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Old 12-09-2015, 09:18 PM   #1
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motor mounts

i have a 96 thomas er with a 8.3, the rubber is falling off the mounts on either side of the motor. anyone change these themselves, any links to parts would be great. thank you
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Old 12-10-2015, 01:10 AM   #2
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Diesels tend too be rough on motor mounts. Good idea to check and or replace when they get tired. Need to jack up the motor and from there pretty easy nut & bolt job on most.
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Old 03-12-2016, 10:45 PM   #3
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noticed that my motor mounts were in sad shape as well.

blue bird and the cummins 5.9 seems to have a unique set up different than other vehicles that use the same motor.

there is a front mount under the harmonic balancer that i'm having trouble locating. any help appreciated..
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Old 03-16-2016, 04:50 PM   #4
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i can find the steel pieces of the motor mount in the service manual. but i cant find the rubber insert that should be there.

front motor mount:
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Old 05-19-2016, 10:05 PM   #5
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i finally got the new motor mount from cummins.

they gave me the option of overnighting the part to me and now i wish i had taken them up on it. just a bit under 60 days from ordering the part for it to arrive.



getting the old mount out was the hardest part, this sleeve was tough!!~!!



but an hydraulic press won the job and got everything back together.




the motor isnt riding on metal any more........

boy, did it make a difference in the cab noise too!!!

nice and smooth
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Old 05-19-2016, 10:24 PM   #6
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Nice job, and look you don't have a 53 block.
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Old 05-19-2016, 10:27 PM   #7
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You're probably causing a lot of people to go out and look at their motor mounts now. Is Cummins the only place to get the mounts?
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Old 05-19-2016, 10:33 PM   #8
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that front mount was cummins only. there are 2 more side mounts that are international truck numbers.

the front one is part of the cummins 5.9, the side ones are parts of the body.
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Old 05-19-2016, 10:42 PM   #9
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You'll find Cummins with a dozen or so different mounts because they are speced by the chassis builder. Supposedly the best are Lord fluid mounts but they are crazy expensive, hard to find and tend to wear pretty quickly. Others are solid but transmit more vibes. Depending on what you started with, most can be found at any big auto parts store for a fraction of the "OEM" price. The hardest part is that these days, auto countermen don't know squat about auto parts. Back in the day, you could walk in with just about any component and the guys would recognize the make, model and year as well as know a half dozen crossovers that would work. Not any more. If you don't have a VIN number to look up on a computer...they are totally lost.
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Old 05-20-2016, 09:04 AM   #10
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after international said they didnt have the mount, i tried cummins, and they swore up and down that they did'nt have the mount. (parts guy).

then i learned of cummin's quickserve. find your EIN (engine ID number), and where you can find all part numbers on your motor.

that front mount showed up with a part number and i was in business. I called cummins back and ordered the bushing.

as i stated previously,i declined the overnight overnight shipping and waited and waited. 6 weeks or so, and i call cummins back to check on the part. the first parts guy said again, cummins doesnt make motor mounts, and couldnt find my order, name..... anything.

i hung up and called back with the part number off of the cummins quickserve. and boom, the part was sitting there, waiting to be shipped to me.

it took another week to get the new one installed, but im glad..... motor is smooth now, much less clatter that i had accepted as usual.

just a few days over 60 from start to finish....par for the course.

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