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Old 02-28-2010, 05:23 PM
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9" front seal replacement

is there a "how to" thread on how to replace the front seal on my 9" rearend as seen in the pic below? thanks ed


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Old 02-28-2010, 05:36 PM
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Remove the pinion nut with a 1 1/16 socket and impact wrench. Pull the yoke off and pry out the old seal. Clean the pinion shaft. Clean out the end of the pinion housing and smear a light film of RTV sealant into the housing where the seal will go. Drive in the new seal and smear some grease on the rubber lip. Clean the splines of the yoke and smear some RTV into the splines. Push the yoke back on and put some red Locktite on the threads of the pinion. Use a new pinion nut and torque it to 150 foot pounds. Done.
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Old 02-28-2010, 06:04 PM
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Quote:
Originally Posted by big gear head
Remove the pinion nut with a 1 1/16 socket and impact wrench. Pull the yoke off and pry out the old seal. Clean the pinion shaft. Clean out the end of the pinion housing and smear a light film of RTV sealant into the housing where the seal will go. Drive in the new seal and smear some grease on the rubber lip. Clean the splines of the yoke and smear some RTV into the splines. Push the yoke back on and put some red Locktite on the threads of the pinion. Use a new pinion nut and torque it to 150 foot pounds. Done.
thanks for the response and info. next ?? is how do i id what seal i need as i am still trying to id my rearend, have gotten several responses from the id tag. it reads: WFG-1 -2CB

3L00 9 188A

i do know it is a 3:00 ratio posi but i do not know what all the other numbers represent.....ed
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Old 02-28-2010, 06:30 PM
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Quote:
Originally Posted by vettesplus
thanks for the response and info. next ?? is how do i id what seal i need as i am still trying to id my rearend, have gotten several responses from the id tag. it reads: WFG-1 -2CB

3L00 9 188A

i do know it is a 3:00 ratio posi but i do not know what all the other numbers represent.....ed
All i know from looking is the Ford WFG #s came out from 1970 - 1978 ford and Mercury passenger cars, Hope this helps. And if i am not mistaken there are only two size pinion seals so get both if you have to the take the other back. Take the old one with you to the parts house if doing this local anyway. JMO


Cole
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Old 02-28-2010, 07:51 PM
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National # 7044NA
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Old 03-01-2010, 05:25 AM
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The old seal should have a number on it too, if it isn't obscured by rust. Definitely take it with you to match it up when you go to get the new seal.
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Old 03-01-2010, 11:39 AM
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Quote:
Originally Posted by Rickracer
The old seal should have a number on it too, if it isn't obscured by rust. Definitely take it with you to match it up when you go to get the new seal.
X2

Cole
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Old 03-01-2010, 12:55 PM
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That pinion support uses the Nat-7044NA or CR# 18833. Check the yoke for a wear grove where the seal ride's. If there's a grove the Speedy sleeve# is 99181.
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Old 03-01-2010, 04:11 PM
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After you have the yoke pulled snug, but before you torque it, put some RTV in the cavity formed by the top of the pinion splines and the step on the yoke where the nut contacts, to keep oil from working up the splines and covering the yoke as your appears to have been doing. Dont get the RTV on the threads or the loctite might not work right.
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Old 03-01-2010, 04:54 PM
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That's why I recommended smearing RTV into the splines of the yoke. If you do this then that will take care of it.
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Old 03-01-2010, 05:19 PM
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Quote:
Originally Posted by big gear head
That's why I recommended smearing RTV into the splines of the yoke. If you do this then that will take care of it.
Right on .


Cole
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