Took off alternator and belt tensioner to replace an aluminum heater hose fitting that was leaking . Replaced the pulley on belt tensioner.reinstalled the alternator and tensioner.Before putting the belt back on I went to spin the fan on the alternator and noticed it is touching the tensioner.It wasnt before.i took them off.Will this be alright since when I install the belt it will separate them or is this a problem.

My tensioner pulley is misaligned now also

Sounds like something didn't quite go back together right. Can you post some pics? Maybe that will help us find it.

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WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights

So I've actually had this happen after reassembling a Bonneville alternator. The shaft caged bearing that presses into pulley side alternator casing backed out. The only other bearing is a needle bearing on the other side and it won't stop movement axially. I tried pressing the bearing back in and it backed out again. I never tried a new bearing but unless the outer race of a fresh bearing is larger, the same thing will happen again.

Unless you want to mess with having it all apart, finding a new bearing, hoping it stays put, you're better off replacing the alternator.

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95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
02 Jag X-type
03 BMW M5
05 Chevy Cobalt LS
07 Infiniti G35s 6MT (Sold)
07 Ducati Monster S2R 800 with DS1000 swap
83 Yamaha IT175K
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.