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Removing frozen bolts???
I'm finally replacing the head gasket on my 95 SW1 SOHC because I'm now
having to add 1/2 gallon/day in water-(green)antifreeze. No "milkshakes" just a good green leak from the front and back of the engine. This is a by-the-book (Haynes) job. I can't locate a FSM. The 10mm bolts holding the AC compressor bracket to the head are frozen. I've tried liquid wrench, a little heat from a propane torch, impact driver (hammer). No luck. I'm also having problems getting the harmonic balancer pulley bolt off too. Yes, i've wedged the pulley and tried a big torque wrench. The book says 256lft/lbs. Feels like 500. This is a counterclockwise removal. yes?? Depression is starting to set in. What other tools or gods do I need??? Help!!! Jackcat in Tucson. |
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#4
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I get a product called Kroil from www.kanolabs.com (only available
mail-order and internet). I buy a gallon at a time and thoroughly saturate all bolts to be removed. Rarely have lost a bolt that way. The harmonic balancer can be a bit of a pain to remove but most often just needs a serious impact wrench. I had one for $40 that worked ok but the $200 thunder gun (1/2" drive) is amazing. I gave up the propane torch years ago. I have a oxy/acet set now but did use mapp gas in a turbo torch for a while. Far better heat output. Aluminum has much better heat flow than steel so any heat you put in one area tends to flow away unless you use a lot of heat in a small area. As with any repair, a general knowledge of how much force you can exert on a bolt before it breaks is often learned by experience. Sometimes just cracking it loose is only half the battle. Keep adding a good penetrating fluid and working the bolt back and forth to remove it without stripping the aluminum threads. "JacktheCat Turkey" > wrote in message ... > I'm finally replacing the head gasket on my 95 SW1 SOHC because I'm now > having to add 1/2 gallon/day in water-(green)antifreeze. > No "milkshakes" just a good green leak from the front and back of the > engine. > This is a by-the-book (Haynes) job. I can't locate a FSM. The 10mm bolts > holding the AC compressor bracket to the head are frozen. I've tried > liquid wrench, a little heat from a propane torch, impact driver > (hammer). No luck. > I'm also having problems getting the harmonic balancer pulley bolt off > too. Yes, i've wedged the pulley and tried a big torque wrench. The book > says 256lft/lbs. Feels like 500. This is a counterclockwise removal. > yes?? > Depression is starting to set in. > What other tools or gods do I need??? > Help!!! > > Jackcat in Tucson. > |
#5
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The aluminum had a chemical reaction ( galvanic corrosion ) to the steel and
seized. Try to see if you can get some ammonia to flood the seized bolt ( in place of a liquid wrench type product ); this should neutralize the reaction and free the bolt. Will do a lot less damage than brute force method. Laz "Oppie" > wrote in message news:1107214851.5af1be8f3f8432ab7ed6b408c2405d21@t eranews... > I get a product called Kroil from www.kanolabs.com (only available > mail-order and internet). I buy a gallon at a time and thoroughly saturate > all bolts to be removed. Rarely have lost a bolt that way. > The harmonic balancer can be a bit of a pain to remove but most often just > needs a serious impact wrench. I had one for $40 that worked ok but the $200 > thunder gun (1/2" drive) is amazing. > I gave up the propane torch years ago. I have a oxy/acet set now but did use > mapp gas in a turbo torch for a while. Far better heat output. Aluminum has > much better heat flow than steel so any heat you put in one area tends to > flow away unless you use a lot of heat in a small area. > As with any repair, a general knowledge of how much force you can exert on a > bolt before it breaks is often learned by experience. Sometimes just > cracking it loose is only half the battle. Keep adding a good penetrating > fluid and working the bolt back and forth to remove it without stripping the > aluminum threads. > > "JacktheCat Turkey" > wrote in message > ... > > I'm finally replacing the head gasket on my 95 SW1 SOHC because I'm now > > having to add 1/2 gallon/day in water-(green)antifreeze. > > No "milkshakes" just a good green leak from the front and back of the > > engine. > > This is a by-the-book (Haynes) job. I can't locate a FSM. The 10mm bolts > > holding the AC compressor bracket to the head are frozen. I've tried > > liquid wrench, a little heat from a propane torch, impact driver > > (hammer). No luck. > > I'm also having problems getting the harmonic balancer pulley bolt off > > too. Yes, i've wedged the pulley and tried a big torque wrench. The book > > says 256lft/lbs. Feels like 500. This is a counterclockwise removal. > > yes?? > > Depression is starting to set in. > > What other tools or gods do I need??? > > Help!!! > > > > Jackcat in Tucson. > > > > |
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