Newell used Page and Page air ride systems in the 1970s, so we probably installed the suspension. Chances are the axle and the generator are also original equipment, but confirming this would be difficult. We don't have access the specifications of the rear axle. The two major variables are the power and torque capacity and the match of the ratio to the engine. If the coach has adequate acceleration and cruising speed, the ratio is probably okay. Confirming the power capacity is trickier. If inadequate, you'll probably break a ring gear sooner or later. But the fact that it apparently has run for many years is a very good sign. We wouldn't suggest doing anything about the rear axle torque capacity unless and until it breaks because there is a good chance it won't.
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