I received an email from Ed, a former BAC member who had been working with an engineer at Rocore (the manufacturer of the transmission cooler that is in the lower radiator hose on many Beavers) to develop a floating bundle cooler to stop the thermal fatigue failures that some Beaver coach owners have experienced, and discussed in depth on this forum. Here is the information.
As mentioned, Rocore now has a floating bundle transmission oil cooler to replace our PN 3-1249T used on various motorhome applications, including Beaver. Many OE’s are changing to the floating bundle design, as it virtually eliminates the potential for thermal fatigue in the tube bundle that results in a fluid mix and damage to the clutch friction material in automatic transmissions. And, the Viton O-ring seals on each end of the tube bundle reduce the resident vibration loading, thus extending service life of the floating bundle coolers.
Our new PN is 5-7063H (drawing attached). Current end user price for the old PN 3-1249T is $1,102, FOB Burkesville, KY 42717. Drawings are attached for comparison.
Current end user price for the new floating bundle design PN 5-7063H is $988.00, FOB Burkesville, KY. A $30.00 fee would apply for all major credit card payments.
Current lead time is about 2 weeks ARO for PN 5-7063H. Also attached is a drawing for typical mounting brackets with referenced McMaster-Carr PN.
If you have a problem opening these files, let me know and I can email them to you.