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[Deleted User]
[Deleted User]
edited November -1 in HUDSON
As I am under the 308 engine in my 52 Hornet there is a plate attched to the block by 5 bolts just below the exhaust manifold. I am leaking oil at that spot and am assuming I need a new gasket. What part of the engine is this called?

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  • Nevada Hudson
    Nevada Hudson Senior Contributor
    The distributor drive gear.
  • [Deleted User]
    [Deleted User]
    The plate is a cover for the bottom of the oil pump. The oil pump has a drive gear on the end opposite of the plate. The gear interacts with the cam shaft and in turn pumps oil. the gear has a cavity in it's top that accepts the distributor shaft. So, when the engine turns the ignition timing is maintained. While you did not ask for all this added information, you now know some of the consequences of pulling that plate and letting the oil pump slide out! Actually those five screws could be loose. Use small ratchet with the proper socket or an open end wrench and check them.



    Good luck
  • Nevada Hudson
    Nevada Hudson Senior Contributor
    I meant the oil pump drive gear! Sorry! Thanks Ken!
  • [Deleted User]
    [Deleted User]
    Now I have to take this plate covering the oil pump off. What do I need to look for and be careful of? Will the pump indeed fall out?
  • [Deleted User]
    [Deleted User]
    Most of the time the oil pump will have enough friction created by the interaction with the cam gear that the internal elements will not fall out. BUT>>>> the moving parts of the pump can fall out... so... when you remove the cover bolts make sure you are prepared to drop the cover just a 1/2 inch or so and if the internal parts of the pump are dropping too push them back up into the pump.



    You can create a make shift piece to keep the pump parts in place using a tin can lid. Punch a hole in the edge of the can lid that will allow you to replace one of the bolts after the oil pump cover is removed. The tin can lid can be placed on top of the cover plate as you drop it... then insert one bolt ... clean the gasket from the cover and pump flange, reverse the process.



    Probably should mention the can lid may have sharp edges ... so be careful... my history includes cut fingers for not remembering this bit of truth...



    Good Luck... Takes longer to type this than the task to replace the gasket.
  • Uncle Josh
    Uncle Josh Senior Contributor
    Assuming the pump is pumping correctly.



    There are 2 small bolts, and 3 large bolts. The large bolts hold the pump housing to the block. The small ones hold the cover on. The cover has a groove in it with either a cork gasket or an O-ring in it.



    Remove one of the small cover bolts, and loosen the other one. Remove the 3 large bolts but hold the housing tight to the block. Rotate the cover to expose one of the large bolt holes and rethread the bolt in so it holds the housing to the block. Rotate the cover furthur to allow the rotor to come out. Make sure you keep it clean albeit oily.



    Then take the other cover bolt off, and remove the cover. Clean the cover good and insert a new gasket from Dale Cooper PN 4292 for $3



    http://www.hudsonmotorcarco.com



    Reverse the above procedure to re-assemble.



    If you let the gear come out of mesh with the camshaft, you'll have to follow the procedure in the shop service manual to make sure you get it back in and in time correctly.



    There is also a procedure to inspect and replace the pump parts, but for normal driving you shouldn't need to.
  • Uncle Josh
    Uncle Josh Senior Contributor
    Oops, Guess Ken and I were responding at about the same time. Well, now you have 2 ways to do it with the same basic idea. Great minds etc...
  • [Deleted User]
    [Deleted User]
    Thanks to both. The reason I have to replace the gasket now is that when I tried to tighten the bolts, one of the smaller ones snapped off. I now have to get the remaining part of the bolt out of the block. I am hoping by dropping the cover I can get enough of a grip on the stud to get it out. Any thoughts on this next phase would be appreciated.
  • Unknown
    Unknown
    use a 1/8 r/h drill bit and drill a short distance. Get a 1/4 left hand drill bit, slow your drill down to a crawl and the l/h bit should pull the broken bolt right out of the block before you have to remove anything.
  • [Deleted User]
    [Deleted User]
    or get an "easy out" stud extractor set from your local industrial supply. saved many an a#$
  • Unknown
    Unknown
    first thing I would try is a slightly oversized nut...put it over the broken stud and weld them together then you have the advantage of more leverage on the piece as well as the heat should help to loosen the broken bolt.
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