Breakdown Information
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This was a tough, expensive lesson to learn and fits the opportunity to learn in this post...........
Driveline (Engine, Transmission): Cummins ISX 525HP, Allison 6 speed
Miles: 65K
Year: 2003
Break Down Description: Road debris was deflected off the rear tires towards the radiator and was deflected into the radiator by the rotating cooling fans.
Symptoms: Coolant release (steam), as seen in the driver's side mirror
Effect: Overheated engine, shutdown on mountain summit.
Cause: Punctured radiator core.
New rad: $6K
Removal and Replacement: $2K
Breakdown rescue/tow: $1K
Additional travel costs & unplanned expenses: $2K
$11 thousand dollars later, because a piece of tire rubber from the road deflected up off the road and hit the cooling fan………and was unfortunately deflected into the rad.
Solution: Install expanded sheet metal covers over the fans. Engine cooling isn't compromised and the radiator is fully protected. IMHO this problem is particularly significant for those coaches with tag axels. Single axle coaches don’t have the same open chamber where the deflection and damage can occur.
Outcome: Serious, expensive Lesson Learned. I’m told by the rad and service shops......this is a common mode of failure for many coach owners...Malcolm
Driveline (Engine, Transmission): Cummins ISX 525HP, Allison 6 speed
Miles: 65K
Year: 2003
Break Down Description: Road debris was deflected off the rear tires towards the radiator and was deflected into the radiator by the rotating cooling fans.
Symptoms: Coolant release (steam), as seen in the driver's side mirror
Effect: Overheated engine, shutdown on mountain summit.
Cause: Punctured radiator core.
New rad: $6K
Removal and Replacement: $2K
Breakdown rescue/tow: $1K
Additional travel costs & unplanned expenses: $2K
$11 thousand dollars later, because a piece of tire rubber from the road deflected up off the road and hit the cooling fan………and was unfortunately deflected into the rad.
Solution: Install expanded sheet metal covers over the fans. Engine cooling isn't compromised and the radiator is fully protected. IMHO this problem is particularly significant for those coaches with tag axels. Single axle coaches don’t have the same open chamber where the deflection and damage can occur.
Outcome: Serious, expensive Lesson Learned. I’m told by the rad and service shops......this is a common mode of failure for many coach owners...Malcolm
