BCS 850 grinds in reverse

   / BCS 850 grinds in reverse #1  

Tractorganic

Silver Member
Joined
Nov 22, 2003
Messages
125
Location
Lower CT River Valley/US/Blue Moon Farm
Tractor
NH/TC40D SS; BCS 850, Brush Mower, Sulky, 'Tiller, Chipper, Snow Blower; JD X570-48-A
Sometimes, going down a slope, my 2003 BCS 850 with 30" HD mower attached grinds when I pull reverse. It makes a horrible "SCREEEEE". The clutch and cables are new. It doesn't mater if the PTO is disengaged. Sometimes I can get it to go cleanly into reverse by flipping into forward, then back. Once in a while I have to pull this moose back up the hill; then, on level ground, it works ok. I've tried clutch cable adjustment. I hope I don't have to get into the tiny parts and reverser gears deep inside the transmission! I have tried various service shops in the New England area and satisfaction levels are very low; but, that's another story. Has anyone had similar problems. Advice appreciated!
 
   / BCS 850 grinds in reverse #2  
Sometimes when I flip from forward to reverse my cable gets stuck on a bolt head and does not allow the transmission to engage into reverse. Flipping the lever to forward and back usually helps.

You just reminded me that I need to buy new cables....
 
   / BCS 850 grinds in reverse #3  
Hi! First . Tractor at LEVELL check oil for FULL line mark.
Check clutch adjustment : If input shaft turn you cannot engage reverse gear.
May be some MOLYSLIP additive in gear oil can help
Good luck ! Oldmech
 
   / BCS 850 grinds in reverse #4  
???any binding or brackets that are bent or out of place? Maybe the cable itself isn't traveling as far as it should when you move it? Just guessing that maybe it's an adjustment of the controls????
 
   / BCS 850 grinds in reverse #5  
I recently bought a new BCS 620 Max and it has grinded ever since day one. I hate it, I can't seem to figure out what is going on. The mechanics at the dealer can't either.
Would be nice if BCS told us what was wrong or a least warranted the **** thing.
 
   / BCS 850 grinds in reverse #6  
If it is grinding, something is wrong. Fix it or it will be really bad. Usually grinding from the gears means it is not all the way in gear, so check/adjust clutch cable or shifter cable. 620 does not have reversible handlebars, if it did like my 850, I sometimes need to adjust the reverser cable when I turn the handlebars. Don't know what kind of reverser the 620 has, but that would be the first place I would look. When in doubt, call EarthTools.
 
   / BCS 850 grinds in reverse #7  
If it is grinding, something is wrong. Fix it or it will be really bad. Usually grinding from the gears means it is not all the way in gear, so check/adjust clutch cable or shifter cable. 620 does not have reversible handlebars, if it did like my 850, I sometimes need to adjust the reverser cable when I turn the handlebars. Don't know what kind of reverser the 620 has, but that would be the first place I would look. When in doubt, call EarthTools.

Grinding in reverse nearly always the result of the reverser cable misadjusted. The reverser lever is not pulling the cable not quite fa enough to engage the reverse gear. Loosen the check nut on the reverse cable and back out the adjuster 2 or 3 full turns to pull the reverse gear into engagement. The grinding should stop BUT you want to be sure the cable is not trying to pull the lever too far and stretching the cable. If you feel a lot of resistance at the end of travel the cable is too tight so loosen it slightly by screwing the adjuster in until just normal travel on the lever. There will a little adjustment of the reverse with age and usage but only occasionally.

Be sure the cable is routed with smooth rounded turns and is not pulled tight or kinked.
 
   / BCS 850 grinds in reverse #8  
Not long after a got my 739, I experienced grinding when I tried to go into reverse. The reverser cable simply needed adjustment. The nature of cables when new.
 

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