transmission fan replacement BX2660

captmikem

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BX2660 MX 4800 and a bunch of attachments.
Mar 16, 2017
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Finally had to replace the cooling fan on my 2008 BX2660 with just under 500 hours.

Not an easy thing, but not too bad.

If you are about to do this on a BX2660 be aware of the following:

  • Some you tube videos show (I believe a BX25 series) the coupler is in two pieces and bolts on in front of the fan. This is NOT the case with the BX26 series. It is a solid piece containing the CV joint and the whole thing slides onto the transmission splined shaft. The drive shaft, with splines and the collar with the CV balls fit into this one piece. The fan bolts to this solid piece.
  • There is not enough room to slide the shaft fwd without moving the engine fwd 2 to 3 inches. Again you tube videos show a piece mounted to the back of the engine that can be removed to gain space, this is not so with the 26 series. The CV coupler bolts to the engine, and again the splined shaft with the 4 balls slide into this coupler.
  • Lifting and moving the engine fwd 3 inches is not hard at all, but you must remove the fwd motor mounts (easy thing, 2 nuts per side and it is free) and just the top nuts on the aft motor mounts.
  • You do NOT need to disconnect any hoses etc from the engine to move it fwd 3 inches.
  • Removing the mat first makes it easier to remove the floor pan.
  • Don’t forget to replace the little O rings under each ball in the CV joints.
  • The handles on either side of the fenders have bolts coming up from the bottom into brass inserts in the handle base, the aftermost two of these bolts need to be removed to remove the fenders (the fwd ones do not need to be removed). On my tractor these inserts spun free with the bolts. Once out I used JB weld to re secure them into the handles.
  • The MMMower height adjuster knob and the hyd lift flow valve knobs simply pull off.


I keep my tractors pretty clean, but the amount of dirt built up under the floor pan, and packed around the top of the transmission was amazing.

Since I had it apart I serviced both front and rear CV joints… Funny I had a slight vibration that I had posted about here on the forum a few years back. Seems most folks thought it was my phone in my back pocket or my imagination. It came and went but was there when the tractor was sitting still or moving. That vibration has gone away now.



A LOT of work for a $6.50 fan. But it gave me a chance to service and clean my tractor.



M
 

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leveraddict

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2017 BX23S 60" LP BoxBlade 54" mower 60" BackBlade EA 12" 1 bottom plow & Forks
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Great write up and pics for your version BX! Mine is the BX23S and I hope I never have to do that! My question is can you just remove the floor pan without too much other parts removed first for cleaning purposes?
 

GreensvilleJay

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I'll never have a MMM on my BX23s but wondering if using air compressor and a long wand would get rid of the grass/gorf buildup or maybe a pressure washer ?
Does that unit not have a 'fan guard' ? My tractor does, right from the factory !
 

RCW

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Very nice write up Mike.

I checked mine this fall, all good.

Jay - my BX2360 does have a guard, but there’s not much to it. I still put a BXPanded under plate on it for dirt and brush work.

Seems like someone said the newer BX’s have a better guard, so yours may be a little more stout and effective.
 
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Henro

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B2910, BX2200, KX41-2V mini Ex., Beer fridge
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Captmikem, thanks for taking the time to post your write up. I am sure it will be very helpful to others in the future!

Great job!
 

B737

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just wanted to add to this thread in case someone searches in the future, here is BX2350 procedure, sounds identical to BX26.

And another link that depicts the CV joint "dampers", I had never seen anything like those before


 

captmikem

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Lifetime Member

Equipment
BX2660 MX 4800 and a bunch of attachments.
Mar 16, 2017
144
18
18
SW Washington State.
And another link that depicts the CV joint "dampers", I had never seen anything like those before
I used O rings from my Harbor Freight assortment, would not have known they were there if I had not saw them on a you tube vid.

You must fly 73's My wife flew them for years, now is flying 787's Always said it was a great plane.

M
 

B737

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Hey mike! I'm on the triple, but with all these staffing changes there is no telling where things end up.

I think the BX fan is a bit of an indoctrination to the breed :)
 

captmikem

Member
Lifetime Member

Equipment
BX2660 MX 4800 and a bunch of attachments.
Mar 16, 2017
144
18
18
SW Washington State.
Hey mike! I'm on the triple, but with all these staffing changes there is no telling where things end up.

I think the BX fan is a bit of an indoctrination to the breed :)
Wife's favorite is the triple, she loved flying it but when we moved to the PNW had to switch to the 78. She is with AAL.

I think you are right on the indoctrination, work, but but good to get it apart and take care of a bunch of small items that would not happen otherwise. Good machine, seemed to be a good size but I did not realize how small it was until I got my MX. I really like them both, Good machines.

M
 
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whitetiger

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Kubota tech..BX2370, RCK60, B7100HST, RTV900 w plow, Ford 1100 FWA
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just wanted to add to this thread in case someone searches in the future, here is BX2350 procedure, sounds identical to BX26.

And another link that depicts the CV joint "dampers", I had never seen anything like those before


Just for clarification of future searches, there is no BX26. The BX2660 is actually a BX60 series.
Here is a chart I made sometime back for BX tractors.
 

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GeoHorn

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I used O rings from my Harbor Freight assortment, would not have known they were there if I had not saw them on a you tube vid.

You must fly 73's My wife flew them for years, now is flying 787's Always said it was a great plane.

M
Do you mean to say that for “dampers” you used O-rings instead of the genuine part?

Did the OEM part appear to be nitrile? Or other?
 

Henro

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Just for clarification of future searches, there is no BX26. The BX2660 is actually a BX60 series.
Here is a chart I made sometime back for BX tractors.
l looked at Whitetiger’s chart but did not save it. When I looked again yesterday and also today, it doesn’t appear and a notice is given that “Something is wrong, try again later...”

Wondering if it is something at my end, or a site issue. It was viewable previously. Very informative chart. I would like to save a copy For future reference!
 

whitetiger

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Kubota tech..BX2370, RCK60, B7100HST, RTV900 w plow, Ford 1100 FWA
Nov 20, 2011
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Kansas City, KS
l looked at Whitetiger’s chart but did not save it. When I looked again yesterday and also today, it doesn’t appear and a notice is given that “Something is wrong, try again later...”

Wondering if it is something at my end, or a site issue. It was viewable previously. Very informative chart. I would like to save a copy For future reference!
I saved you a copy.. :cool:
 

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