Diesel_Power_2

Hello,

I am trying to remove the fan and the clutch and bought the big 36 mm wrench too but when I try to loosen it the whole fan skips with it. I know it is a LH thread. How to hold the fan? Should I jam something between the fan and block?
Thanks for any advice everyone.

patdaly

Try using a large brass drift and giving it a good smack with a hammer in the correct direction to loosen. That should give you the advantage needed to loosen it.

Tate

You want to hold the pulley when you try to loosen it, not the fan. Fan just free wheels on the clutch, the clutch is threaded onto the pulley.

infidel

Here's what I use but a pair of large Channel Locs will work also.
Even with the tools the first thing I do is give the nut a good whack on the right hand side of the nut flat with a hand sledge and long drift.
Don't be shy, hit it hard.

Diesel_Power_2

Thanks alot for the ideas. I tried to hold the fan and thought I got it but the fan is/was just slipping. I also tried to hit it with a punch still no-go, then read hitting it may damage the Hub. I need to hold the pulley for sure and saw via google someone used a chain grip to hold it and will look for one or possibly make one to try it.
Thanks again everyone.

Purplezr2

I use channelocks and a pipe wrench, its never fun and I always loose some skin.

chevummins

I removed my fan to do the injector pump on my truck. Instead of fighting that mess, I removed the 4 bolts holding the cast mount for the fan to the engine block. There are 4 10mm head bolts holding it in place. One is behind the pulley, so you have to remove the bolts holding the pulley to the clutch hub. When you lift the fan, clutch and base as an assembly, it is heavy and I had to get my wife to help me fish out the fan shroud and fan assembly at the same time. I don't know if this helps or not, but thought I would share.
-Greg

98fargo

If you have access to an air hammer it makes quick work of loosening it

Diesel_Power_2

Thanks everyone for the ideas. I may take it to a local shop as they said 15 min. to do it but then they will overcharge the new clutch so first I will try to strap wrench the thing.
cheers oao

Diesel_Power_2

Update --- Got it with the Big Channel Pliers.

Tate

You can unbolt the long bolt without removing/loosening the pulley bolts. Just use a 10mm combo wrench to back it out, then loosen the other 3 bolts, work them out evenly. Saves me time, I hate fiddling with those 6 little bolts on the pulley.

Curious how removing the fan helps in the removal of the injection pump?

chevummins

quote:Curious how removing the fan helps in the removal of the injection pump?

Tate:
I pulled the radiator to make the job easier. I timed it with an indicator and everything. The big gear puller was much easier to get in there anyways. You have to remove the fan to get the fan shroud out without cutting it, a few bolts and the radiator will come out too. I remember thinking how grateful I was that it was out as I wrestled with everything else. Please inform me if there are easier ways.

Tate

A little steering wheel puller pops the gear off, and has enough room between the blades.

98fargo

I use a harmonic balancer puller, but same thing, don't have to remove the fan

Rockyhud

I know this is a relatively old thread but since I had recent experience with the topic I thought I'd throw in my 2 cents, for what it's worth.

My truck's radiator recently developed a leak along the core plate that attaches to the intake side tank. Due to the tank material being plastic it basically means the radiator is a one-use item and had to be replaced.

The toughest part of the repair was removing the fan. Even though I had done this back around 2003 when I took care of the KDP I had forgotten how held the fan pulley still while loosening the fan nut. I tried the usual "stick a screwdriver between the pulley bolt heads" method but that didn't work, at all. I even tried working a crowbar into the area but to no avail.

So, I did a search on DTR and found this and a few other threads with advise. One poster used a Blue Point Chain Wrench and said it worked well. I couldn't find one locally so I checked with my local O'Reilly and Autozone stores for a chain wrench. Autozone had one that's basically like a set of Vice-Grips with a 19" chain that wraps around the object to be held stationary and hooks in the upper handle. You get the chain close to size needed than use the adjustment screw to get it where you can close the pliers and hold tight.

I clamped the tool firmly, then using 36mm fan nut wrench to turn the engine over a little, I rotated the chain wrench around so it rested against the crankshaft pulley. That way I didn't have to hold on while wrenching with other. I then tried working just the fan nut wrench to loosen the nut but wasn't able to - the nut was really on tight. I then attached an 18" long 1/2" drive breaker bar to the end of the fan wrench, using the square hole there for that purpose, and was able to break it loose and remove the fan.

During this time the chain wrench didn't slip even the slightest. Needless to say I was very glad I'd bought this tool and that it had worked so well. BTW, where I bought it (Autozone), it only cost $19.95. Well worth it for what it was able to do.

So, I hope this, along with all the other postings of advise for making this task not as bad, will help someone else who's about to tackle this job.