Re: Water Pump and A/C Idler bearings

[srubano@xxxx]

I used Hylomar gasket dressing on the back of my water pump housing. 
Make sure you replace the paper gasket as this sealant is only a 
dressing for it, it's not to be used without some sort of gasket. The 
Hylomar sealant can be found at any Pep Boys. It says that one of the 
uses for it is water pump applications. Great stuff, it doesn't 
harden and it allows for easy disassembly in the future since it 
doesn't dry.

As for the A/C idler pulleys, you will need to remove the pulley's 
with the bracket they are mounted onto off the engine. Next remove 
the bolts on the back of the pulley that are attaching the 
pulley/mounting stud to the bracket and knock the stud out of the 
center of the pulleys. Clean out the center of each pulley (where the 
stud was) with some brake cleaner and you will see that there is an 
internal "C" clip holding the bearing in. You will need a pair of C 
clip pliers to remove them. Each pulley has two of them, one on the 
front and one on the rear, remove them both. You will need the press 
the bearings out. What I did was I placed the pulley flat down onto 
an open vise, the vice was opened enough to allow the bearing to fall 
through. Don't clamp the pulley into the vice, just place it on top 
of the partially open jaws, like I said only open them enough for the 
bearing to pass through. I then placed a socket the same diameter as 
the bearing into the center of the pulley, resting on the bearing. 
Gently strike it with a hammer a few times and the bearing should 
come loose and come out. To install the new ones, Install one of the 
C clips into the pulley. At the other open end place the bearing into 
it and place the same socket you used to remove the old bearing on 
top of the new one. Again, make sure it's the same diameter, if it's 
smaller it may damage the bearing. It should sit on the outer metal 
portion of the bearing and it should also fit into the hole in the 
pulley. Give it a couple of gentle strikes until the bearing bottoms 
out on the C clip you installed previously. Install the other C clip 
and assemble it back onto the brackets and engine. Also be sure you 
replace the "O" ring seal.

Steve


--- In dmcnews@xxxx, "Jim Reeve" <ultra@xxxx> wrote:
> Does anyone here know if I need some kind of sealant on the large 
> gasket for the back cover or the water pump?
> 
> I am also attempting to replace the bearings in the AC idler (one 
has 
> almosted seiezed up!). But I am unsure exactly how I'm supposed to 
be 
> doing this. (I have the belt and bearying kit from PJ Grady).
> 
> Any help will be greatly appreciated.
> 
> Jim Reeve
> MNDMC - Minnesota DeLorean Club
> DMC-6960