January 4, 200620 yr I did my timing belt last week, also did the water pump and pulled off the oil pump. I lock-tightened the screws, replaced the crank seal, and put in the little o ring seal. Put it back in metal to metal with no rtv sealant. It is now leaking a bit from behind the pump, so I read through the factory service manual and they recommend using a sealer on the surfaces. (Should have read this first!) I was going to pull it back apart and put some sealant on it if that is what should be done? Also what type of sealant? Thanks
January 4, 200620 yr use anaerobic sealant, ask for it at the parts store, they'll know what it is if you don't. it's pricey but it's your oil pump, don't go cheap there. gasket makers will work but are sub-par for that application.
January 4, 200620 yr Author use anaerobic sealant, ask for it at the parts store, they'll know what it is if you don't. it's pricey but it's your oil pump, don't go cheap there. gasket makers will work but are sub-par for that application. Thanks, so do you think not using a sealant is causing my leak?
January 4, 200620 yr i'm almost positive. i just did my 97 OBS this summer and i think i used sealant on the oil pump. if the FSM shows sealant and you didn't use any then yes it's causing your issues. this shouldn't apply to you at all or any newer models, but just in case, be advised that reusing any formed gaskets/o-rings is a bad idea. i think (this is conjecture) that they can expand after use and taking it apart and reusing they won't fit too well. i've noticed on a few older soobs that the oil pump gaskets (which are o-ring material) don't seem to fit too well if attempted to reuse even if they are very new. they can leak, at the same time i don't think yours (the newer design) has this issue as it's just a straight o-ring, not a fitted one that goes in a designated groove like the old ones. but if it is, i'd replace it.
January 4, 200620 yr Use permatex ultra grey. It's what is recommended in the manual Here's a chart with sealant recommendations and equivalent sealants http://www.main.experiencetherave.com:8080/subaru/techinfo/subaru_sealants.gif
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