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Farm Machinery
Classic Machinery
Vapormatic gasket kits and other problems
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<blockquote data-quote="John 1594" data-source="post: 262027" data-attributes="member: 23"><p>well.....had sump off this morning, oil pump off and on the bench to compare with the old one</p><p></p><p>the relief valve on the old pump simply dropped out on the bench when the securing pin and spring was removed</p><p></p><p>no such luck with the new one, banged it on the bench a few times, it eventually came out after a couple of attemts with the pliers, it seems to slide free in one position, but half a turn and you can feel it bind at the very bottom of its bore</p><p></p><p>so, old pump fitted to the engine, sump on and a pressure gauge on the oil gallery, 55psi on cold idle, rising to no more than 62-63 at full revs</p><p></p><p>obviously the tolerances of this new pump are a bit on the tight side, my guess is when the oil gets hot the expansion between the metal valve and the cast body is enough to nip it in its bore</p><p></p><p>on start up a peculiar knock has came up, ran fine yesterday, isolated it to no1 injector, when cracked off the knock went, moved it to number 2, same thing. So thats got to be sorted as well now</p></blockquote><p></p>
[QUOTE="John 1594, post: 262027, member: 23"] well.....had sump off this morning, oil pump off and on the bench to compare with the old one the relief valve on the old pump simply dropped out on the bench when the securing pin and spring was removed no such luck with the new one, banged it on the bench a few times, it eventually came out after a couple of attemts with the pliers, it seems to slide free in one position, but half a turn and you can feel it bind at the very bottom of its bore so, old pump fitted to the engine, sump on and a pressure gauge on the oil gallery, 55psi on cold idle, rising to no more than 62-63 at full revs obviously the tolerances of this new pump are a bit on the tight side, my guess is when the oil gets hot the expansion between the metal valve and the cast body is enough to nip it in its bore on start up a peculiar knock has came up, ran fine yesterday, isolated it to no1 injector, when cracked off the knock went, moved it to number 2, same thing. So thats got to be sorted as well now [/QUOTE]
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Farm Machinery
Classic Machinery
Vapormatic gasket kits and other problems
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