How to remove viscous coupling from water pump

[procrastination inc]

Any tricks or tips?

[camel_landy]

This is one of those occasions where the proper tool really helps!!!

Failing that, you can do it by striking the nut with a punch to try & spin it off but that will usually end up damaging it.

M

[Blknight.aus]

use a square shanked flat head screw drive to jam between the pully bolts and the back of the boss, grab a shifter (or the right size spanner if you happen to have it) put the shifter on and give it alternating whacks with a rubber mallet...

5-6 swings will see it free and having a second person to hold the screwdriver (or the shifter if you dont like them much) helps and in a pinch, if you dont value the fanbelt much you can cinch tie 2 runs of it together tight up onto one of the pullys to hold it all firm.

yes half of your swings will be in the direction of do up but as you're only hitting it softly you wont do any damage and it should pop off after the second swing in the direction of undo. Once its cracked it should just about be finger tight the whole way, before you do it up put some anti sieze on the threads.

Usually undo is in the direction of engine rotation when viewed from the front.

[mark2]

The tool can be had from REPCO for about $35. Ask for a Ford fan hub spanner. It makes it a LOT easier.

[p38arover]

Usually undo is in the direction of engine rotation when viewed from the front.

An easy way to remember the direction of hitting (and this applies to serpentine or v-belts which, on LRs, are different directions) is to loosen in tha same direction in which the fan rotates.

Leave the fan belt and tensioner all in place until you've loosened it. I find I don't need anything special, the belt tension is enough to hold the pulley when I hit the spanner. I use my big shifter.

Don't Loctite the thing back on. Someone did that on my previous RR. :(

[Charlie]

In amplification of the 'undo' direction, it is a left hand thread.

[p38arover]

In amplification of the 'undo' direction, it is a left hand thread.

Not necessarily. Procrastination hasn't specified the vehicle nor whether it is serpentine or V-belt.

One uses LH, the other RH threads.

[hodgey4]

Thanks Guys, Just about to tackle the water pump on my D1 I hope your tips work out.

[loanrangie]

I made a spanner from some 4mm steel i had lying around and now keep it in the toolbox just in case.

[superquag]

... I bought the wrong sized water-pump spanner 'cos it was only $10 on 'Special'.- Lashed out on a quality file and enlarged the jaws to suit.

- Bargain !

:angel:

[Tank]

BTW the Viscous Fan is on the timing cover, not the water pump, do you need to remove the fan to get the water pump off, can't remember, that is if it's a 300TDi, Regards Frank.

[loanrangie]

BTW the Viscous Fan is on the timing cover, not the water pump, do you need to remove the fan to get the water pump off, can't remember, that is if it's a 300TDi, Regards Frank.

No you dont but if you need room to swing its easier to remove it and save the risk of breaking blades.