Guest Tishabet Posted August 16, 2008 Share Posted August 16, 2008 This is an embarrassing question, but I could not find an answer in my manual so I am asking here.I bought the correct weight/type of oil for my transmission and axle (yellow metal friendly!) and had no problem replacing the fluid in my transmission. However, when I got to the rear axle (which is encased in what appears to be about 1/2 inch of grime all around) I can only locate the drain plug. So my question is... where is the fill plug located? Did I miss its location buried under all of the grime or...?Thanks in advance! Link to comment Share on other sites More sharing options...
Guest Howard Purvis Posted August 17, 2008 Share Posted August 17, 2008 Hello Grant, Try removing the four lower bolts on the plate cover.Howard Link to comment Share on other sites More sharing options...
Guest Tishabet Posted August 18, 2008 Share Posted August 18, 2008 Maybe I'm more confused than I thought... on the cover of the differential facing the rear of the car I have a threaded port about 1/3 of the way up the cover... is that the _fill_ port? I was assuming it was the drain port and that you end up leaving some of the fluid in the diff when you refill it from another port higher up, but maybe that is actually where you fill it i.e. you only fill the differential 1/3 of the way full? Link to comment Share on other sites More sharing options...
Matt Harwood Posted August 18, 2008 Share Posted August 18, 2008 The '38 doesn't have a drain plug--the plug you're probably talking about is the fill plug. The only way to drain it is to remove the rear cover and let all that stinky oil drain out. As Howard points out, the best way is to loosen the lower bolts and let it drain out slowly. As long as you're in there, pull the cover off (make sure you have a new gasket), clean it up and inspect it, then seal and refill.The plug you found is the fill plug. Squirt the oil in there until it starts to leak out the plug opening, then button it up. The housing isn't filled 100%, only the 1/3 or so that you mention.Hope this helps. Link to comment Share on other sites More sharing options...
Guest Tishabet Posted August 18, 2008 Share Posted August 18, 2008 That makes everything clear... thanks for you help Matt and Howard! Link to comment Share on other sites More sharing options...
Mark Shaw Posted August 18, 2008 Share Posted August 18, 2008 One other method is to use a "slerp gun". It is just like a big syringe for removing and replacing fluids. I found one at a garage sale, and it sure saves wear & tear on gaskets. But, if you have not cleaned up & inspected the rear end, you should pull the rear cover anyway. Link to comment Share on other sites More sharing options...
serb Posted August 18, 2008 Share Posted August 18, 2008 Slurp Gun?What if you attached a rubber tube to a turkey baster if you can not locate a slurp gun?stevo Link to comment Share on other sites More sharing options...
Mark Shaw Posted August 18, 2008 Share Posted August 18, 2008 Stevo, The rubber bulb cannot produce enough suction to draw in viscous oils. My slurp gun looks more like a caulking gun with a hand grip to pull the plunger. Link to comment Share on other sites More sharing options...
serb Posted August 19, 2008 Share Posted August 19, 2008 That makes sense dealing with such a thick liquid.Stevo Link to comment Share on other sites More sharing options...
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