the semi trailer traction plate carefully to see if there is any bump damage, burr, welding slag, welding tumour and other foreign matter, if there is any, and then repair and grind them in time, otherwise, it will cause abnormal wear and tear of the saddle and the traction plate in the later stage and the problem of straining.

 

b. When adding grease for the first time after cleaning the saddle and traction plate, try to add blue, black-grey, brown lithium grease. Plain yellow calcium-based grease is not recommended.

 

 

2. Kingpin Wear Inspection

 

a. In the case of the 90# kingpin, for example, the saddle locking mechanism is unable to compensate for the wear of the semi trailer kingpin by more than 4 mm (the diameter is lower than 86mm) and the traction pin must be replaced immediately.

 

 

b. If the 50# traction pin is worn out, the diameter is lower than 48mm, cracks or abnormal damage, it should be replaced in time.

 

 

3. Checks Based On Mileage

 

a. Run about 1000KM must be the saddle, traction plate, traction pin lubricating grease for thorough cleaning and inspection (can be cleaned with diesel fuel) and refill grease. After that, replace the grease and check every 6000-8000KM (when replacing, it must be cleaned thoroughly).

 

b. Every 40,000KM or if there is loose impact sound when starting or braking, the adjusting screw on the side of the saddle should be rotated counterclockwise to adjust the gap between the saddle locking hook and the traction pin.

 

c. Check the wear status of saddle wear ring, locking hook, saddle panel and trailer towing pin every 40,000KM or so, and replace them in time if they are worn out.