Engine Specific Info and Questions > IDI Engine
Water pump pulley
Spokerider:
Guys,
I'm in the process of doing a timing belt re and re on a 1992 1.6TD
The 3 water pump pulley allen head bolts are tight, tight.
How do you guys hold the pulley still, so torque can be applied to the bolts to loosen them.
I have a strap wrench, but it still allows enough movement of the pulley that robs the torque needed to jolt the bolts loose.
This water pump has a "nose" on it, so I can't use a flat bar across the other two bolt heads like I've done to the "noseless" water pumps, to hold it still.
Hummmm..... vise grips on the nose?
I tried an electric impact tool to try to loosen one of them......but my allen head socket is not an impact-specific tool.....I'm afraid of breaking it, my only one. Also, 10 seconds of attempt with the impact tool did not loosen the one bolt I tried it on, and the bolt head hole is a tad loose with the allen socket now.
The bolts are soaking with Moovit right now, as i type......
libbydiesel:
I used to jam screwdrivers, clamp belts, etc... A while back, after breaking more than one screwdriver and being irritated by that drama, I spent 1/2 hour with a cutoff wheel and my welder and made a tool from things I had on hand, most notably a bit of 1/2" steel tubing and spare el cheapo socket. If the allen ever strips you can pound in the triple-square that fits the CV bolts.
Spokerider:
Thanks for the pic libby, and the advice on the triple square for rounded out allen bolts.
I did get it off........bent a piece of metal and jammed it in behind the pulley.....levering it off the PS pump. That held it still enough to snap them loose.
I was thinking of using a flat bar.....sat 1/8th x 3" wide or so..... and drilling out / removing a "triangle " of steel in the center, to match the triangle of the pulley bolt pattern.
I should make sumpthin for the next time!
libbydiesel:
After posting the pic of my homemade tool I did a search and some versions are available for fairly cheap. This one looks like it would work for the smaller hub. I've never used it personally, though, so I'm not sure.
https://www.ebay.com/itm/AUTO-AIR-CONDITIONER-WATER-PUMP-PULLEY-SPANNER-LOCKING-WRENCH-TOOL-4-VW-AUDI-VAG/192863627899?hash=item2ce7916a7b:g:-fkAAOSwgPVckU76&frcectupt=true
Spokerider:
That's what I was thinking of. I could make my version in an hour or so. Will prolly do when i have the time.
Also.....have you found using a crank sprocket holder / tool of sorts helps with installing a new timing belt. It would keep the crank from turning during the process. I usually end up keeping the timing marks advanced by 1/4" or so......so when the crank does turn [ inevitably ] when struggling to get the belt on, it's of some help in getting the timing marks bang-on once the belt is in place. Even at that.......it takes me many attempts to get it right.
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