Question about 1978 Chevrolet C1500

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How does an output shaft seal insert on a 1978 chevy manual transmission go on?

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  • Chevrolet Master
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Pull the driveahaft, pry out yhe old seal wit a flat blade screwdrever, clen up the seal bore of any burs and on the new seal put some #2 permatex on the outer surfave that gores in the seal bore and tap it in evenly, side to side. Try not to **** it or drive it to much at once, The deal goes in with the lip or spring side towards the oil, or sring side in trans. Smooth side out. Good Luck- Ned_

Posted on Sep 13, 2009

Testimonial: "Thanks man! The seal was inserted flat flange inside spring facing outward. was not certain about it being put in right. Oil still spills out though."

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1 Answer

Can a front wheel drive manual output shaft seal be used on an automatic transmission output shaft?


there should be no reason why not as the shafts are the same and the housing for the diff section is the same
all you have to do is get the seals and see if they are the same or go to a bearing shop and see if the part numbers for the seals are the same

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1995 passport troubleshoot slow leak in manual transmission


There is a seal on the input and output shaft and a seal on the top cover . A slow leak will have road dirt collecting on the leaking area. An input shaft leak will in time foul the clutch disk. An output seal will cause the drive shaft to be wet where it connects to the transmission.

Oct 22, 2016 | 1995 Honda Passport

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Do I need to remove the gearbox to replace the output shaft seal or can it be done by removing the shaft and putting a new seal in?


Year/make/model?? Most output shaft seals can be replaced with the transmission in the vehicle, Remove the driveshaft and pry out the old seal. Apply a thin film of grease to the lip of the new seal and carefully install it

Jan 20, 2016 | Cars & Trucks

1 Answer

Rebuilt trans installed in 2011. seal leaked in 2012 and was replaced. 2015 leaking again after 7000 miles. Why?


seals depend on a properly positioned shaft upon which they run
most people when reconditioning a transmission neglect to replace the output shaft ( drive shaft) bush in the transmission extension housing which allows the shaft to move concentric to the seal edge
the seal then cannot preform its duty as the seal surface is continually lost and so leaks
So it would appear that the bush is worn or in the case of transverse transmissions a possible failing bearing or bush

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I have a 1993 Chevy WT1500 pickup with a leaking transmission.


did you use lock tight on the torque converter bolts when installing them? it may be coming loose and ruining the seals. It doesn't take much. You may have some kind of buildup on your output shaft or a bur of some type that is cutting the seal. Check the outside hub of the torque conv. for roughness or spurs. The seals should work if everything is done right.

Feb 01, 2013 | Chevrolet Cars & Trucks

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How do i replace a driveshaft for a 1997 lincon cotanental


I searched under 1997 lincoln continental and found this: Driveshaft and U-Joints
REMOVAL & INSTALLATION Town Car and Mark VII-VIII Fig. 1: The bolts retaining the rear driveshaft yoke-to-differential flange require a 12mm, 12 point wrench or socket to loosen them 91197p12.jpg
Fig. 2: Remove the bolts retaining the rear driveshaft yoke-to-differential flange 91197p11.jpg
Fig. 3: Separate the driveshaft from the axle flange and . . . 91197p13.jpg
Fig. 4: . . . disengage the driveshaft from the transmission output shaft 91197p14.jpg
Fig. 5: Insert a plug onto the splines of the transmission output shaft to prevent fluid from leaking out 91197p15.jpg
  1. Raise and safely support the vehicle.
  2. Mark the position of the driveshaft yoke on the axle companion flange so they can be reassembled in the same way to maintain balance.
  3. Remove the flange bolts and disconnect the driveshaft from the axle companion flange.
  4. Allow the rear of the driveshaft to drop down slightly.
  5. Pull the driveshaft and slip yoke rearward until the yoke just clears the transmission extension housing seal. Mark the position of the slip yoke in relation to the transmission output shaft, then remove the driveshaft.
  6. Plug the transmission to prevent fluid leakage. To install:
  7. Lubricate the yoke splines with suitable grease.
  8. Remove the plug from the transmission and inspect the extension housing seal; replace if necessary.
  9. Align the slip yoke and output shaft with the marks made at removal and install the yoke into the transmission extension housing. Be careful not to bottom the slip yoke hard against the transmission seal.
  10. Rotate the axle flange, as necessary, to align the marks made during removal.
  11. Install the driveshaft yoke to the axle flange. Install the bolts and tighten to 71–95 ft. lbs. (95–130 Nm).
  12. Lower the vehicle.
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Jul 05, 2010 | 1997 Lincoln Continental

1 Answer

Transmission fluid leaking back, 1988 Ford Bronco


your output seal on the tranny or input seal on your transfer case is bad. you have to pull your transfer case to tell. this is a pretty straight forward job. block wheels. put transfer case in neutral. drop front and rear drive lines.diconnect transfer case shift linkage. there is a short commponent connecting the trans to the transfer case. the bolt on either end face each other. remove the bolts to the transmission. the transfer case is heavier than it looks, i suggest getting help. pull back on the transfer case until it will drop down. it will pull out a bit because of the trans output shaft. replace what will probibly turn out to be the tranny output shaft seal and reassemble in reverse order.

Nov 06, 2009 | 1988 Ford Bronco II

1 Answer

My 1986 toyota cressida leaks transmistion fluid out bottom of car where drive line connects to transmisson the transmission is fine how do i fix it


Based on your description I am going to assume your leak is @ the rear of the transmission. If so, the leak would most likely be from the transmission output seal. To fix, you will have to remove the drive-shaft by unbolting it from the rear axle and sliding it rearward out of the transmission. Once the shaft is out of the way, you will need to remove the seal by inserting a pry bar or large screwdriver between the transmission output shaft and the seal lip and pop it out. Sometimes you may have to partially collapse the steel shell inward towards the center with a small chisel and hammer to releive the press fit. Drive the new seal into the bore and reinstall the driveshaft. Check fluid, road test and check for leaks after the road test.

Mar 25, 2009 | 1986 Toyota Cressida

1 Answer

Where do I fill the manual transmission on a 2000 dodge neon?


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1 Answer

4T60E Transmission output shaft movement


Hi Caarl
The lateral movement in the output shaft is normal and nothing to worry about.

Nov 01, 2008 | 1996 Buick Regal Olympic Gold

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