Jumping Out of Gear

[LandRoverRo]

My SIII has just started popping out of 2nd gear.
Any suggestions as to what might be causing it? Selector rod? Worn gears?

Thanks.

[yorker]

Worn distance piece.

[Jim-ME]

When my origional Rover started popping out of 4th gear it was a bad syncro.

[Dubv1980]

Me too.

Mine pops out of 1st and 2nd. How big of an operation is it to fix whats ailing the transmission?

Chris

[Les Parker]

Gearbox

Hello there,

Do you have an overdrive fitted? Does the speedo fluctuate?
Either of these could indicate a loose mainshaft nut, easy enough to check, remove the top PTO selector cover and see if there is any free play on the lock nut on the rear of the mainshaft.

[LH Drive]

Hello there,

Do you have an overdrive fitted? Does the speedo fluctuate?
Either of these could indicate a loose mainshaft nut, easy enough to check, remove the top PTO selector cover and see if there is any free play on the lock nut on the rear of the mainshaft.

You just described my transmission problem. It only jumps out of first gear so I have to start it in second or hold it in first with constant forward pressure, if not out it goes.

[badvibes]

Les-

My speedo fluctuates wildly, no overdrive fitted. I've had 3rd gear pop out a couple of times on long downhill coasts. Is the speedo thing indicative of a tranny problem? I've wondered what was going on with it and have no clue...

Jeff

[singingcamel]

lube your speedo cable with some graphite ,that should solve your speedo problem... or it may be a bad or worn speedo head.speedo in the tranny can cause this as well but the most common cause is a dry cable gear ..
LH the parts went out today...marc

[badvibes]

Marc-

Thanks for the info. I replaced the speedo cable and lubed it with light machine oil recently. I realize now that may make the cable sticky down the road. I sent you a PM.

Jeff

[jp-]

I thought there was a thread a while back where everyone said that if it jumps out of gear it is bad detent springs (or pins). Is that not the case?

I've never had any Rovers jump out of gear.

[LandRoverRo]

Hello there,

Do you have an overdrive fitted? Does the speedo fluctuate?
Either of these could indicate a loose mainshaft nut, easy enough to check, remove the top PTO selector cover and see if there is any free play on the lock nut on the rear of the mainshaft.

I may sound a little dense here, but where will I find the top PTO selector cover? I'm about to pull out the gearbox, transfer case and overdrive to fix some leaks and look into the gear problem, but if I don't have to, I'll be very happy.
My problem is somewhat sporadic. It goes into 2nd easily but sometimes seems to want to creep out but I think perhaps it's only when my hand is resting on the gear shift (bad form I know, but c'mon, everyone does it).

does this sound like a distance sleeve problem as mentioned earlier?

[TSR53]

The "top PTO Cover" is the black rectangle in the top LH area of this photo.

[Dubv1980]

Hmm, yeah I have those problems

In response to Les's question, yes my speedo does bounce (even after I just replaced it with a new cable after the old one broke) and I do have a Fairey overdrive fitted. What is this piece that may be loose that I need to check...is it something that can be tightened or does it need to be replaced?

Chris

[Les Parker]

Speedo woes

Ref the mainshaft nut access, the plate is the top left hand side one, as shown in Thompson's great picture of a transmission.
As you have an overdrive fitted, you will have to remove the overdrive unit to access the mainshaft nut.
As to the fluctating speedo, the speedo drive is held onto the output shaft by friction only, so if the rear output shaft nut (in the centre of the handbrake drum) has probably backed off and will need to be tightened (to 90 ft lbs).
Removal of the front 4 nuts from the rear drive shaft (prop shaft) is neede to access the rear drive shaft nut.
Another indicator of a loose output shaft nut is a collection of transfer case oil leaking from between the handbrake drum and its backing plate.
Hope this helps,

[Dubv1980]

Thanks!

I'll look into this, sounds like it might be the solution to my problem.

Chris