Deener Posted March 23, 2011 Share Posted March 23, 2011 93 Loyale SPFI, NON TURBO As I was assembling the oil pump with a new gasket, shaft seal and a ring last night I found that the gear/spindle refused to turn as soon as I had tightened the bolts down. It would spin fine just before the last quarter turn but after that it wouldn't. The shaft has a little in and out play and thats normal, but shouldn't the gear/spindle still turn once the 5 bolts are tight? I am convinced that it should spin. The pump lines up nicely and the bolts go on smooth and it seems to mate to the block perfectly but after I tigthen the bolts down to snug, the spindle will NOT turn. What could I be doing wrong? I tried a few times over last night with no luck. Any thoughts? Quote Link to comment Share on other sites More sharing options...
TheLoyale Posted March 23, 2011 Share Posted March 23, 2011 (edited) You are right, it should spin pretty freely, When you put the shaft seal in (O-ring) for the outter rotor, did the o-ring get caught behind it? Cause the o-ring slides into a grove on the rotor wheel. Other then that, check for debris that could be getting it stuck in the rotor housing bore. Post if you find out what it is. -Tom Edited March 23, 2011 by TheLoyale Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted March 23, 2011 Share Posted March 23, 2011 Yes it should definitely spin. Perhaps the pump is assembled incorrectly? Get out the mic. and depth gauges and check the thickness of the rotor, it's distance from the pump mating surface and the depth of the cavity in the block, etc. Find where the problem is..... GD Quote Link to comment Share on other sites More sharing options...
Deener Posted March 23, 2011 Author Share Posted March 23, 2011 I watched from the bottom (its on an engine stand) to make sure the mickey mouse gasket sealed properly when putting the bolts in. The O-ring stayed in it's place too. The shaft seal went on easily and without any trouble when I took it apart. It really didn't make sense to me why it would bind up after being tightened. The oil pumps are the same between 93 and 94, correct? I have an extra pump to try. Doubt its debris becuase I have cleaned the whole block and the pump profusely in and out with solvent and air. I even slipped an old timing belt around it and tried to turn it...its wedged in there pretty good. I'll just try again tonight and report back. Quote Link to comment Share on other sites More sharing options...
TheLoyale Posted March 23, 2011 Share Posted March 23, 2011 Yes, Oil pumps from 1985-'94 for the EA82 will all be the same from my understanding. As GD said, maybe the pump shaft is not 100% in all the way and could be bottom out in its bore once you put the final torque on it. Good luck. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted March 23, 2011 Share Posted March 23, 2011 There are some very slight differences in the diameter of the bore in the block and the spec of the pump. They have A, B, and C pumps from the factory though I think all the replacement pumps are A's. They all fit and work though it's just the diameter of the bore and clearance with the outer pump rotor..... I would suspect it's not assembled quite right or hanging up on something. GD Quote Link to comment Share on other sites More sharing options...
Deener Posted March 23, 2011 Author Share Posted March 23, 2011 Cool, thanks for the input guys. I am 'pumped' to get this one going... Dean Quote Link to comment Share on other sites More sharing options...
mickytrus Posted March 23, 2011 Share Posted March 23, 2011 keep it spinning as you tighten the bolts just to see what is up...... Also, good idea to pack it with vaseline. this will ensure that the oil get sucked up quickly. Quote Link to comment Share on other sites More sharing options...
kanurys Posted March 24, 2011 Share Posted March 24, 2011 And make sure the letter on the face of the star rotor and cylinder rotor that both spin are facing the same way. I think there is some sort of tolerance issue there, too, which could cause binding... I can't remember if the correct direction is towards the engine or away. Guys? Quote Link to comment Share on other sites More sharing options...
TheLoyale Posted March 24, 2011 Share Posted March 24, 2011 And make sure the letter on the face of the star rotor and cylinder rotor that both spin are facing the same way. I think there is some sort of tolerance issue there, too, which could cause binding... I can't remember if the correct direction is towards the engine or away. Guys? That does remind me, I think the marking goes outwards (Towards the engine) I remember reading in my Chilton some time ago, how that could effect fitment. Good call! Quote Link to comment Share on other sites More sharing options...
Deener Posted March 24, 2011 Author Share Posted March 24, 2011 Well for some reason, with the engine upside down on the stand (oil pan up) it was binding during install. The binding was fairly noticeable when tensioning and releasing the longest bolt, like I could feel the pump being crooked/not on correctly as I applied light tension to that particular bolt near the end of it's thread. I spun the engine around, right side up, and then the pump went on perfectly...twice. Hard to say why but it's on there now and spinning just fine. Thanks for the input everyone. Quote Link to comment Share on other sites More sharing options...
TheLoyale Posted March 24, 2011 Share Posted March 24, 2011 Huh, thats just plain werid, and thats my professional opinion At least its on and working now, A+ to that! Quote Link to comment Share on other sites More sharing options...
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