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Harmonic vibration at hwy speeds in 97 Ford Explorer
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<blockquote data-quote="Wile E Coyote" data-source="post: 874596" data-attributes="member: 28381"><p>a thought on U-joints with and without fittings from recent experience;</p><p> </p><p>My Chevy blazer (02) had rear drive U-joints replaced last fall after approximately 245k miles on the OEM parts. We used the type with grease fittings as replacements. They were done (worn out) by June. In their short life they were greased twice; once upon installation and again in the middle of the winter during a oil change and lube. </p><p> </p><p> </p><p>When the failure happened in June, naturally, I wasn't anywhere near home. But the repair station a block away from the breakdown was a 4WD and off-road specialty shop. They used fitting-less U-joints to effect the repair. </p><p> </p><p>When I questioned the selection and the owner of the shop showed me several of the vehicles in the yard, all had fitting-less U-joints. Some of these vehicles were road worthy and others were strictly off road. All were considerably more heavy duty than my little Chevy. Chris' explained to me that the Zerk fitting that allowed the U-joint to be greased also allowed dirt and water to infiltrate thereby accelerating the next failure. This could be avoided, or at least minimized by weekly lubrication BUT who's gonna' do that? </p><p> </p><p>A buddy had a similar situation with his Dodge 3500. He does a lot of towing with a construction trailer too. The cheap parts failed in weeks. The better parts lasted longer but still failed in a month or two. Then he replaced with fitting-less and that was 2 years ago. still going. </p><p> </p><p>jmden, ask your driveline guy about this if the work hasn't been done yet. </p><p> </p><p>Pete</p></blockquote><p></p>
[QUOTE="Wile E Coyote, post: 874596, member: 28381"] a thought on U-joints with and without fittings from recent experience; My Chevy blazer (02) had rear drive U-joints replaced last fall after approximately 245k miles on the OEM parts. We used the type with grease fittings as replacements. They were done (worn out) by June. In their short life they were greased twice; once upon installation and again in the middle of the winter during a oil change and lube. When the failure happened in June, naturally, I wasn't anywhere near home. But the repair station a block away from the breakdown was a 4WD and off-road specialty shop. They used fitting-less U-joints to effect the repair. When I questioned the selection and the owner of the shop showed me several of the vehicles in the yard, all had fitting-less U-joints. Some of these vehicles were road worthy and others were strictly off road. All were considerably more heavy duty than my little Chevy. Chris' explained to me that the Zerk fitting that allowed the U-joint to be greased also allowed dirt and water to infiltrate thereby accelerating the next failure. This could be avoided, or at least minimized by weekly lubrication BUT who's gonna' do that? A buddy had a similar situation with his Dodge 3500. He does a lot of towing with a construction trailer too. The cheap parts failed in weeks. The better parts lasted longer but still failed in a month or two. Then he replaced with fitting-less and that was 2 years ago. still going. jmden, ask your driveline guy about this if the work hasn't been done yet. Pete [/QUOTE]
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Harmonic vibration at hwy speeds in 97 Ford Explorer
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