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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: BJ on July 23, 2010, 08:33:55 AM

Title: 8V71 air box blower
Post by: BJ on July 23, 2010, 08:33:55 AM
this is going to be interesting question. But, I have a leak in my reduction gear box on my air box (fans)  I have witnessed several of these being removed with much work and cussing. Has anyone used instead of oil a good quality grease?
Title: Re: 8V71 air box blower
Post by: luvrbus on July 23, 2010, 09:56:31 AM
Those are oiled from the engine the 1/4 inch tube on the rear is the supply then it dumps back to the engine at the front I have no idea what you are calling fans

good luck
Title: Re: 8V71 air box blower
Post by: Fredward on July 23, 2010, 10:22:53 AM
I think he means the fan drive gearbox for the engine cooling squirrel cage fans?
Title: Re: 8V71 air box blower
Post by: luvrbus on July 23, 2010, 10:32:48 AM
Why would he post 8v71 air box blower ? this one is not real clear to me  lol
Title: Re: 8V71 air box blower
Post by: BJ on July 23, 2010, 11:17:09 AM
OK squirrel box fans that blow air sucked through the radiators onto the engine. And no they are not oiled from a tube. The seal is leaking and these can be a real pain in the a-- to remove, blower fans and reduction drive gearbox.  I hope that clears up what I called air blowers (they do blow air) sorry about that....Can anyone answer the question I posted?
Title: Re: 8V71 air box blower
Post by: luvrbus on July 23, 2010, 11:22:00 AM
yea they used gear lube for a reason inclosed gears in a mitre box don't get along with grease


good luck
Title: Re: 8V71 air box blower
Post by: BJ on July 23, 2010, 11:25:44 AM
 :-\  well shucks I guess I will have to keep a real close eye on the oil level glass..thanks
Title: Re: 8V71 air box blower
Post by: kyle4501 on July 23, 2010, 11:32:10 AM
There are some snake oil seal conditioners that will swell up the seals & may slow down or even stop the leak for a short time - if it is a seal leak.

Might help with the leak until you can fix it properly.
Title: Re: 8V71 air box blower
Post by: BJ on July 23, 2010, 11:40:31 AM
Kyle I tried diesel fuel trying to swell the seal, no go. It is not major but if you don't check it and add oil @ fuel up you might have problems  >:(  It is a major job to just get the fans off the shaft on a bus this old..... :'(
Title: Re: 8V71 air box blower
Post by: kyle4501 on July 23, 2010, 12:05:44 PM
Usually, the liquid mechanics don't do quality work anyways.    ;)
Title: Re: 8V71 air box blower
Post by: BJ on July 23, 2010, 12:14:21 PM
 ::)  ::)   no but they work cheap.................. ;D
Title: Re: 8V71 air box blower
Post by: buswarrior on July 23, 2010, 05:48:09 PM
The mess being blown around by the fans can be called rust proofing.

Call it a day?

happy coaching!
buswarrior
Title: Re: 8V71 air box blower
Post by: BJ on July 23, 2010, 06:54:45 PM
 ;D  ;D  ;D  buswarror     lol..............