help with adjusting "bands" in tranny.

71grande · 07-30-2002, 12:04 PM

ok, I know my tranny is slipping, and I keep hearing about people adjusting the bands in their trannys, but what are these bands? Where are they? Do I have to drop my pan to get at them? what do they do? how do you adjust them?

Mike

Rev · 07-30-2002, 06:11 PM

I know how to do it on my C-4, but am totally unfamiliar with the FMX. On the C-4 anyway, the bands are adjustable externally. a sqaure head shaft protrudes form the side(s) of the transmission and is threaded with a lock nut to hold the adjustment. For the low-reverse band the shaft is threaded into the transmission untill 10 ft/lbs torque. The shaft is then backed out 3 full turns and secured in that position with the lock nut. The intermediate band is adjusted the same way except that it is backed out only 1 3/4 turns.

The bands function is to lock and unlock drums inside the transmission. The bands are actuated by servo pistons that are driven by transmission pump line pressure. These bands are only tightened during 1 st and 2 nd gear. They are unlocked in high gear. If the bands are causing slippage, it would be in 1 st or 2nd gear (maybe reverse too). I don't think band adjustment can cause slipping in 3 rd gear.

I think the C-6 has only an intermediate band and no low-reverse band. On the FMX, I don't really know.

Rev

71grande · 07-31-2002, 10:40 AM

Coo Thanks. Ill crawl under my toy tonight and look around.

Mike

07-30-2002, 12:04 PM	#1
71grande Registered Member Join Date: Jul 2002 Location: San Clemente CA. Posts: 85	help with adjusting "bands" in tranny. ok, I know my tranny is slipping, and I keep hearing about people adjusting the bands in their trannys, but what are these bands? Where are they? Do I have to drop my pan to get at them? what do they do? how do you adjust them? Mike __________________ A great man once told me, "..." Well any way I guess that he wasn't that great. My garage: 1971 Mustang Grande, MSD6A, 625 Road Demon JR, Edelbrock Performer manifold, Hopes and Dreams... 1970 Norton 750 Commando 1993 Saturn SC2. The wifeys. fuzzy dice and all.

07-30-2002, 06:11 PM	#2
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	Band adjustment I know how to do it on my C-4, but am totally unfamiliar with the FMX. On the C-4 anyway, the bands are adjustable externally. a sqaure head shaft protrudes form the side(s) of the transmission and is threaded with a lock nut to hold the adjustment. For the low-reverse band the shaft is threaded into the transmission untill 10 ft/lbs torque. The shaft is then backed out 3 full turns and secured in that position with the lock nut. The intermediate band is adjusted the same way except that it is backed out only 1 3/4 turns. The bands function is to lock and unlock drums inside the transmission. The bands are actuated by servo pistons that are driven by transmission pump line pressure. These bands are only tightened during 1 st and 2 nd gear. They are unlocked in high gear. If the bands are causing slippage, it would be in 1 st or 2nd gear (maybe reverse too). I don't think band adjustment can cause slipping in 3 rd gear. I think the C-6 has only an intermediate band and no low-reverse band. On the FMX, I don't really know. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

07-31-2002, 10:40 AM	#3
71grande Registered Member Join Date: Jul 2002 Location: San Clemente CA. Posts: 85	Coo Thanks. Ill crawl under my toy tonight and look around. Mike __________________ A great man once told me, "..." Well any way I guess that he wasn't that great. My garage: 1971 Mustang Grande, MSD6A, 625 Road Demon JR, Edelbrock Performer manifold, Hopes and Dreams... 1970 Norton 750 Commando 1993 Saturn SC2. The wifeys. fuzzy dice and all.

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