Broke bolt in lower unit

[taylorman]

I broke off one of the (4) bolts on the water pump housing on a Johnson 15hp LU. There is about 1/4" of stud exposed. Whats the best way to remove the broke bolt? Thanks

 

[ezeke]

Re: Broke bolt in lower unit

Heat the remaining bolt with a propane torch - do it several time and let it cool. Vise-grips will then remove it.

 

[Incorrigible]

Re: Broke bolt in lower unit

Saturate the protruding stud with break away or tread cutting oil. Penetrating oil of any kind will help. GOOD LUCK. These can be very difficult (just broke off a thermostat housing bold myself)

 

[wilde1j]

Re: Broke bolt in lower unit

Oil won't cut it. Heat, as pointed out, is the trick.

 

[Chris1956]

Re: Broke bolt in lower unit

Heat as ezeke recommends. Then remove the heat and spray with penetrating oil. As the bolt cools it should suck some oil in.

 

[bktheking]

Re: Broke bolt in lower unit

You'll probably have to drill and tap to the next size, steel in aluminum is a PITA to get out.

 

[Chinewalker]

Re: Broke bolt in lower unit

Whatever you do, DO NOT USE AN E-Z-OUT. Nothing easy about them!!