Nobody thinks about landing gear until it won’t crank with a loaded trailer on it. Those two legs hold the front of the trailer when it’s off the tractor, and the two-speed gearbox lets you wind it up fast with no load and then drop into low gear to take the weight.
The warning signs
A handle that’s getting hard to turn, slips between gears, or grinds is the gearbox telling you it’s wearing out. Add bent or buckled legs from a hard drop, grease weeping from the box, or feet worn through, and you’ve got a set on borrowed time. Catch it before it seizes with a trailer on it and you’ll save yourself a roadside mess.
Keeping a good set alive
Grease it on schedule through the zerks, always crank fully into high or low (never leave it parked between gears), and keep both legs synced so the load stays even. A quick look at the feet and mounting bolts during PM catches most trouble early.
Replacing it
When a set’s done, replace both legs — they work together, and a new leg paired with a tired one twists the cross-member. Match the speed type (almost everything on the road is two-speed), the mounting, and which side the crank’s on.
GBK landing gear cross-references the common brands — JOST (the A400 series turns up everywhere), Holland, and SAF-Holland. Browse landing gear and confirm the cross-reference on the product page, or send your current model over.
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