Jump to content

Air leak, fan clutch?


phoenix2013

Recommended Posts

Nasty air leak in the fan clutch. Open the hood, put hand just behind the fan, feel steady air stream. Empties tanks in five minutes, compressor , real trooper, keeps up with the front tank (and the rear tank), I'm assuming not for too long.

Any suggestion on how to fix it, or get it fixed and what to expect.

Link to comment
Share on other sites

Make sure it is actually the fan clutch before doing anything, the control line air fitting (and the line itself) have been known to leak from time to time.

 

If it is the fan clutch I would bite the bullet and install either a new one or a remanufactured unit(with warranty). You may be able to buy a rebuild kit but from my personal experience they don't last and won't have any warranty.

Link to comment
Share on other sites

There was an air leak in the line feeding the fan clutch (rubbing against the belt), I fixed it. The leak definitely comes from the fan assembly. Curious how involved the fix is, for instance, does the radiator need to come out to get at things. My experience with Volvo servicing is that ease of getting to things to repair/replace them was not high on their design criteria.

Link to comment
Share on other sites

If the air is leaking, most likely the bearings are going out. Check for wobble in the fan and FIX IT NOW. Spin the fan--can you hear the leak change as the fan spins? On my '97 WIA, it was just a matter of :

 

A: loosen the belt

B: CAREFULLY reach in and unbolt the fan. Wear glove to protect your knuckles from the radiator fins.

C: Gently set the fan forward into the shroud.

D: unhook the airline

E: remove the 4 bolts holding the belt pulley and fan clutch assm. and lift it out.

F: remove the clutch assm from the belt pulley assm.

 

About a 30 minute job each way-slow and easy. If you did not have adequate clearance to the radiator to get the fan bolts out--that could be a PITA. I chose to replace--it was just easier. And this was my work truck so its all off taxes!

 

I should note that (on mine at least) the bearings that hold the belt pulley are different than the fan clutch bearings. The belt pulley bearings were fine, I just replaced the clutch assm.

Link to comment
Share on other sites

Just rebuilt mine,

took more than 30 min to do mine, but could do another one in less time, the kit was about 350.00.

Make sure you remove the air line brass fitting before you put the unit in the vise, yes I broke mine.

instructions in kit will walk you through it, no problems..

 

Roger

Thanks Roger, that's the kind of "confidence builder" I needed. Is the kit Volvo / year specific, or also engine specific, I have Cummins N-14 in mine.

Link to comment
Share on other sites

Different clutches vary in complexity and ease of rebuild. It is such an important part and if it fails can do so much damage to the surrounding components and people i would not consider anything other that the OEM(vendor) remanufactured part. I just replaced the Horton clutch on the 12.7 Detroit in the Argosy last summer. It was possible to do without removing the radiator but had to be done quite carefully. the radiator can be damaged very easily.

Link to comment
Share on other sites

Just rebuilt mine,

took more than 30 min to do mine, but could do another one in less time, the kit was about 350.00.

Make sure you remove the air line brass fitting before you put the unit in the vise, yes I broke mine.

instructions in kit will walk you through it, no problems..

 

Roger

 

The cost of the rebuild kit has me surprised. I never would have thought it would cost that much. What would new cost ?

 

Al

Link to comment
Share on other sites

It is fan hub specific. Which is determined by year, make and engine model.

 

And then somebody changed it. I got the "right" clutch for my truck VIN...and it was completely wrong for the one that was on there. I finally did my own research, figured out what I had by specs, and then took that to the dealer. I would have had to change a bunch of stuff to put it back to original...besides the OEM clutch was twice the cost of the one I needed.

 

Phoenix...I remember finding some videos on Youtube showing the rebuild procedure for certain models. I don't think it would be hard. IIRC the thing that made me decide to go new was my clutch "V disk" was worn out as well. The cost of a new clutch disk and the rebuild kit wasn't a lot less than a whole rebuilt clutch.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Guest
This topic is now closed to further replies.
RVers Online University

campgroundviews.com

Our program provides accurate individual wheel weights for your RV, toad, and tow vehicle, and will help you trim the pounds if you need to.

RV Cable Grip

RV Cable Grip

All the water you need...No matter where you go

Country Thunder Iowa

Nomad Internet

Rv Share

Dish For My RV.

RV Air.

Find out more or sign up for Escapees RV'ers Bootcamp.

Advertise your product or service here.

The Rvers- Now Streaming

RVTravel.com Logo



×
×
  • Create New...