Pilot bearing seal help
#1
Pilot bearing seal help
I'm putting in a rebuild and the seller advised me I would need to put a pilot bearing seal in. The engine is an s4 block with s5 rotors and TII housings, and it has an s5 flywheel on it.
I've checked the FSM for 86-88 and about as descriptive as it gets is "install pilot bearing seal."
The 89-91 FSM doesn't even mention the pilot bearing seal. Only mentions the pilot bearing and says do not remove unless you need to replace.
The problem: I've gone through two pilot bearing seals because I cannot get it to seat against the pilot bearing as the haynes manual states and compared to how my bad engine's (s4) shaft looks. There is an inner lip on the shaft which I can't seem to get the seal to pass. The seal has an outer metal encasing which gets damaged completely if you try to get it passed this lip.
At first glance it looked like the lip was damaged from removal of the old seal. I took a grinder to it and smoothed it out a bit, but the second seal I tried still wont pass it.
I'm beginning to think that this seal doesn't need to meet the pilot bearing as it does on my bad engine. It just doesn't fit. If anyone has any experience with installing this seal please help. I have one seal left and I don't want to have to order anymore from mazdatrix and wait to put this engine in any longer.
Thanks,
RB
I've checked the FSM for 86-88 and about as descriptive as it gets is "install pilot bearing seal."
The 89-91 FSM doesn't even mention the pilot bearing seal. Only mentions the pilot bearing and says do not remove unless you need to replace.
The problem: I've gone through two pilot bearing seals because I cannot get it to seat against the pilot bearing as the haynes manual states and compared to how my bad engine's (s4) shaft looks. There is an inner lip on the shaft which I can't seem to get the seal to pass. The seal has an outer metal encasing which gets damaged completely if you try to get it passed this lip.
At first glance it looked like the lip was damaged from removal of the old seal. I took a grinder to it and smoothed it out a bit, but the second seal I tried still wont pass it.
I'm beginning to think that this seal doesn't need to meet the pilot bearing as it does on my bad engine. It just doesn't fit. If anyone has any experience with installing this seal please help. I have one seal left and I don't want to have to order anymore from mazdatrix and wait to put this engine in any longer.
Thanks,
RB
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#8
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The pilot bearing has rubber seal on both ends. Get it as square as you can and use a 11mm? socket and extension to tap it in. It will seem too large but it will compress somewhat. ****, it's been 2 years ago since I did this. It's not hard at all.
#9
Well I got it in as far as I think it will go, it just looks like the pilot bearing is too far back? Don't know if that's possible, but if you compare my old engine to the rebuild, the seal appears to be in the same place, but the bearing is further back on the rebuild. Can't seem to get the seal to meet the bearing like it's supposed to
#10
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THe pilot bearing can go in further than you want it to. It should be driven in to about 1/4" under the bevel of the eccentric shaft. Then, the top of the seal when pushed in will be even with the bottom of the bevel.
#12
Originally posted by 1adzam
THe pilot bearing can go in further than you want it to. It should be driven in to about 1/4" under the bevel of the eccentric shaft. Then, the top of the seal when pushed in will be even with the bottom of the bevel.
THe pilot bearing can go in further than you want it to. It should be driven in to about 1/4" under the bevel of the eccentric shaft. Then, the top of the seal when pushed in will be even with the bottom of the bevel.