F250: A Driveline Clunk Or Bump When Starting From A Stop
#16
05-16-2006, 02:17 PM
Originally Posted by devildog_0431
My truck is makin the clunk, usually when I'm coasting in 3rd gear around 20mph and just give it enough to down shift then it clunks, or if I'm at a dead stop and floor it. I thought maybe I was low on tranny fluid....so I just have to drop the rear drive shaft and lube her up ? Is Regular High Temp Grease from my Grease Gun ok ?
A clunk "at speed" could be splines, or most probably u-joints or hanger bearing. I'd check those first!
#17
05-16-2006, 02:36 PM
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#18
05-16-2006, 03:32 PM
The reason for the "Teflon" grease is because of it's impact resistance. Any lube that's made for that purpose will work, devildog. You can actually use any grease, but it won't last long...maybe a couple thousand miles.
Side note: One of these days I'm gonna break down, drill & tap for a fitting and cut grooves in the shaft...one of these days...
Side note: One of these days I'm gonna break down, drill & tap for a fitting and cut grooves in the shaft...one of these days...
#19
05-16-2006, 03:36 PM
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To put in your own grease fitting huh ...?! I've noticed that too...my old Chevys had
Grease Fittings all over and I was ticked off that this SD didn't. I just ripped out a tranny in my buddies 92 Chevy 4x4 and his front spline was bone dry and filled w/ dirt...OMG haha When it makes this clunk sound is it just the spline extending and the pop is just the metal on metal drag or could the keys be stripping ?
Grease Fittings all over and I was ticked off that this SD didn't. I just ripped out a tranny in my buddies 92 Chevy 4x4 and his front spline was bone dry and filled w/ dirt...OMG haha When it makes this clunk sound is it just the spline extending and the pop is just the metal on metal drag or could the keys be stripping ?
#20
05-16-2006, 03:48 PM
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Originally Posted by ymmv
I have a clunk (moving from P or R or N to D) but I can't believe it's caused by dry splines (which have the symptom of binding and grinding, not clunking) simply because splines just aren't course enough to hold a prop shaft.
That said, it could still be dry splines but there would have to be another factor such as the carrier bearing play or a rubber bushing or something to allow the splines to hold the shaft and then have it push and release to make the clunk (which is probably putting some horrible side-load forces on other bearings in the drive-train.
That said, it could still be dry splines but there would have to be another factor such as the carrier bearing play or a rubber bushing or something to allow the splines to hold the shaft and then have it push and release to make the clunk (which is probably putting some horrible side-load forces on other bearings in the drive-train.
#21
05-16-2006, 03:56 PM
Take the entire driveshaft out, and bring it to a driveshaft shop. They can either add the grease fitting, or put a new "unit" in it that has one.
I plan on taking my clunking (since new) driveshaft and having a CV joint put on one end (driveline vibration from new on take-off) and getting a grease fitting put in it.
Now, do I strap it to the top of the Cougar, or just run around in front-wheel drive with the Superduty? .....
I plan on taking my clunking (since new) driveshaft and having a CV joint put on one end (driveline vibration from new on take-off) and getting a grease fitting put in it.
Now, do I strap it to the top of the Cougar, or just run around in front-wheel drive with the Superduty? .....
#22
05-16-2006, 04:59 PM
Originally Posted by devildog_0431
When it makes this clunk sound is it just the spline extending and the pop is just the metal on metal drag or could the keys be stripping ?
KREWAT - Do the FWD thing....
#23
05-16-2006, 05:12 PM
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#24
05-16-2006, 05:24 PM
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#25
05-16-2006, 05:46 PM
Originally Posted by Big Orn
KREWAT - Do the FWD thing....
Unbolted it, put it in 4WD and left.It was rather funny watching other peoples' faces while peeling out at traffic lights with both front tires... this was 20 years ago. It was weird enough to see a FWD car, much less an F250
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05-16-2006, 05:59 PM
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#28
05-16-2006, 07:47 PM
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Thats why I have a Wally-World sized bag of Zip Ties handy all the time. I'll stick her on there when I get off work. I'd rather just use a large bolted clamp to keep that boot from slippin, zip ties are fine till now. Not to mention my license plate came off....redneck engineered License Plate holders don't last forever, oh well...its cheap...how i like it.
#29
05-16-2006, 08:28 PM
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Originally Posted by Big Orn
Side note: One of these days I'm gonna break down, drill & tap for a fitting and cut grooves in the shaft...one of these days...
#30
02-10-2009, 05:40 PM
