rum-rum-rum= transfercase sound
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rum-rum-rum= transfercase sound
1987 F250 7.3 dsl. 5 speed. 4x4
Got a 1356 tc and at 55mph it vibrates badly and makes a rum rum rum sound.
I can feel and see it in the shift levers.
This spring I found that I was running it really low on grease for about a month which equates to about 500 miles give or take.
I couldn't take it out of service so I topped off the case.
It has increasingly got worse.
I replaced some worn u joints so I know the noise is not them.
The rear output shaft has a lot of play coming out of the rear of the tc.
Other than the noise it shifts fine.
Is there a bearing that can be replaced at the output end or is it going to be more involved than that?
Thanks for your help.
If you need more info please let me know.
Got a 1356 tc and at 55mph it vibrates badly and makes a rum rum rum sound.
I can feel and see it in the shift levers.
This spring I found that I was running it really low on grease for about a month which equates to about 500 miles give or take.
I couldn't take it out of service so I topped off the case.
It has increasingly got worse.
I replaced some worn u joints so I know the noise is not them.
The rear output shaft has a lot of play coming out of the rear of the tc.
Other than the noise it shifts fine.
Is there a bearing that can be replaced at the output end or is it going to be more involved than that?
Thanks for your help.
If you need more info please let me know.
Senior User
Joined: Jun 2010
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From: Long Island, NY
Is the vibration only around 55 or does it get worse with speed? Reason I ask is last fall mine had a squeek very intermittently. Right after the first snow storm I started getting evactly what u were describing viberation around 50-55 and rubbing/grinding sound. Ended up being carrier bearing was shot. Just a thought for u
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Is the vibration only around 55 or does it get worse with speed? Reason I ask is last fall mine had a squeak very intermittently. Right after the first snow storm I started getting exactly what u were describing vibration around 50-55 and rubbing/grinding sound. Ended up being carrier bearing was shot. Just a thought for u
Gets slightly worse with speed.
Please excuse my ignorance but where is the carrier bearing?
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different tc
Or is there a way to tell by looking at it?
Thank you for your reply.
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Senior User
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From: Long Island, NY
If u have the 2 peice drive shaft its the thing that holds the drive shaft up to the bed. Looks like a big u bolt with a bearing in the middle the drive shaft goes through. My viberation would start just below 50 and get worse till about 65. Was not very noticeable at low speed. If it was not for the vibration and noise I would have thought it was a tire balance problem
Postmaster
Joined: Feb 2011
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for T-case identification, all you're looking at is the difference in output shaft style (slip yoke is visibly different from flange) and shift style (is it a motor or a lever) and speedo cable hole (present or not). all 3 points are super easy to identify. for output shaft style, the forward shaft always has a flange style, so even a newb can tell if the rear is the same or different.
i'm not aware of any serial numbers to help, but i'm sure they're there if you know what to look for (i don't), but IMHO looking for numbers is harder than looking for styles.
i'm not aware of any serial numbers to help, but i'm sure they're there if you know what to look for (i don't), but IMHO looking for numbers is harder than looking for styles.
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