Where to Apply Syn Grease to Poly Bushings
#1
Le Mans Master
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Where to Apply Syn Grease to Poly Bushings
Quick question.... when assembling the poly bushings, the bore of the part is not lubed, nor is the outer portion of the bushing correct?
I should only lube the inner bore and the outer part of the sleeve... is that right?
I should only lube the inner bore and the outer part of the sleeve... is that right?
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ctmccloskey (06-13-2018)
#3
Tech Contributor
#4
Le Mans Master
That's what I'd do. The sleeve that rides in the inner bore is supposed to rotate within the inner bore. So that definitely needs to be lubed. The urethane is not supposed to spin inside the outer metal shell. So I would not put grease on the outer surface of the urethane.
#5
Instructor
Lube everything!
I recently spoke with the tech guy at Prothane, because one of my newly installed poly bushings on a control rod was rotating within the rod. They recommended lubing the bushings anywhere the polyurethane comes in contact with metal. Even the outside diameter of the bushings that gets pressed into the rods. Again, following the lube everywhere the bushing contacts metal, they also recommender to lube the "face" of the bushings where it connects to the brackets or spindles, etc.
He also said that (although not officially recommended by the manufacture,) you can use any type of weatherproof lube, such as an anti seize to lubricate the bushings. Since I was out of the specimen sized tubes of their special lube, I used some Copper based anti-seize on a few of the outside diameters, that are not supposed to move. I would stick to the special lube that the manufacture supplies with their bushings for lubing the inside diameter of the bushing where the metal sleeve is supposed to rotate within the bushing.
He also said that (although not officially recommended by the manufacture,) you can use any type of weatherproof lube, such as an anti seize to lubricate the bushings. Since I was out of the specimen sized tubes of their special lube, I used some Copper based anti-seize on a few of the outside diameters, that are not supposed to move. I would stick to the special lube that the manufacture supplies with their bushings for lubing the inside diameter of the bushing where the metal sleeve is supposed to rotate within the bushing.
Last edited by SLOASC4; 06-14-2018 at 08:08 AM. Reason: Not done
#6
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That's what I'd do. The sleeve that rides in the inner bore is supposed to rotate within the inner bore. So that definitely needs to be lubed. The urethane is not supposed to spin inside the outer metal shell. So I would not put grease on the outer surface of the urethane.
#7
Le Mans Master
Originally Posted by adamsullivan44
they also recommender to lube the "face" of the bushings where it connects to the brackets or spindles, etc.