Carrier gearshift binds in first gear

[Scrivo18]

Hi

Thats the drama my carrier had, one of the rods actually started to come out of the top plate, very difficult to shift gear, espially in front of a fire front, I had to give it a very smart kick!!

Tim

[Lynn Eades]

Pull it to bits, and clean it up. Then you can hopefully eliminate it as the problem.
When someone recons one of these boxes, it may mean nothing happened to the top of the box.
As you can see, there are three holes in line with the three selector shafts. Above each shaft is a ball brg. followed by a spring. On the opposite plane are two pellets between the three shafts. these are interlocks, which in conjuction with a floating pin in the center shaft, prevent you from selecting two gears at once.
At one end there are core plugs (or frost, or welch) which can hold a fair bit of gunge.
Its worth the effort to go through it. Pull it to bits slowly, taking careful note of how it all fits together (your photos will help a lot.
The shaft with no fork is for reverse. The one at the front of the box is for third and top gear, and the other one selects first and second. If you have any problems, I can walk you through it.
There are other areas that can cause your trouble too, as George said. If your clutch is dragging it makes selecting a gear harder to do. If this is the problem, it will be noticeably different when the engine is running, and not running.
Any questions, Just ask. It may help someone else.

[Ron Pier]

All this talk of gearshift selection problems got me worried about my own carrier, as I haven't put it in gear for some time. I did overhaul my box myself about 12-13 years ago.As Lynn mentioned, I didn't touch the top cover though. Anyway I just braved my way through 1" of snow in my carpet slippers to the shed.(Life is tough here you Canadians!) Anyway fired up the carrier and she slips nicely into all 5 gears. ( phew!) Ron

[Blackpowder44 (RIP)]

When you come to put the this assembly back on I would advise you to have someone to help you. My friend lay on his side alongside the engine on the drivers side and tried to see that the two shifter forks lined up and I was on the other side to align the reverse rod.As I said we found it a pig of a job as you couldnt see exactly what was going on. It took us about 6 tries before we got it right. For the first 5 tries everything seemed o.k. but when we tried to engage a gear it was still lockes up due to non alignment. My advice, find a friend who is mechanically minded and a good supply of cigs and tea. All the best, John.

[Big D]

Gidday again

I stripped down the top of the gearbox tonight. I took a series of photos as I went. Damn handy these digital cameras.

The shifter rods certainly have some corrosion on them. The bores in the gearbox top seem pretty good though.

What's the best way to clean the rods up? Just a bit of emery paper and some elbow grease?

Cheers

Darryl

[Ron Pier]

Either that or a wire wheel Darryl. Then a good coat of copper slip on assembly to reduce the problem in the future. Ron

[Lynn Eades]

If it all looks O.K. put it back together. Grease the bores, the little pin in the centre shaft, the two pellets in thier bores, and put some gease in the holes for the detents. As you have probably worked out, you can only move a shaft when the other two are in the neutral position. To put your selector shafts back in , put a spring in its hole, followed by the ball. push the selector shaft in part way. using a bit of rod, or suitable punch,(smaller in dia. than the ball) push the ball in, push the selector in to meet the punch, hopefully the selector shaft has ridden up onto the ball, holding it in. withdraw the punch, and push the shaft home. The rest should be easy.