The first number is a 3. Like I said 324......
It is a 1989 machine. Put the directional switch in forward and try turning all the way to the left-Does the machine still move? Now turn the wheel all the way to the right Will it move?

Sorry for the late reply. Thanks a lot for your help with this. Much appreciated.

Thanks a lot for your help it's much appreciated, will take a look. Thanks again !

If steering is tight in stationary, possible prob is in the pressure switch. switch is locate near orbitrol. 2 wire goes there, im sure you find it. if it doesent work, pump motor doesent start when you rotate steering wheel. micros top of the back tire just give info to logic what is back tire position. example if one micro broke, steering get stiff when u turn right and so on.....check motor brushes and clean the motor with pressure air too. sorry my bad english.

My guess is that the serial # starts with 324..... If so, you most likely have an issue with the steering switch(es) which are located in the rear compartment right above the steer axle.

Sorry don't know what that is but it doesn't look like a Linde serial number it should start with something on the lines of 91x

Serial number: 824903018615 there's a mark across the first number so it may be a 3 instead of an 8

Post the serial number as E15 means very little