Is there a secret, besides lots of patience, for removing
the rear bumper from a MK2? The bolts are barely accessible
and can be turned only about 1/4 turn at a time. I’m not
sure if I am doing something wrong or if that’s just the way
it is. Additionally, one of the large bolts is frozen in
place and I am not sure if there is a way to remove it
without damaging the bumper. I have sprayed penetrating oil
around the rubber mount and the bolt head, but I am not
optimistic about the oil seeping into the threads. I may try
heating it, but that may lead to other problems.–
tedwone
Hesperia, California, United States
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In reply to a message from tedwone sent Tue 19 Jan 2016:
Ted,
Getting them off is always a struggle - don't think I've
ever removed a bumper without at least one spun captive nut or
the large bolt completely rusted into the rubber mount. Work
your way around and remove what you can, but then put them back
in/on, just a couple of threads. This will stop the bumper from
falling off and scratching itself or the paint while you are
fighting with the problem areas. I can’t remember for certain
if it was a Jag or not but I do remember cutting through a
rubber mount with a wire saw once.
Putting them back on isn’t exactly a walk in the park if you
are on your own either.
Andrew–
The original message included these comments:
and can be turned only about 1/4 turn at a time. I’m not
sure if I am doing something wrong or if that’s just the way
it is. Additionally, one of the large bolts is frozen in
place and I am not sure if there is a way to remove it
without damaging the bumper. I have sprayed penetrating oil
around the rubber mount and the bolt head, but I am not
In reply to a message from tedwone sent Tue 19 Jan 2016:
It’s always seemed to me that putting the bumper back on again, or
rather doing up the bolts, is one of those jobs that must have
been just as difficult in the factory–
Vince 1964 Mk2 3.4
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Right, bumper off. Took 15 minutes… easy. All the bolts came loose easily. Yes lots of inch-by-inch turning and a little fiddly, but with a little patience, no problem. When they were all loose, the bumper hung by itself and was easily removed.
However, the new bumper does not have captive nuts in the side mountings… how does one take those out of the old bumper and put them into the new one?
Right, they are not captive, they are called caged nuts, and if you have a little bendy metal, you can easily pry them out the old and drop them into the new using and allan key to support the nut from the back.
Rear bumper is back on. Took 20 minutes on my own. Not that big a deal - maybe I was lucky.
Welcome to the forum Barry.
I have a bumper handy so !
Four mounts in all, two at the rear and one each side. The mounts are threaded 1/2” UNF and accept. , of course, a 1/2” setscrew normally
1 5/16” long overall , these have a pointed lead in. The two rear mounts have the setscrew passing through the brackets on the bumper, best for this is a 3/4” AF ratchet spanned.
The side mounts have mounting plates attached to the rubber mounts after the rubber mounts are attached to the body
Now the fun starts !
The mounting plates attach to the bumper with, two each side, 3/8” UNF
setscrews, these screw into caged nuts that are free to slide in the brackets on the bumper, this for adjustment.
The “fun” is that , when undoing the 3/8” setscrews, this needs to be actioned first, the caged nuts are prone to turn.
If you are lucky the side mount rubbers are shot, if not much wrenching and $$$$.
Peter B
I recall one of our JL members named Kriss Motors did a write up on this where upon re-assembly, the rubber mount is somehow turned around and makes for a much easier installation. A search could find that article.
Rear Bumper removal.
An absolute pig of a job, to make matters worse my car had accident damage to the rear bumper before I bought the car. One mounting rubber was torn beyond use, an appeal on the forum where to get new rubbers I was advised they are the same as engine mounts. Getting the bumper off was very time consuming I was very careful when undoing the side bolts with the caged nuts to make sure they did turn in the bracket.I ground down an old opened flat spanner to get more turns on the the big nut that goes into the rubber mount. I also ran a tap through the caged nuts and a die down the side plate bolts to make it easier to start the reassembly.
I recently had my rear bumper removed after an accident in which the bumper was misshapen . It had to be removed, brought back to proper shape and rechromed. When the repair shop gave me copies of the final paperwork after repairs were complete (paid for by insurance as the fool that hit my car had valid insurance and admitted fault) I noticed on the parts list a line which said ‘engine mount.’ I asked what that was, and was told that part # is used as a rear bumper mount as well. I confirmed this wiith SNG Barratt, who supplied all parts used in the repair.
Just checking the spare parts catalogue and Jaguar list different numbers for the engine mount (C4794) versus the bumper mount (BD.9927) I would surmise that SNG have rationalised the listing in favour of the engine mount?
