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07-28-2011, 06:42 PM | #1 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Dana-44 forward pinion bearing removal
Is there any trick to removing the pinion gear from a Dana-44 front axle?
I have the axles & carrier out, pinion yoke & seal off and the pinion gear is loose & moves around but I can't get it to break free of the forward pinion bearing. With all the other axles I have pulled apart the forward bearing just about falls out once you take the yoke off & remove the seal. I gave it a few smacks with the 3-pound hammer and no movement. I have it on the 20-ton press and don't want to put any pressure on it until I make sure there isn't some retainer clip or something else holding it in. The pinion was very loose when it was still assembled and moved about 1/4" side to side. The pinion yoke was also heat discolored on the edge that touches the forward pinion bearing. From the blue oxidation color it saw at least 540 degrees on the yoke. I'm afraid the pinion bearing inner race may be welded to the pinion bearing. Is there something I'm missing that will let it drop out or should I just put some real pressure on it and see if it breaks free?
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
07-28-2011, 07:21 PM | #2 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Dana-44 forward pinion bearing removal
There is probably just a burr on the splines or it may just be siezed from the heat that you mentioned.
Either way, there is nothing that is suppoed to be holding it in there.
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07-29-2011, 01:35 AM | #3 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
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Re: Dana-44 forward pinion bearing removal
Good to know. Thanks for the help. I will put some pressure to it on the press and see what gives first.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
07-29-2011, 10:30 AM | #4 |
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Location: wichita falls tx
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Re: Dana-44 forward pinion bearing removal
x2
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"I'm Dirk Diggler enough to own and operate a vehicle of this caliber" -veinbar Dropped and LS Swapped SWB 87 Build Thread |
07-29-2011, 03:09 PM | #5 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
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Re: Dana-44 forward pinion bearing removal
Got it out. Took a die grinder and a chisel to break apart the inner race so the pinion could get past the outer race & roller bearings.
Housing is in good shape still. Just need to see if I can get the inner race separated from the pinion gear to evaluate the condition of the gear. Worst thing that happens is I have to get another set of gears for it. I will get some pics of it when I get home.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
07-30-2011, 12:57 PM | #6 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: Dana-44 forward pinion bearing removal
Took nearly three hours but I got the pinion out out without hurting the rear end housing or doing any additional damage to the pinion gear.
The pinion gear is heat discolored for about an inch rearward of the forward bearing. I don't know if it is enough to weaken the pinion gear or not. Most likely it will fail under heavy load so I am going to look for a better set of gears. The roller bearings were hammered and not rolling too well if at all. I will try to get the inner race off without hurting the pinion gear and see how it looks. It is being pretty stubborn and may not come off.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
07-30-2011, 04:54 PM | #7 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Dana-44 forward pinion bearing removal
When the bearings are that hammered, the gears are shot anyway.
Persistence is great, but there is a time to give up the fight.....there really is nothing to gain.
__________________
You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. |
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