Pinion Seal
Thread Starter
Member
Joined: Dec 2015
Posts: 30
Likes: 2
Pinion Seal
Hi All.. first time poster here...
i have a 2007 F150 Crew cab with the 5.4L Triton.. its the 4x4 super cab and today i needed to replace the pinion seal in the rear end. it went like a text book until reassembly.
had the new seal in place and the yolk on the splines and was drawing the yolk in with the nut and my socket wrench. (manual,, breaker bar, not even a ratchet, nice an slow) about halfway thru the travel up the splines, the whole pinion shaft pulled forward, .it moved about 1/4". .it would move freely thru this 1/4" until i pulled it up the splines to limit it. there was a slight rotation as it slides in and out. i can tell it is engaged in the ring gear. i was able to pull the yolk all the way in to set the flange in place in the case.. now, after refilling the pumpkin, with one wheel off the ground, in gear, at idle, there is a clunk with each revolution.. what is in there that could have slipped, or broken that i need to hunt for?
i have a 2007 F150 Crew cab with the 5.4L Triton.. its the 4x4 super cab and today i needed to replace the pinion seal in the rear end. it went like a text book until reassembly.
had the new seal in place and the yolk on the splines and was drawing the yolk in with the nut and my socket wrench. (manual,, breaker bar, not even a ratchet, nice an slow) about halfway thru the travel up the splines, the whole pinion shaft pulled forward, .it moved about 1/4". .it would move freely thru this 1/4" until i pulled it up the splines to limit it. there was a slight rotation as it slides in and out. i can tell it is engaged in the ring gear. i was able to pull the yolk all the way in to set the flange in place in the case.. now, after refilling the pumpkin, with one wheel off the ground, in gear, at idle, there is a clunk with each revolution.. what is in there that could have slipped, or broken that i need to hunt for?
5 Year Member
Joined: Dec 2018
Posts: 4,440
Likes: 1,188
From: Ocean Springs MS
Disconnect the drive shaft and then perform the "there is a clunk with each revolution" and see if the noise is still there.
You have probably already done this, what were the results.
You have probably already done this, what were the results.
Thread Starter
Member
Joined: Dec 2015
Posts: 30
Likes: 2
hi...
i did make progress.
i did not do that.
i took the yolk back out of the rear end and it all looked like it should. i found my center nut was not as tight as it should have been.
and said nut is tighter on the shaft than i can pull.
since i don't have air tools out at my curb, where i'm doing this job, i got some pipe to extend the leverage of my breaker bar.
it was slow, but, it did not strip threads. i won't have to worry about it coming loose.
i don't have the clunk now.. but i do think i tightened the preload a bit too much.. now i get some chatter when i get off the gas and inertia shift the weight.
i'll loosen it up later today ..
i did make progress.
i did not do that.
i took the yolk back out of the rear end and it all looked like it should. i found my center nut was not as tight as it should have been.
and said nut is tighter on the shaft than i can pull.
since i don't have air tools out at my curb, where i'm doing this job, i got some pipe to extend the leverage of my breaker bar.
it was slow, but, it did not strip threads. i won't have to worry about it coming loose.
i don't have the clunk now.. but i do think i tightened the preload a bit too much.. now i get some chatter when i get off the gas and inertia shift the weight.
i'll loosen it up later today ..
Senior Member
Joined: Apr 2023
Posts: 4,276
Likes: 1,386
From: Near Salt Lake City
Generally, a guy will use a wacky packy on that pinion nut
Torquing one is futile unless you have an actual pinion holding tool
I have 3 home made ones for Jeeps and the 10.25 and the 8.8
The ones I have made work on all the axles I deal with on a regular basis
Good luck
Torquing one is futile unless you have an actual pinion holding tool
I have 3 home made ones for Jeeps and the 10.25 and the 8.8
The ones I have made work on all the axles I deal with on a regular basis
Good luck