Having both rounded off some hex bolts, and snapped some heads off when maintaining my own R107, I both feel your pain, and value you sharing your experience. Especially when it doesn't go according to plan. Makes me feel less bad.
I've worked on a few M110's over the years. I never use an impact on the hex bolts. I tap the allen key in and that loosens the bolts ,But.... if the heads have already been rounded out, I get a Torx bit and belt it into the bolt head. the allen bolts heads are actually soft and the torx bit grips nicely. A 10 mm spanner turns the torx to get it out, but I also mark one bolt because those bolts have one odd center so the damper goes back,as you mention in one place. . I have repaired a few of those pumps as the seals and bearings are easy to find here. The alloy housing is the part I remove rather than the bolts in the pump so i can heat a few before struggling with them. Looking at those alloy housing bolts on yours,,i'd say it's been off before. I keep a few spare 2nd hand housings just in case,so i can repair them at my leisure. They aren't a rare engine so plenty are laying about ( a mate has 6 or 7 because they are Djet versions. ) ,If the block is really sludgy,the side cover plates on the drivers side can come off and the water jacket cleaned out. I use new covers and nickle plated screws.
Thanks for your detailed and useful comments. Yes… I think with the benefit of hindsight, taking off the housing and heating might have given me a better chance - although even the machine shop struggled to get those bolts out and had to put an insert in one of the holes. I might try taking those side overs off - do they have a gasket….or are they sealed back on with sealant I wonder? Thanks again. Mike
Sometimes impact wrench is a bad idea ! Hand tools are more gentle with rusty bolts… (but it can also turn to a disaster ! 😂) you now have to clean all the water circuit as it must be like your pump everywhere ! Water hose, pressure washer can help…
Thanks for your comment. I think with the benefit of hindsight, there are a few things I could have done to make life easier (and less expensive!) In my experience, it has often been the case that the even force of the impact wrench= less chance of shearing. Even the machine shop struggled to get some of those bolts out. I think you are right about cleaning the water channels. My plan was to use the thermo product from evaporust - specifically designed for radiators. Mike
Hi thanks for your comment and good to hear from you. Sadly someone stole my welder a while back and I have been too mean to buy another one. I would be keen to try this method but in the event have given the whole kaboodle it to my backstreet machine shop man. Mike
You should have soaked the bolts in penetrating fluid and heat for a few days prior to. And you should have used hand tools to undo the bolts. MIG welder instead of drilling would be my first choice. Good luck!
Thanks for your comment. Yes you are right…I think with the benefit of hindsight, there are a few things I could done to make my life easier. I spent that off to a machine shop and even they struggled to get those bolts out. When I get a chance, I’d love to do a test and see whether a hand tool will snap a bolt before an impact wrench. I’ve always found the knocking action of the wrench, and the even pressure works well and avoid snapping bolts. Thanks again for your input. Mike
Thanks for your comment - yes I think there may have been a few extra things I could have done. I've never had bolts snap so easily and even the machine shop struggled to get some of those bolts out...we live and learn! Mike @@Project1989Mustang
Having both rounded off some hex bolts, and snapped some heads off when maintaining my own R107, I both feel your pain, and value you sharing your experience. Especially when it doesn't go according to plan. Makes me feel less bad.
Yes...a pain shared is a pain halved. So far, nothing beats the stress of the SL55 bleed nipple shearing. Boy that took a long time to fix! Mike
I've worked on a few M110's over the years. I never use an impact on the hex bolts. I tap the allen key in and that loosens the bolts ,But.... if the heads have already been rounded out, I get a Torx bit and belt it into the bolt head.
the allen bolts heads are actually soft and the torx bit grips nicely. A 10 mm spanner turns the torx to get it out, but I also mark one bolt because those bolts have one odd center so the damper goes back,as you mention in one place. . I have repaired a few of those pumps as the seals and bearings are easy to find here. The alloy housing is the part I remove rather than the bolts in the pump so i can heat a few before struggling with them. Looking at those alloy housing bolts on yours,,i'd say it's been off before. I keep a few spare 2nd hand housings just in case,so i can repair them at my leisure. They aren't a rare engine so plenty are laying about ( a mate has 6 or 7 because they are Djet versions. ) ,If the block is really sludgy,the side cover plates on the drivers side can come off and the water jacket cleaned out. I use new covers and nickle plated screws.
Thanks for your detailed and useful comments.
Yes… I think with the benefit of hindsight, taking off the housing and heating might have given me a better chance - although even the machine shop struggled to get those bolts out and had to put an insert in one of the holes.
I might try taking those side overs off - do they have a gasket….or are they sealed back on with sealant I wonder?
Thanks again.
Mike
Great, great video (despite your pains).
Thanks for your comment. These days I go in with low expectations of success...and this car rarely disappoints on that front! Mike
Sometimes impact wrench is a bad idea ! Hand tools are more gentle with rusty bolts… (but it can also turn to a disaster ! 😂) you now have to clean all the water circuit as it must be like your pump everywhere ! Water hose, pressure washer can help…
Thanks for your comment. I think with the benefit of hindsight, there are a few things I could have done to make life easier (and less expensive!) In my experience, it has often been the case that the even force of the impact wrench= less chance of shearing. Even the machine shop struggled to get some of those bolts out. I think you are right about cleaning the water channels. My plan was to use the thermo product from evaporust - specifically designed for radiators. Mike
Ni cuando se parezca a la bomba original con estructura metálica! A la actual de plástico! Cómo están los autos de hoy … desechables!! Saludos 🍀
Gracias por tu comentario. Mike
I feel your pain too! Try welding on a nut to the remains of the boys, the heat may help break them free. Cheers Jim
Hi thanks for your comment and good to hear from you. Sadly someone stole my welder a while back and I have been too mean to buy another one. I would be keen to try this method but in the event have given the whole kaboodle it to my backstreet machine shop man. Mike
You should have soaked the bolts in penetrating fluid and heat for a few days prior to. And you should have used hand tools to undo the bolts. MIG welder instead of drilling would be my first choice. Good luck!
Thanks for your comment. Yes you are right…I think with the benefit of hindsight, there are a few things I could done to make my life easier. I spent that off to a machine shop and even they struggled to get those bolts out.
When I get a chance, I’d love to do a test and see whether a hand tool will snap a bolt before an impact wrench. I’ve always found the knocking action of the wrench, and the even pressure works well and avoid snapping bolts.
Thanks again for your input.
Mike
Thanks for your comment - yes I think there may have been a few extra things I could have done. I've never had bolts snap so easily and even the machine shop struggled to get some of those bolts out...we live and learn! Mike @@Project1989Mustang
Are you sure that water pump didn’t come from the Titanic?
You are right - it looks like something from the bottom of a very salty ocean. Never expected to find so much rust in that cooling system....! Mike