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Hi..I'm replacing the seal in an NG series Monarch pump, coupled to a 4-cylinder Wisconsin engine. I can't get the pump casing apart, is this from rust or something I've missed?? All the bolts are removed. Thank you..Russ

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All the bolts are removed.... Put a kerosene/WD 40 around the pump lids, and let it stay for day. After a day, use a hardwood hammer to take it off. Let us know by e-mail for the results as well as for further assistance.

Posted on Oct 27, 2009


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1982 240 volvo


Your engine does NOT have a carburator. Unless the engine was replaced by an earlier one, 1982 Volvo's were fuel injected.

This is an older fuel injection design that is a "constant flow" type system ie. there is a constant spray of fuel while the engine is running. Newer fuel injection systems, including Volvo, are "demand" type systems where fuel is only sprayed through the injectors when the engine electronics signal it to do so.

In any case, this older system is very sensitive to vacuum leaks. Check all your hoses for splits, hardening or connection looseness. Check the seals on each fuel injector (there are 4, one for each cylinder). If they are hard or cracked, replace them.

The later problem was the case on my 1981 240 which had the same problem. New fuels injector seals and the car runs perfect.

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