Water Pump Replacement HT4100 Cadillac, Advice?

[Nehmo]

My next auto repair job is to replace the water pump on an '86 De
ville Cadillac with an HT4100 engine.
I've done a few water pumps on conventional V8 engines, but this will
be my first on a transverse.
This page is helpful: http://www.cadillacforums.com/forums/ht4100-4-1-4-5-4/94998-just-finished-my-4-9-water.html
And I know I'm going to need some torx wrenches and regular metric.
Does anybody have any tips?
--
(||) Nehmo (||)

[p***@webtv.net]

Water Pump Replacement HT4100
Cadillac, Advice?

It's just taking stuff that is in the way, out of the way and then
putting it all back. Not too bad a job....

You can get a Shop Manual for your year model at Helminc dot com. $75.
The Service Information Manual covers everything from the top of the
roof to the bottom of the tires and most all systems in between. Money
well spent and will quickly pay for itself. Helm is the publisher for
most manufacturer shop manuals.

Dave S(Texas)

[Nehmo]

Post by p***@webtv.net

Water Pump Replacement HT4100
Cadillac, Advice?

It's just taking stuff that is in the way, out of the way and then
putting it all back. Not too bad a job....
You can get a Shop Manual for your year model at Helminc dot com. $75.
The Service Information Manual covers everything from the top of the
roof to the bottom of the tires and most all systems in between. Money
well spent and will quickly pay for itself. Helm is the publisher for
most manufacturer shop manuals.
Dave S(Texas)

It's not my car, so I can't justify the cost of a manual. If I could
find one to look at, I certainly would.
One post I read, which wasn't really clear, said something about a
pulley being in the way of a bolt and that was a problem.
Have you actually done the water pump replacement on this particular
engine?

--
Nehmo

[p***@webtv.net]

Post by Nehmo
Have you actually done the water pump
replacement on this particular engine?

No, I have not.

[s***@gmail.com]

Post by p***@webtv.net

Water Pump Replacement HT4100
Cadillac, Advice?

It's just taking stuff that is in the way, out of the way and then
putting it all back. Not too bad a job....
You can get a Shop Manual for your year model at Helminc dot com. $75.
The Service Information Manual covers everything from the top of the
roof to the bottom of the tires and most all systems in between. Money
well spent and will quickly pay for itself. Helm is the publisher for
most manufacturer shop manuals.
Dave S(Texas)

Ebay sells the sevice manauls for the exact car and make for 20 plus
shipping check it out

[Steve]

Post by Nehmo
My next auto repair job is to replace the water pump on an '86 De
ville Cadillac with an HT4100 engine.
I've done a few water pumps on conventional V8 engines, but this will
be my first on a transverse.
This page is helpful: http://www.cadillacforums.com/forums/ht4100-4-1-4-5-4/94998-just-finished-my-4-9-water.html
And I know I'm going to need some torx wrenches and regular metric.
Does anybody have any tips?
--
(||) Nehmo (||)

I still have nightmares, cold sweats, and and an eye twitch from the
last time I replaced an HT4100 water pump. And that was on a REAR-drive
Cadillac (94 Coupe de Vile... mis-spelling intentional) over 10 years
ago. I can't imagine how over-complicated GM might have made it on a
transverse version. Or maybe its easier, NOTHING is intuitive with 80s
GM products.

But patience and a GOOD service manual are the keys to success. You had
to do some nutty stuff that you wouldn't normally expect on the
rear-drive version (my favorite example: removing the power-steering
pump pulley from the pump shaft with a puller in order to gain access
to a pair of water pump bolts behind the pulley- which wouldn't have
been necessary if GM had just used a spoked pulley instead of a solid
disc pulley!) But its all spelled out in the manual so that if you
follow the procedure, you'll get it done.