At 01:00 AM 6/12/2018, Steve Jasik wrote:
>Thank you, you are one of the few people who
>would know that the blades bend at high RPM.
>I have 3/8" & 1/2" impact wrenches,
>but may not have enough air pressure in my compressor.
>The other problem is space, do you use a right angle impact wrench ?
Space is not a problem. You can get a straight shot at it.
>The manual mentions removing the water pump pulley,
>do I really have to do that ?
>Where do I get an original ZR-1 fan from ???
From someone that has a defective OE ZR-1 alternator on their junk shelf.
>On 6/12/18 12:43 AM, Marc Haibeck wrote:
>>We have seen the problem with bent fan blades
>>on other reconditioned alternators. The blades
>>bend back the first time the engine is run over
>>6000 rpm. Straightening the blades won't help.
>>They will just bend again. We solve the problem
>>by transferring the OE fan to the new
>>alternator. It's interesting to note that a L98
>>or LT1 engine can't rev high enough to have this problem.
>>There is no need to remove the alternator. It's
>>easy to remove the nut with an impact wrench.
>>Also, check to see if the pulley is in line
>>with the other pulleys. If not the belt may squeak until it warms up.
>>At 08:29 PM 6/11/2018, Steve Jasik wrote:
>>>2 weeks ago my 93 ZR-1 started making noise
>>>that one observer felt was the rebuilt alternator I had installed 150 miles ago
>>>I just removed the fan belt and initially
>>>noted that the alternator was "frozen".
>>>Upon closer inspection I found out:
>>>Marc, George, Rick, ...
>>>I figured out what the problem is:
>>>The alternator fan blades are scraping against
>>>the front of the alternator housing as one can see from the picture.
>>>Now that I think about it, when Autozone
>>>delivered the replacement alternator it had
>>>the L-98 pulley on it and we swapped pullies
>>>insted of rejecting it as I never thought that
>>>GM would make such a subtle difference in alternators among models,
>>>BUT apparently they do as when I looked for C4
>>>Corvette alternators there were different ones for many of the years,
>>>Thank you GM :-(
>>>Now¬ the fan has one or more broken blades,
>>>and I need a special s shaped 15/16" (or 24mm)
>>>wrench to get the fan blade off without
>>>removing the alternator, if that is a possible solution.
>>>Hopefully there is a special shim or such to
>>>make for appropriate fan clearance, ...
>>>What a F..king PITA for a part that should be standard, ...
>>>Is there anyone who knows what the difference
>>>between the L98 & LT-5 alternators is ???
>>>TOPICS: TECH or SALOON
>>>Problems? Contact ZR1Mom at: [log in to unmask]
>>>ZR-1 Store @ http://www.zr1net.net
>>>ZR-1 Saloon Keeper
TOPICS: TECH or SALOON
Problems? Contact ZR1Mom at: [log in to unmask]
ZR-1 Store @ http://www.zr1net.net
ZR-1 Saloon Keeper