69 rambler 199 rear main seal

They all leak a bit. Bet if it was a daily driver it would all most stop. You can't change it in the vehicle.

Have AMC Fun,
Ollie

Edited by Ollie - May/20/2016 at 3:46pm

HI are you sure its not leaking down from the back of the valve cover and down.. a Rear main and the oil pan gasket are two different items. (the rear main is around the crank not the pan) if its the rear main the motor has to come out or the transmission has to come off along with the fly wheel/flex plate to access the rear main.
good luck
tim

It's definitely coming from the dust cover where the engine and trans meet. The back of the head and top of the trans are dry, it's either the main seal or that camshaft plug. I will see if I can remove the cover, then start it up and verify where it's coming from.... Thanks for the input guys!! Either way it looks like i'll have to pull the engine...

Ok .. good luck on the repair.. Thumbs Up

good luck
tim

The seal can be changed without removing the motor. Engine can be jacked up enough to remove the pan. You will need to loosen the bolts that hold the crossmember to the engine as well. It's best to remove the tires and wheels, as the weight will be an issue when pulling hte crossmember down and reinstalling it. You don't need to disconnect the lower control arms unless you want to remove the crossmember altogether (not necessary).

It's hard to get the top neoprene seal half out and in. Loosen the rear main cap. You will likely have to loosen the other main caps (except the front) as well. Pull all spark plugs to make turning the engine (by hand) easier. Take a 16d nail and cut it down to about 3/8" below the head. Rotate the crank until the oil hole is just about to go under the top seal half. Insert the nail in the oil hole. Rotate the crank and the nail head will push the seal out. You can use the same method to rotate it all the way back in. Make sure the head isn't going to be tight between the crank and block. It's shouldn't be hard enough to scratch the block, but no need to take any chances.

Frank Swygert

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Johnny72 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Fan Joined: May/15/2016 Location: Illinois Status: Offline Points: 17	Post Options Post Reply Quote Johnny72 Report Post Thanks(0) Quote Reply Topic: 69 rambler 199 rear main seal Posted: May/20/2016 at 3:07pm
	I searched for this topic,but couldn't find it. I thought I would ask before I tear into it... My 199 is leaking from the rear main seal. Can I raise the engine high enough to get the oil pan off? I was hoping it could be done without pulling the engine... It runs like a top, and that is the only place it's leaking from...

Ollie Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Sep/17/2012 Location: Brandon, MS Status: Offline Points: 2803	Post Options Post Reply Quote Ollie Report Post Thanks(0) Quote Reply Posted: May/20/2016 at 3:23pm
	They all leak a bit. Bet if it was a daily driver it would all most stop. You can't change it in the vehicle. Have AMC Fun, Ollie Edited by Ollie - May/20/2016 at 3:46pm

Johnny72 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Fan Joined: May/15/2016 Location: Illinois Status: Offline Points: 17	Post Options Post Reply Quote Johnny72 Report Post Thanks(0) Quote Reply Posted: May/21/2016 at 12:23am
	Thanks... If it was just seeping a little, I would let it go for now.. After the engine has been running for a few minutes, it starts dripping pretty steadily... I want to take care of it before I start driving it...

pedal2themetal45 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Mar/01/2014 Location: Boise Status: Offline Points: 27	Post Options Post Reply Quote pedal2themetal45 Report Post Thanks(0) Quote Reply Posted: May/21/2016 at 7:49am
	HI are you sure its not leaking down from the back of the valve cover and down.. a Rear main and the oil pan gasket are two different items. (the rear main is around the crank not the pan) if its the rear main the motor has to come out or the transmission has to come off along with the fly wheel/flex plate to access the rear main. good luck tim

vinny Members Profile Send Private Message Find Members Posts Add to Buddy List Supporter of TheAMCForum Joined: Jan/05/2012 Location: Calgary Status: Offline Points: 2837	Post Options Post Reply Quote vinny Report Post Thanks(0) Quote Reply Posted: May/21/2016 at 8:14am
	There is also the plug at the back of the camshaft as a potential source of a leak.

Johnny72 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Fan Joined: May/15/2016 Location: Illinois Status: Offline Points: 17	Post Options Post Reply Quote Johnny72 Report Post Thanks(0) Quote Reply Posted: May/21/2016 at 9:56am
	It's definitely coming from the dust cover where the engine and trans meet. The back of the head and top of the trans are dry, it's either the main seal or that camshaft plug. I will see if I can remove the cover, then start it up and verify where it's coming from.... Thanks for the input guys!! Either way it looks like i'll have to pull the engine...

Johnny72 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Fan Joined: May/15/2016 Location: Illinois Status: Offline Points: 17	Post Options Post Reply Quote Johnny72 Report Post Thanks(0) Quote Reply Posted: May/21/2016 at 1:37pm
	Pulled the dust cover and started the engine.. It's definitely the rear main seal, I could see oil dripping off the crank.. Time to start pulling the engine... Thanks again for the responses!!

pedal2themetal45 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Mar/01/2014 Location: Boise Status: Offline Points: 27	Post Options Post Reply Quote pedal2themetal45 Report Post Thanks(0) Quote Reply Posted: May/21/2016 at 5:55pm
	Ok .. good luck on the repair.. good luck tim

Ollie Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Sep/17/2012 Location: Brandon, MS Status: Offline Points: 2803	Post Options Post Reply Quote Ollie Report Post Thanks(0) Quote Reply Posted: May/21/2016 at 10:29pm
	I was sure hoping for a bad valve cover gasket. Sorry to hear your news. Have AMC Fun, Ollie

farna Members Profile Send Private Message Find Members Posts Add to Buddy List Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19692	Post Options Post Reply Quote farna Report Post Thanks(0) Quote Reply Posted: May/22/2016 at 11:05am
	The seal can be changed without removing the motor. Engine can be jacked up enough to remove the pan. You will need to loosen the bolts that hold the crossmember to the engine as well. It's best to remove the tires and wheels, as the weight will be an issue when pulling hte crossmember down and reinstalling it. You don't need to disconnect the lower control arms unless you want to remove the crossmember altogether (not necessary). It's hard to get the top neoprene seal half out and in. Loosen the rear main cap. You will likely have to loosen the other main caps (except the front) as well. Pull all spark plugs to make turning the engine (by hand) easier. Take a 16d nail and cut it down to about 3/8" below the head. Rotate the crank until the oil hole is just about to go under the top seal half. Insert the nail in the oil hole. Rotate the crank and the nail head will push the seal out. You can use the same method to rotate it all the way back in. Make sure the head isn't going to be tight between the crank and block. It's shouldn't be hard enough to scratch the block, but no need to take any chances.
	Frank Swygert