Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Display Modes
Old 01-02-2023, 11:27 AM   #1
Junior Member
Join Date: Nov 2022
Location: California
Posts: 8
Check your FlatPlate exchanger coolant lines

Not sure if there was any standard routing for the FlatPlate install on the SMB E series back in 2008, but if you have one of these, recommend checking the coolant hoses and lifting a bit if it was installed like mine.

Mine just finally rubbed through because it was apparently routed without any standoff from the steering linkage. (Van is new to me, so didn't get a chance to poke around that much yet). Enter catastrophic engine coolant leak in the field and very hard spot to splice at. Had to bypass the whole loop up above to get home, now trying to decide if I should bother replacing or just installing a propane heater instead. Love the efficiency of the hot water setup (it has the coolant circulating pump, so hot water long after shutdown), but it's a sketchy system in some respects; I am surprised this kind of modification didn't void Ford warranty back in the day..

Happy new year !

P.S. view is from above with open hood, driver side. Note how the two hoses cross (and in my case, rested on) the steering u joint. Hole was of course invisible, on the bottom of the lower hose.
Attached Thumbnails

mkosina is offline   Reply With Quote
Old 01-20-2023, 06:30 AM   #2
Junior Member
Join Date: Dec 2012
Posts: 18
SMB also had a sub-optimal design for the flat plate heat exchanger on my MB chassis. They used a plastic "T" where they tapped into the factory coolant line. Although this fitting did not seem to be under stress, after the second one failed I switched to a metal fitting. Yes, dumping coolant on the ground and roadside repair are stress inducing events.

maurshir is offline   Reply With Quote
Old 01-21-2023, 01:42 PM   #3
Senior Member
Jeffrey's Avatar
Join Date: Apr 2007
Location: Santa Barbara, CA
Posts: 1,831
My long flat plate coolant hose also wore thru by rubbing against the sharp edges of the steering box casting. When I replaced that hose, I sheathed it in flex aluminum tubing and re-routed it a bit. I ran the sheath everywhere I thought another incident might occur.

I also replaced all the shorter hoses and clamps as they started to leak. Eventually I replaced the flat plate itself, and used new brass fittings and elbows.
'07 RB-50 - My Photo Site -- K1JGS --
Jeffrey is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 01:42 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2023, vBulletin Solutions, Inc.