Having had the success of getting the Oxford moving again, It was time for me to repay a favour to another friend who has helped me with car related activities.
Some of you may remember Richard, the chap who successfully guided me through the unknown world of GSA servicing.
He had procured rear spheres for the GS Pallas he owns, and asked me to help him fit them.
On the GS/A the front spheres are apparently a fairly simple process to change ( and one I intend to experience shortly). The rears, however are much more involved.
He had the car up on stands, and the LHM system depressurised.
He also showed me his latest invention – the pipejack!
It uses a length of steel tubing to increase the lifting range, so the spheres can come out past the rear arm.
We started off by having a look at the job –
Above, you can see the sphere on the left, the 8mm union for the high pressure pipe into the strut/cylinder (to right of the sphere) and the trailing arm and caliper that we had to work around.
At the other end are the bumpstops and the securing pin that hold the bottom of the strut in.
With this and the bumpstops removed, we set about getting the sphere and strut out.
We undid the 8mm union, and attempted to compress the strut (making it shorter and easier to lift out).
It was at this point we realised that there was still some residual pressure in the system – waggling the high pressure pipe until it unseated from the strut resulted in a small fountain of LHM and a strut that was easy to compress.
Next was removing the return pipe from the gaitor, and undoing the 11mm bolt that holds in the strut retaining clip.
We managed to crack off the sphere in situ and remove it separately from the strut. This was done as we were struggling to get it out past the arm (the other side proved this to be possible!)
With the strut removed, we cleaned it up and inspected the gaiter and seals for damage. Additionally we swapped the seal in the high pressure inlet for a new one.
The sphere and strut were joined and refitted – the hardest task of the entire job was ensuring the high pressure pipe union was aligned properly, to avoid stripping the threads in the aluminium strut.
The locating pin and bumpstops were refitted, along with the strut retaining bracket and 11mm bolt.
After a short break, we moved round to the LHS and set to work.
In this instance, we were able to get the rear arm high enough up to remove the strut and sphere as one unit.
Again, cleaning, checking and new sphere fitment occurred.
Once reinstalled it was time to repress