Sheared Mount Bolt on Serpentine Belt Tensioner

[Spamcan]

Aside from the obvious "drill a hole and use an easy-out at home" remedy.

Stupid me mis-understood a video (or mis-remembered) and went to dismount the Serpentine Belt Tensioner with a star bit and 3/8 ths inch ratchet. I thought the author said its thread was lefty-tighty, righty-loosy. What I didn't remember was he was talking about the tensioner's pulley bolt.... NOT THE TENSIONER'S MOUNTING BOLT !!!! Guess what happened.... Yeah, it did!

So, I'm trying to find out A) if the base to which the tensioner assembly mounts is on a "cover" of some sort which can be unbolted from the block; it's not readily obvious, visually. This so I can take it to a machinist to have the bolt stub removed in the proper environment by a "pro".

B) What major components must I dismount from the engine to gain access to remove said cover?

The bolt sheared off with only a couple of mm protruding from the tensioner's mating surface..... not enough to grip it with anything.

I estimate that I was applying about 200 ft/lbs of torque when it snapped!

 

[crazykid1994]

Aside from the obvious "drill a hole and use an easy-out at home" remedy.

Stupid me mis-understood a video (or mis-remembered) and went to dismount the Serpentine Belt Tensioner with a star bit and 3/8 ths inch ratchet. I thought the author said its thread was lefty-tighty, righty-loosy. What I didn't remember was he was talking about the tensioner's pulley bolt.... NOT THE TENSIONER'S MOUNTING BOLT !!!! Guess what happened.... Yeah, it did!

So, I'm trying to find out A) if the base to which the tensioner assembly mounts is on a "cover" of some sort which can be unbolted from the block; it's not readily obvious, visually. This so I can take it to a machinist to have the bolt stub removed in the proper environment by a "pro".

B) What major components must I dismount from the engine to gain access to remove said cover?

The bolt sheared off with only a couple of mm protruding from the tensioner's mating surface..... not enough to grip it with anything.

I estimate that I was applying about 200 ft/lbs of torque when it snapped!


View attachment 244591

If it’s a steel bolt have someone weld a nut to it instead of drilling it out. Can generally be done on truck if you can get a mobile welder

 

[Spamcan]

UPDATE: I dove into it anyway, and discovered that, indeed, the A/C compressor has its own mount. Also, the air pump, alternator, tensioner pulley, idler pulley are also on a separatable bracket mounted to the front of the engine. I removed that bracket and saw that my broken bolt was protruding from the its back by about half an inch. Using a Dremel tool, I cut a slot for a common screwdriver and was able to revove the bolt.... Yippeeeeee.

@crazykid1994 - I like the idea of welding a nut,to it, though!

 

[kmrtnsn]

Good job working through the problem!

 

[chri5k]

Don't you just love a happy ending?