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hwellens

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Posts posted by hwellens

  1. If the new pump is not pumping at high speed, the flow must be restricted or the pressure is low. I would check the pressure first when the engine is idling. Pressure should be around 3-4 PSI. If it is lower, the diaphram is weak and needs to be changed. If the gas over there has alcohol in it, it will damage old type diaphrams. If the pressure is ok then the flow must be restricted. The pump has a fine screen in it and may have gotten some dirt in it. You have to take the pump apart to look at the screen. The only other problem, but unlikely, would be the cam lobe that drives the pump is worn or the fuel pump arm got bent when you installed it.

  2. According to Hollander interchange the 28-30 Sr, DA, and DB are the same. Also, 27-28 Dodges are the same. This is the carrier assembly only (3rd member).

    The 30-31, 3/4 ton 120" wheelbase Dodge truck, Dodge Graham 27-28 1/2 ton, are the same.

    The 1930 DD is different; even the ring and pinion are different.

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