I am the person who championed the Mercedes Benz fan clutch improvement and
am posting this reply to both the following threads:
“Anyone install the Mercedes Benz Fan electrically controlled fan clutch…”
“Cooling Timing in keeping your engine cooled better”
We CHANGE many items on our coaches to yield a better Vintage RV
experience.
CHANGE can be “FICKLE”……….you can get the out come you want and some
additional unwanted outcomes.
Just to be clear, I came from a back round in Automotive Quality Assurance
and Bearing Quality Assurance. So I Don’t take Change lightly.
On the issue of Water pump reliability OEM, water pumps used on BOC
platforms (Buick, Olds, Cadillac) employed a ¾” shaft Ball/Ball
configuration and were the most robust in GM line. The BOC water pumps had
longest stick out from the face of the block, a whopping 6 inches. GM
packaged the largest cost effective bearings at the time in those designs,
the 3/4” shaft Ball/Ball design. Most others, including Chevrolet, used a
5/8” shaft and smaller rolling elements, Balls.
While working with Mercedes Benz Fans and trying to keep un wanted “FICKLE”
outcomes to bite us. I started investigating Bearings and todays
technologies. The period that these pumps were manufactured…… only
BALL/BALL ¾ “ were generally available……….I discovered that is no longer
true. Ball/Roller Bearings are now common but not always employed by
rebuilders due to cost.
CARDONE produces new Casting pumps for our 455/403 engines and has upgraded
to the more robust load carrying Ball/Roller *Bearing Design*
*CARDONE SELECT #5521118H………………just do it! *
*ALSO, It is a common practice at most good repair facilities to replace
thermostat, water pump and fan clutch if any are found to be defective or
timed out due to miles or age. JUST DO IT!*
--
Regards,
Tom Pryor
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186
Living on a waterfront is not a matter of life or death. Its more
important than that.
am posting this reply to both the following threads:
“Anyone install the Mercedes Benz Fan electrically controlled fan clutch…”
“Cooling Timing in keeping your engine cooled better”
We CHANGE many items on our coaches to yield a better Vintage RV
experience.
CHANGE can be “FICKLE”……….you can get the out come you want and some
additional unwanted outcomes.
Just to be clear, I came from a back round in Automotive Quality Assurance
and Bearing Quality Assurance. So I Don’t take Change lightly.
On the issue of Water pump reliability OEM, water pumps used on BOC
platforms (Buick, Olds, Cadillac) employed a ¾” shaft Ball/Ball
configuration and were the most robust in GM line. The BOC water pumps had
longest stick out from the face of the block, a whopping 6 inches. GM
packaged the largest cost effective bearings at the time in those designs,
the 3/4” shaft Ball/Ball design. Most others, including Chevrolet, used a
5/8” shaft and smaller rolling elements, Balls.
While working with Mercedes Benz Fans and trying to keep un wanted “FICKLE”
outcomes to bite us. I started investigating Bearings and todays
technologies. The period that these pumps were manufactured…… only
BALL/BALL ¾ “ were generally available……….I discovered that is no longer
true. Ball/Roller Bearings are now common but not always employed by
rebuilders due to cost.
CARDONE produces new Casting pumps for our 455/403 engines and has upgraded
to the more robust load carrying Ball/Roller *Bearing Design*
*CARDONE SELECT #5521118H………………just do it! *
*ALSO, It is a common practice at most good repair facilities to replace
thermostat, water pump and fan clutch if any are found to be defective or
timed out due to miles or age. JUST DO IT!*
--
Regards,
Tom Pryor
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186
Living on a waterfront is not a matter of life or death. Its more
important than that.
