---

ORIGINAL: Off_Road_Teacher

When I did mine I just had to twist it. The only thing that was really holding it in was the o-ring.

---

---

ORIGINAL: HankL

A common problem with the 1994+ Magnum water is the metal tube return line from the heater. In addition to it freezing in place due to corrosion, there is also a problem with corrosion making it nearly impossible to keep from leaking later after it has been re-inserted with a new o-ring even if the o-ring was properly lubricated prior to insertion.

You can try soaking the water pump in the cleaning product you can buy in supermarkets called 'CLR' which stands for Calcium, Lime and Rust cleaner.

I remember reading one post where a Ram owner fixed the leak after he replaced his Magnum water pump by coating the top of the metal tube where it inserts into the water pump with 'Plumber's Bronze' with a a glue like material filled with metal particles.

Another option is to replace the water pump with one from the 1992-1993 model year Magnum 5.2V8 which had back then a conventional screw in heater tube return line. See archived post below:
------

Posted by 96Ram2500 on *odgetrucks.org from Northern MN:

" I have researched the heater fitting issue and have found a replacement for
the press in tube with the o-ring. I work at a NAPA and mentioned this in
another thread a couple days ago, but I wanted to get good solid research in.

The water pumps on a early Magnum (92-93) have a threaded heater fitting and
are the same both in height of pulley and mounting pattern. They are also the
correct rotation on the impeller.

Here are some part numbers, whether you have a press on or bolt on pulley:

NAPA part#
58-447- bolt on pulley, threaded heater fitting

58-559-pressed on pulley, threaded heater fitting

I looked both of these pumps up for a 92-93 Dakota with a 318.
Both are rebuilts for about 50-60$.
Just thought I would satisfy some curiousity.
end of cross post

---

---

ORIGINAL: HankL

A common problem with the 1994+ Magnum water is the metal tube return line from the heater. In addition to it freezing in place due to corrosion, there is also a problem with corrosion making it nearly impossible to keep from leaking later after it has been re-inserted with a new o-ring even if the o-ring was properly lubricated prior to insertion.

You can try soaking the water pump in the cleaning product you can buy in supermarkets called 'CLR' which stands for Calcium, Lime and Rust cleaner.

I remember reading one post where a Ram owner fixed the leak after he replaced his Magnum water pump by coating the top of the metal tube where it inserts into the water pump with 'Plumber's Bronze' with a a glue like material filled with metal particles.

Another option is to replace the water pump with one from the 1992-1993 model year Magnum 5.2V8 which had back then a conventional screw in heater tube return line. See archived post below:
------

Posted by 96Ram2500 on *odgetrucks.org from Northern MN:

" I have researched the heater fitting issue and have found a replacement for
the press in tube with the o-ring. I work at a NAPA and mentioned this in
another thread a couple days ago, but I wanted to get good solid research in.

The water pumps on a early Magnum (92-93) have a threaded heater fitting and
are the same both in height of pulley and mounting pattern. They are also the
correct rotation on the impeller.

Here are some part numbers, whether you have a press on or bolt on pulley:

NAPA part#
58-447- bolt on pulley, threaded heater fitting

58-559-pressed on pulley, threaded heater fitting

I looked both of these pumps up for a 92-93 Dakota with a 318.
Both are rebuilts for about 50-60$.
Just thought I would satisfy some curiousity.
end of cross post

---