ISC 330 exhaust gasket

[mojoman]

Hi,

I have a 2005 Newmar with 65k miles on a ISC 330 rear radiator on a Spartan chassis. Recently developed a exhaust gasket leak on #3 cylinder (from radiator end). Any recommendations on a reliable shop in Minnesota? I’ll do it myself if there are no better options ..... but I’d rather not.

Thanks, Gary

[Cincy Steve]

Where’s the nearest Cummins shop?

[Ray,IN]

A local HDT repair shop replaced my broken manifold and gasket. The ISC engine is known for broken/cracked exhaust manifolds because it supports the entire weight of the turbocharger and exhaust piping.. The Cummins replacement manifolds are cast heavier and stronger to withstand the weight of the turbocharger and associated piping.
During the removal process 4 of the 12 manifold bolts broke off despite my soaking them with penetrant every day for 2 weeks prior to the appt.


If I may I will offer you a tip, prior to the appt. completely remove the bed frame and anything else that would restrict engine access.
Put carpet protector on any carpeting (I even covered the tile floor) as the mechanics will be in/out of your MH many times during the process.