摘要: |
Howard Ostle does not mince his words. "We're terrible at drawbar coupling maintenance in Britain," he states; and as UK sales and marketing manager at VBG Group Sales, he has seen the consequences of a lax approach taken by too many operators. A key player in the drawbar sector, VBG has recently rolled out a range of couplings with new power actuators and locking devices. They are unlikely to live long and healthy lives, however, if workshops decide to slap grease all over them in them in the way they might grease a fifth wheel (pictured, right). He warns: "You never, ever put grease on a drawbar coupling's jaws, because if you do, it will act like a grinding paste." The coupling is far closer to the road surface than a fifth wheel is, he points out, and that means it is closer to all the dirt and grit that highway surfaces generate. Combine all this detritus with grease, and you have a recipe for trouble. "Use plenty of lubricant instead," Ostle advises. "Oil is a cheap mechanic, and if you lubricate a coupling, then you won't get a problem." Paul Clayton, UK technical sales and support manager at Jost, agrees that plastering everything with grease can be harmful. "We have Rockinger couplings available with automatic lubrication systems," he adds. Rockinger is one of Jost's brand names, and sits alongside Tridec and Edbro. |