ford 6610 grinding gears, and hot trans area

wlf89 · Sep 9, 2018

got a 1987 6610 that is grinding gears, dont do it all the time if i can time it right and shift straight from reverse to a forward gear just as it is barely moving. but from a stand still it will normally grind going in. and on the road it grind going into 3rd and 4th. all i see in manual as far as adjustment is the clutch freeplay, is that the only adjustment you can make?

and also when cutting and raking hay i have noticed that the transmission area gets really hot, is that normal for these tractors? my other tractors get pretty warm after several hours in hot summer heat but this one is good bit hotter.

Bern · Sep 9, 2018

That tractor can have a non-syncro as well as a syncro tranny. The non-syncro tranny will have two reverse speeds (not counting the Dual
Power, if equipped), whereas the syncro tranny will have four reverse speeds. Which one do you have?

If you have the non-syncro tranny, it's all about operator timing with regards to shifting on the fly without clashing. If you have a syncro
tranny, it shouldn't clash, period, regardless of the operation of the clutch.

As for heat buildup, if that tractor has the double pumps and something is causing a remote valve to stick, that will make the system get
real hot in a hurry. Make sure that any remote valves are in neutral if they're not in use. If you're pulling a hydraulic rake, make sure
there are no restrictions in the line like there might be if the rake was used on a JD closed center system prior.

Destroked 450 · Sep 9, 2018

Berns correct, my 6610 has the 8x4 synchro trans, it'll grind when shifting between low and high range but never grinds when shifting 1st thru 4th.
If yours had the standard 8x2 non synchro trans how much it grinds between gears all depends on the operator.

wlf89 · Sep 9, 2018

(quoted from post at 12:22:22 09/09/18)
Berns correct, my 6610 has the 8x4 synchro trans, it'll grind when shifting between low and high range but never grinds when shifting 1st thru 4th.
If yours had the standard 8x2 non synchro trans how much it grinds between gears all depends on the operator.

it has the standard 8x2. should it grind from a dead stop and putting it in gear? and how do you time the shift of a non synchro tractor?

it has the dual pumps and dosent seem to have a valve sticking, i can hear a change in noise when i engage a remote, when running the loader i do lock the valve to get power to my joystick, but it gets hot just using the stock valve just to raise and lower my rake to so dont think that is really affecting anything.

Destroked 450 · Sep 9, 2018

Yea sometimes they'll grind from a stop.
Check your pedal adjustment, if the clutch is trying to engage near the foot board that would cause it to grind more.
Sometimes I push the pedal down and wait a few moments for the gears to wind down, idling the engine down helps.
Shifting on the fly is a learning game, I can roll thru the gears on my 4000 without hardly grinding a single gear, I've only had the 5000 for a couple of years and it has shorter shift levers, I think I grind every gear on that tractor.

David G · Sep 9, 2018

I have a 6610 with 8x2 and shuttle shift.

The case gets HOT.

Mine never shifted from F to R, without stopping, should it?

Bern · Sep 9, 2018

The 8x2 transmission is NOT a true "shuttle shift", meaning it's not designed to be shifted F-R on the fly. It's a crashbox transmission in the true sense of the word.

That said, if you know what you're doing, you can shift between F-R without clash only if you come to a complete stop BEFORE you ever move the shift lever. If you do this many times, it becomes natural, and you'll enjoy the time savings, not having to wait for the gears to coast down.

As for the case getting hot, understand that 140-160-180 degrees is hot to you and me, but not that big of a deal for the tractor. The later tractors with electronic dashes did not set off any alarms until the oil temp got over 200 degrees.

ford 6610 grinding gears, and hot trans area

wlf89

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Destroked 450

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Destroked 450

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David G

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