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Join Date: Nov 2007
Location: Chandler, Arizona
The ACCTs on the Vulcan are a very poor design, which is made even worse by poor quality materials. They simply wear out from the cam chain guide banging into them constantly. The threads in the body and on the plunger wear down till the plunger is able to back out, making the tensioner worthless. I had a brand new set of oem tensioners fail in 10,000 miles. You cannot rebuild them. Simply replacing the spring does nothing, it is not the spring that holds them in place. The spring simply puts a little tension on them, so they can advance when they have room. But after they get worn, the plunger can bind in the housing, and it won't advance, no matter how good the spring is. You can advance them manually, but they will still back out within a couple hundred miles.
Some people have converted the ACCTs to MCCTs. It is easy enough to do, but just seems like a cheap and cheesy solution to me. The aluminum bodies on the stock tensioners do not impress me with their quality. The TOC MCCTs are all solid steel, they work great, and they will not fail. Vibration has no effect on them, because they are solidly locked in place, unlike the ACCTs. I've ridden over 40,000 miles with them, and they have not had to be adjusted once. For about the same price as the cheap crappy oem tensioners, I consider them well worth the money.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike