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12-23-2022, 05:08 AM | #1 |
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Need best way to remove diff. pinion shaft assembly
I'm overhauling the rear axle in my 37 ford Pick Up and installing new 3.78 ring and pinion gear. I have all new bearings and seals to go in. How the heck do you get the pinion shaft/thrust bearings out of the center housing? How do you get the pilot bearing out of the center housing? I had an old torque tube from a home made trailer that I bored out so the bearing would pass thru and used a shaft coupler welded to a 7/8" nut to build a puller but all I do is sheer the 1/4" coupler pin. I've hunted U-tube and found really good videos on reassembly but only one that shows someone taking the pinion shaft out and I think the method he used would distort the housing. Is there a tool I can buy to do this or is there a tried and true method for removal of the pinion shaft?
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12-23-2022, 09:31 AM | #2 |
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Location: Solihull, England.
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Re: Need best way to remove diff. pinion shaft assembly
I used a press when I did mine. You can jack it out from inside but as you say, you don't want to distort the housing.
As you already have a puller, why not apply that, and then make up some sort of improvised screw jack to push from inside at the same time. The combination of the two might do the trick. You could also try a piece of steel stronger than the normal pin. I'm thinking a piece cut from a screwdriver blade or something like that. If using a press you need a couple of bridges to apply the load where needed. Mart. |
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12-23-2022, 10:06 AM | #3 |
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Re: Need best way to remove diff. pinion shaft assembly
I would check with Ken/Alabama as he made an outstanding puller. He posted pictures years ago but I can't find the post. Worth checking out. Dave/Green Bay
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12-23-2022, 10:42 AM | #4 |
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Location: Alabama
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Re: Need best way to remove diff. pinion shaft assembly
Here’s the tool I have for removing the pinion.
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12-23-2022, 11:29 AM | #5 |
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Re: Need best way to remove diff. pinion shaft assembly
Heating the race end of the housing is going to help you a lot. The home made pusher shown in the previous post is an excellent way to do the push. However I have had great success doing the pushing with a simple small bottle jack with a spacer siting inside so the jack is pushing squarely against the pinion. With a bit of pre load with the jack and some heat on the outer surface of the housing the race assembly will begin moving once you see it move just pump the jack no need to use any additional heat. If you have any concern on possibly distorting the housing just bolt on one of the side bells that will keep everything round. At least that's how it works for me.
Ronnieroadster
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12-23-2022, 12:47 PM | #6 |
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Re: Need best way to remove diff. pinion shaft assembly
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12-23-2022, 01:32 PM | #7 |
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Re: Need best way to remove diff. pinion shaft assembly
I do it like that ^^^, in a press. Never had to use any heat
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12-23-2022, 03:53 PM | #8 |
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Re: Need best way to remove diff. pinion shaft assembly
I made a tool about 30 years ago that pushes the pinion and double tapered roller bearing assembly out of the banjo housing like Ken/Alabama does with his little bottle jack tool, and it worked fine. It's pictured here on a thread that was posted many years ago, regarding tools that members made to do a specific job, rather than purchasing them.
Several years later I saw a post here that showed the pinion gear being pushed out by the same method that Flathead Fever posted and I've used that same method for the last 20 years. This seems to be the easiest and quickest way to go if you happen to have the correct size hydraulic press.
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John "Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein Last edited by JM 35 Sedan; 12-23-2022 at 04:02 PM. |
12-23-2022, 10:22 PM | #9 |
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Re: Need best way to remove diff. pinion shaft assembly
I've copied the pictures of Kens tool and will try that. My puller just keeps sheering the pinion shaft coupler pins. I think if I could attach to the threads on the shaft and clamp it there similar to a model T rear hub removal tool, the puller would work. Right now, I don't have a boring bar that would cut internal threads.
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12-24-2022, 11:09 AM | #10 |
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Re: Need best way to remove diff. pinion shaft assembly
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01-02-2023, 10:16 PM | #11 |
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Re: Need best way to remove diff. pinion shaft assembly
I ended up buying a shop press and used a 4X4 piece of box steel to push down and a turned piece of round stock under the pilot bearing to et the pinion shaft out. I'm getting ready to put the rear and back together. Which way does the axle seal go in the axle housing? It has sort of a conical shape to the ID of the seal. Which way does that point? Does it point to to the ring gear or does it point to the outside end of the axle housing?
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01-02-2023, 10:52 PM | #12 |
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Re: Need best way to remove diff. pinion shaft assembly
Towards the ring gear. Also put a wrap of electrical tape on the tapered end of the axle covering the keyway slot. That will prevent the sharp edge of the keyway from cutting the new seal as it passes through.
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01-15-2023, 02:24 AM | #13 |
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Re: Need best way to remove diff. pinion shaft assembly
I agree with the press, even with heat still got a good pop from the pinion bearing!
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01-15-2023, 08:37 AM | #14 |
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Re: Need best way to remove diff. pinion shaft assembly
I purchased a cheap ($35) 2-arm puller and modified it just by shortening the center bolt 2-7/8" and welded a nut onto it instead. The puller is 6.5" wide and the arms 4" long. It works very good. I got the tip from my buddy Dan so all credits to him.
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01-15-2023, 11:55 AM | #15 |
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Re: Need best way to remove diff. pinion shaft assembly
I use my press and bridging and as B&S said, heat around where the pinion race is. My press is large enough that essentially the bridging holds a non moving piece of shaft of different lengths that pushes on the end of the pinion and the press pushes the banjo down and off the pinion not the other way around. The banjo moves not the pinion. I push on the banjo flange with a piece of tubing that the pinion race can go through and long enough to move the banjo the required distance. Easy when you have done it before. Similar to Ken/Alabama method.
Last edited by deuce_roadster; 01-15-2023 at 12:18 PM. |
01-15-2023, 01:36 PM | #16 |
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Location: so cal, placerville, vegas
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Re: Need best way to remove diff. pinion shaft assembly
Repeat of what has already been posted. Here's mine...
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01-15-2023, 03:50 PM | #17 |
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Re: Need best way to remove diff. pinion shaft assembly
BlueNotes, I like that puller you are using. What brand? I like the way it is designed. I can't read the make in the picture.
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01-16-2023, 02:54 AM | #18 |
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Re: Need best way to remove diff. pinion shaft assembly
Bob.... That set-up almost makes the process seem TOO EASY! Coop |
01-16-2023, 03:12 AM | #19 | |
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Re: Need best way to remove diff. pinion shaft assembly
Quote:
The brand of my puller is the swedish retail corporation "Biltema" that operates a chain of discount department stores in Scandinavia (Sweden, Finland, Norway and Denmark). The puller is a copy of the universal 2-arm pullers sold worldwide by other european tool brands, eg KUKKO, GEDORE, BAHCO and HAZET. However, those brands are expensive. I searched Amazon and the cheapest "look-alike" I found was this BILITOOL puller. https://www.amazon.com/BILITOOLS-Int...2s9dHJ1ZQ&th=1 |
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01-16-2023, 08:21 AM | #20 |
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Location: Florida panhandle
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Re: Need best way to remove diff. pinion shaft assembly
Interesting concepts, last image looks doable with little rigging. I recall I made a puller that involved a fixture under the nuts connected to small chain pushed with small bottle jack and involved a split piece of 4 or 5” pipe for a jack base…. A real goofy rig that made my first banjo rebuild happen.
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