motor mount replacemant with a jack
#1
Senior Member
Thread Starter
Join Date: Mar 2010
Location: Alaska
Posts: 589
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee(XJ)
motor mount replacemant with a jack
hey,
i have to change the motor mounts on 94 xj when i did this last time on the 88 xj i had an oil leak coming from the oil pan, im not sure if this is related but does jacking up the engine for motor mount replacement with some wood and a jack hurt the oil pan seal ?
maybe there is another alternative way ?
thanks
-Marc
i have to change the motor mounts on 94 xj when i did this last time on the 88 xj i had an oil leak coming from the oil pan, im not sure if this is related but does jacking up the engine for motor mount replacement with some wood and a jack hurt the oil pan seal ?
maybe there is another alternative way ?
thanks
-Marc
Last edited by LadyKenai; 06-20-2018 at 06:37 PM.
#2
I have done this same thing on a 98 and 99. I put a block of wood between the jack and pan and I didn't notice and long term ill effects. The weight will get distributed pretty evenly.
#3
Senior Member
Thread Starter
Join Date: Mar 2010
Location: Alaska
Posts: 589
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee(XJ)
thanks for your reply,
i have been looking underneath to somehow try support it with a jack at the engine bracket, i know it doesnt need that much to raise it only small amount but there is not much room to do it that way.. hmm
marc
i have been looking underneath to somehow try support it with a jack at the engine bracket, i know it doesnt need that much to raise it only small amount but there is not much room to do it that way.. hmm
marc
#4
I use a small piece of 2x4 right under the oil sump, where the X looking indentation is. That is really strong and will not buckle. You really don't need to raise it much. Raise it enough to take the pressure off the engine mount bolts and it's a piece of cake.
#6
CF Veteran
Join Date: May 2012
Location: Lost in the wilds of Virginia
Posts: 7,964
Received 951 Likes
on
767 Posts
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
If your bolts were loose, I could see the jacking causing the gasket to get sheared, maybe.
Otherwise, I don't see a problem.
Otherwise, I don't see a problem.
#7
Senior Member
Thread Starter
Join Date: Mar 2010
Location: Alaska
Posts: 589
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee(XJ)
ok, appreciate the replies its not leaking thats why hehe i dont want to cause another issue while fixing another, think i'll just try it carefully
marc
marc
Trending Topics
#8
On the topic of motor mounts, I'm doing mine this weekend. Has anyone had issues with replacing them if they have an inch and a half tranny drop? I dropped it when I lifted it to get better angles on my drive shafts, but that causes the engine to pivot on the mounts. I'm a little worried that I'm gonna fight it now...
#9
CF Veteran
Join Date: May 2012
Location: Lost in the wilds of Virginia
Posts: 7,964
Received 951 Likes
on
767 Posts
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
I suspect you are going to fight it now.
That's usually the result when shortcuts are taken. The price gets paid down the road, sometimes.
If you find it a fight, you can always unbolt things and jack up the trans to its normal location. Pick up a cheap bottle jack from Harbor Freight to help out.
That's usually the result when shortcuts are taken. The price gets paid down the road, sometimes.
If you find it a fight, you can always unbolt things and jack up the trans to its normal location. Pick up a cheap bottle jack from Harbor Freight to help out.
#14
Senior Member
Thread Starter
Join Date: Mar 2010
Location: Alaska
Posts: 589
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee(XJ)
here is the old and the new one, the old one is from the drivers side the passenger side wasnt cracked at all but replaced both left and right at the same time. surprisingly i had no vibrations but the jerk from drive to reverse and back is much less.
Marc
edit: you would think by looking at the old one the weakest part is hte thin top area of the mount that they would make that stronger
Marc
edit: you would think by looking at the old one the weakest part is hte thin top area of the mount that they would make that stronger
Last edited by LadyKenai; 06-23-2018 at 08:25 PM.
#15
CF Veteran
Join Date: Mar 2016
Posts: 3,207
Received 602 Likes
on
512 Posts
Year: 96
Model: Cherokee (XJ)
Engine: 4.0
as the engine attempts to rotate the entire car, the way force is expressed upon LH vs RH mount is very different
both my XJ LH mounts completely toasted, RH fine
even on V-Engine vehicles, LH goes way before RH
might sound stingy, but every cent counts when it is your own
since applying this method, I have never replaced a RH mount