Fan Clutch Removal - How to get this thing off?

[modustollens]

I have been having problems with the radiator fan. I made a report about this here: http://www.nissanpatrol.com.au/forum...quealing-Noise!

It is now so loose that it is wobbling and making a terrible noise. So, I went to take it off last night.

I looked at the GQ manual I downloaded here, section 3-3. It seemed a simple procedure that my skill level out to have no problem with. But, I could not find the four nuts that retain the fan to the water pump - or, at the least, I was not sure what four nuts are being referred to and the image in the manual is too dark to see what I am supposed to be looking for. Here is an image of the manual's instructions:



Those four retaining bolts - where are they?

The only four bolts I could see are the four bolts of the fan belt pulley. Are these synonymous with the fan clutch retaining bolts? Must I remove the fan belt pulley to get the fan off? The manual says nothing of this and the picture above of what I was to be looking for is unclear. I am at a loss about how to get this thing off.

I can feel the bolts that retain the fan to the fan clutch assembly/temp-coupler (as seen in figure 4.7 on page 3-7 of the gq manual). Perhaps there is a different method for the 2.8 TD engine?

Looking at some other diagrams, for example this one:



It looks like there is a part between the temp-coupling or the metal assembly in the middle of the fan and the fan belt pulley - I cannot see anything on my machine that connects that metal temp-coupling to the pulley.

I was assuming that the fan would slip on the end of the shaft and to remove it one would unscrew something and pull it toward the radiator and off the shaft. But there does not seem to be anything removable on the front or radiator side of the fan. The fan assembly floats freely over the shaft back and forth about 1/2 inch.

It is possible too that the fan that is on there is not the original part.

Any advice would be welcome!

Thanks

MT

[Bloodyaussie]

Not hard mate. .. 4 x10mm nuts.

1380169313839.jpg

[Bloodyaussie]

And here
1380169410097.jpg

[modustollens]

Not hard mate. .. 4 x10mm nuts.

1380169313839.jpg

There is something odd with my machine for sure. My fan does not have that part with the four holes.

All I have is the plastic fan and the metal part that the plastic fan is mounted too. There is nothing connecting the fan to the pulley.

When the four bolts are removed, is the fan supposed to simply slide off the end of the shaft? I wonder why my fan would not slip off the end of the shaft when there is nothing connecting the fan to pulley or even to the shaft itself!

I'll snap a picture of what my looks like...

Thanks for that picture - that's exactly what I needed.

That second picture is even better! There is nothing like that on my machine at all.

This leads me wonder even more why the fan won't come off the shaft!

MT

[Wine_maker]

Hi modustollens!

Here the our RD28T scheme.



It is a little bit different from TD42 that Bloodyaussie posted.

The fun mounted using 4 nuts inside the fan.

[Bloodyaussie]

Looks the same to me......

[modustollens]

Thanks wine-maker.

I looked at the Russian diagram too for I have a copy of the redbook.

I marked the diagram to show the part that is missing on my machine:



That piece that joins the fan via the four bolts is definitely not there. So, I am at a loss as to how the fan is prevented from coming off the shaft.

After those four bolts are removed what must one normally do to remove the fan or does it just slide off the end of the shaft?

Both of those diagrams don't show a shaft at all that runs through the pulley...

Mt

Thanks,

MT

[Wine_maker]

After removing those four bolts the plastic fan will be disconnected from visco.
But how viscous mount on the pulley?
May be you can made a photo?

[modustollens]

Here's a couple of snaps form the phone:





I put a hose clamp on the shaft to stop the massive amount of vibrations - it works to reduce it by about 30 percent but it won't last and it loosens after a while. There is, as you can see, nothing on the fan for bolting or securing it to either the shaft or the pully/water pump assembly in front. I don't even see how the mounting bracket for the fan would attach to the fan.

You can see how the hole for the fan is way bigger than the shaft - it wobbles up and down and from left to right.

Any ideas?

MT

[Wine_maker]

Wow! It is something new, visco and pulley is not coincidence of centers.
I'm not sure is it original part from Nissan?
May be easiest way is to change the visco + pulley to original Nissan?
Also I think that after vibration the water pumps bearing will die soon.