G'day HOLTGREY ....
Yes, it looks like a nightmare BUT with the proper tools and a bit of thinking, its quite easy, whatever you do, don't lose your cool.:Banghead
Release HYD pressure from system before you do anything else, grab a slab of beer very very cold
!!!!
Take a deep breath and away you go .....
Remove the four or five hoses from the top, I used coloured zip ties to mark the hoses to the fittings or ports that it comes off.
I used crowfoot open ended 3/8 spanners with a long 3/8 extension with a 3/8 45 cm breaker bar, you are virtually working from directly above the upper section of the joint. Perpendicular !!
With all hoses off (marked), remove the tang that locates or keeps the top half of the joint working with the upper structure as the excavator turns round and round.
Next,. crawl under the machine and remove the round bash plate held by 3 bolts if memory serves me correct.
You will see the lower half of the joint with steel HYD lines coming off the lower half.
You will also see that deep in there would be 3 bolts that hold the lower half of the joint to the lower structure of the machine (track frame), loosen the bolts BUT do not remove until
you have removed all the steel HYD lines or at least get it out of the way, now done be lazy, loosen the lines at both ends and remove all the clamps that hold the steel lines in place.
Why? you may ask ..... because the SWIVEL is heavy and if you are removing this by yourself, like I did, you want it to come out without a fight, which you will have if you have stiff steel
lines hanging around .... I kept the lines clear out of the way by using good old zip ties !
.
Plus when you installing it, you don't want to be fighting with it with one hand and trying to install the bolts at the same time ...unless you are popeye !
After you have removed the joint, mark the top half to the bottom half with etching pen may permanent marks , you don't want to lose these marks even if you wash it in the parts wash !.
The SWIVEL is three pieces with a plate / flange sandwiched in between, note this plate has an "O" ring on the inside also, REPLACE this "O" ring also !.
MARK this plate also to install it in the same position to the other TWO pieces. You will understand why these marking is so so so important when it comes to
installing the locating tang that you removed in the beginning !!!!.
Pull the SWIVEL apart and replace the TEFLON seals, You will have to use HYD press to remove and install the pieces back together again as per the locating marks that you etched.
The new TEFLON seals ( I think) are very very very stiff and the upper half will be very difficult to install unless you have a HYD press to push it into the bore / housing, LUBE it very well.
There are 6 or 7 seals that separate the ports , this is where your problem lies I suspect and you wish !!!
.
Install the SWIVEL back and jobs done ! Goodluck .... you will be proud of yourself after this job and the problem goes away !
Abdul ...
abdul k
still no luck with your thread.Its the access to the joint that looks realy bad .My job is on a ex55ur maybe same as yours . afew pointers would be good
thanks
