I hope you're sitting down.....
April 07, steering box started to leak, so i got a recon one, fitted it, and went on holiday, got home 3 weeks later, and drove the truck, after about 200 miles the steering box started to leak again, from the big round 'lug' in the front of the box, rang the supplier, they sent out another one, and took the first one back, fitted the new one, another 500 miles later, this time the seal on the bottom shaft blew out.....
I then spoke to the technical man at the suppliers, he said he suspected the pump was over pressurising the system.... they would replace the box this time, but not again...... so, in order to eliminate the pump, i fitted a new one, so, afetr about 1000 miles, i noticed dampness on the very top of the box, where the big square plate bolts on.... very odd!! also slight dampness at the front of the pump.....
So, i took the top off the steerign box, and found a huge rubber seal around that plate.... no way that should leak... so i cleaned it all up, and refittted it....i have also now replaced the return pipe from the box to the reservoir in case that had a slight blockage.... and checked that the 'in' on the reservoir is ok.....
I have just topped the system back up, a driven it for a while, and there still seems to be slight seapage from the top of the box....
Any ideas before i scrap the truck
Thanks in advance!!