Loose pinion

[Anonymous]

When I was reassembling my 3559 dump car, I noticed that the pinion on the shaft that turns the bin is slipping on the shaft.  Would liquid super glue hold it tight on the shaft? As always any info would be appreciated.

 

                                                                                               Jim

[trainmasterz]

not sure, maybe some jb weld otta holder better?

One thing I'm sure of, is the Pa guys are "comin outa the woodwork"

I wonder if the "Rebs" and their leader Chief  are feelin the pressure? Just kiddin, of course.

Let the record show, Chief is the reason I decided to start posting "he seems like a nice guy"

 

[thor]

Should do, depends on the materials. There ae super glues made for plastics, gap fillers and the original thin one which works best for creeping into fine gaps. However if the shaft and pinion are plastic you might be better off with the plastic glue and if the gap is really loose maybe the thicker glue. Me, I'd first try the thin stuff and if all else fails my favorite for last ditch glue jobs is epoxy.

[jkerklo]

I first try to use a mechanical technique for holding a gear on a shaft.

The shaft probably has a few "grooves" around it where the gear is supposed to seat.  These grooves are from a mechanical deformation that produces raised edges that grip the gear.  If the gear slips, they are worn down. 

The effect of the grooves can be replaced with a center punch.

An automatic center punch (the kind you push and it "snaps" to form the dent) is first to try.  If there are grooves, then use them to identify locations for punch marks.  If there are no grooves, then mark the shaft where the gear is located.  A few detents around the shaft will work.

A center punch and hammer can also be used, but the shaft has to be removed and set on a metal block.

Go lightly.  A heavy hit can deform the shaft or make a dent so large the gear can't be pushed over it.

John Kerklo
www.Three-Rail.com

[Anonymous]

I would like to thank everyone for their suggestions.  I bought Loctite Professional Super Glue, and it worked great.  I probably couldn't break the pinion loose if I wanted to!  Thanks again for the suggestions.

 

 

                                                                                     Jim