radiator support

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Cublife
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radiator support

Postby Cublife » Mon Feb 16, 2015 6:07 pm

On my 52 cub, oil was leaking from the steering gear box, so I took the cap loose to replace the gasket around the steering column. When I lifted the cap the water from the radiator drained through that opening. Since the steering gear housing is part of the lower radiator casting, is there any opening between the two parts of the casting or has a break occurred between the two parts? I recently acquired this cub and don't know much about its history, but there was very little antifreeze in the water that drained out. Could water freezing have broken that casting?

On my 48 cub the intake valves seem to be stuck open (possibly due to ethanol in the gas). The exhaust valves seem to be moving as they should. Is there any way to free up the intake valves without pulling the head?

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Barnyard
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Re: radiator support

Postby Barnyard » Mon Feb 16, 2015 6:52 pm

Many steering gear boxes have water in them. Rain and condensation run down the steering shaft and gets past the seal at the bottom. Drain the gear box and replace with 80/90. Unless your radiator is running dry then I would rule out a problem there.
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RaymondDurban
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Re: radiator support

Postby RaymondDurban » Mon Feb 16, 2015 6:56 pm

For the water draining out through the steering box, sounds like a freeze crack, although this would be the first one I've heard of that cracked in this manner.

For the stuck intake valves, if they are mildly sticking, you can spray penetrant into the cylinder through the spark plug holes and work them back down with a brass punch. You must use extra care because this is a good way to bend the valve. Also remove the tappet cover from the side of the engine and work them from inside that cavity.

Cublife
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Zip Code: 80504

Re: radiator support

Postby Cublife » Mon Feb 16, 2015 7:29 pm

Barnyard wrote:Many steering gear boxes have water in them. Rain and condensation run down the steering shaft and gets past the seal at the bottom. Drain the gear box and replace with 80/90. Unless your radiator is running dry then I would rule out a problem there.


You are right about the water collecting in the gear box, however when I put water in the radiator it drains directly out through the gear box. And not slowly, either.

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Barnyard
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Re: radiator support

Postby Barnyard » Mon Feb 16, 2015 7:37 pm

Cublife wrote:when I put water in the radiator it drains directly out through the gear box. And not slowly, either.

Ouch, time to replace that bolster.
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staninlowerAL
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Re: radiator support

Postby staninlowerAL » Mon Feb 16, 2015 8:35 pm

RaymondDurban wrote:For the stuck intake valves, if they are mildly sticking, you can spray penetrant into the cylinder through the spark plug holes and work them back down with a brass punch. You must use extra care because this is a good way to bend the valve. Also remove the tappet cover from the side of the engine and work them from inside that cavity.

I have used a wooden dowel or screwdriver through the spark plug hole after spraying the penetrant and rotating the valve with vicegrip needlenose pliers clamped on the end of the valve stem accessabe after removing the tappet cover.


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