Re: '56 Patrician Bendix Steering Ram

Posted by BH On 2012/6/27 14:43:01

Allow me to expand upon Ross' approach to seal replacement.

In servicing the Bendix power steering cylinder on-car, three of the four parts that make up the seal kit - illustrated in SC Vol. 30, No. 8 (p. 32) - may be dislodged (once the snap ring is removed) by simply pulling the piston rod outward from the cylinder. However, you might need to use a hooked tool on the outer lip of the dust seal to walk it out of the bore.

Then, to remove the critical seal that's deeply seated in the cavity WITHOUT damage to the piston or bore, which would result in a future leak, support the cylinder with a strap. Start the engine, turn the steering wheel to its full left stop, and hydraulic pressure will simply nudge the seal out. Although fluid won't come gushing out the end of the cylinder like a geyser, you should have something on the floor to catch the little bit that will be expelled.

Be sure to inspect the surface of the piston/rod for any pitting that would quickly tear up new seals. I've been lucky enough to dress mine up for reuse with no leaks. However, if that part requires replacement, then the cylinder will have to be removed, the end cut-off, and then re-welded - not something most would want to attempt at home.