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911uk

Thermostat bolt broken

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Original source
9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHThermostat bolt broken

Leading reported evidence

Replace thermostat

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

Hi all, need some advice, replaced thermostat with a new one, and then had small leak, I think this was due to using blue loctite on threads and bunged up the holes to properly seat housing, So I removed housing again, and was using bolt to just clean out threads and sure enough a bolt head snapped off.

Thermostat bolt broken
Frequently discussed work

Clean threads, no leaks

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

lessons learned, don't use loctite on the bolts, it plugs up the holes and gives a false read when tightening down, use should tap out the holes to clean them out before putting in new bolts, and do use a torque wrench for 7.5 lbs - works like a charm with clean threads, no leaks.

Thermostat bolt broken
Read full discussion summary

Leading evidence: 'Replace thermostat' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'using blue loctite' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Clean threads, no leaks' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 9 captured posts examined · 0 partial discussions

Compare 4 other evidence results

using blue loctite

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that suspect a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suspected cause · Original poster

Hi all, need some advice, replaced thermostat with a new one, and then had small leak, I think this was due to using blue loctite on threads and bunged up the holes to properly seat housing, So I removed housing again, and was using bolt to just clean out threads and sure enough a bolt head snapped off.

Thermostat bolt broken

Clean threads, no leaks

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

lessons learned, don't use loctite on the bolts, it plugs up the holes and gives a false read when tightening down, use should tap out the holes to clean them out before putting in new bolts, and do use a torque wrench for 7.5 lbs - works like a charm with clean threads, no leaks.

Thermostat bolt broken

Recommend these guys

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I strongly recommend these guys.

Thermostat bolt broken

Replace bolts

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I will use a tap to clean out other 3 threads and replace all bolts with you ones

Thermostat bolt broken
Frequently discussed actions (10)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Clean threads, no leaks

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

lessons learned, don't use loctite on the bolts, it plugs up the holes and gives a false read when tightening down, use should tap out the holes to clean them out before putting in new bolts, and do use a torque wrench for 7.5 lbs - works like a charm with clean threads, no leaks.

Thermostat bolt broken

Recommend these guys

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I strongly recommend these guys.

Thermostat bolt broken

Replace bolts

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I will use a tap to clean out other 3 threads and replace all bolts with you ones

Thermostat bolt broken

Replace thermostat

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

Hi all, need some advice, replaced thermostat with a new one, and then had small leak, I think this was due to using blue loctite on threads and bunged up the holes to properly seat housing, So I removed housing again, and was using bolt to just clean out threads and sure enough a bolt head snapped off.

Thermostat bolt broken

Use blue loctite

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Hi all, need some advice, replaced thermostat with a new one, and then had small leak, I think this was due to using blue loctite on threads and bunged up the holes to properly seat housing, So I removed housing again, and was using bolt to just clean out threads and sure enough a bolt head snapped off.

Thermostat bolt broken

Use bolt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Hi all, need some advice, replaced thermostat with a new one, and then had small leak, I think this was due to using blue loctite on threads and bunged up the holes to properly seat housing, So I removed housing again, and was using bolt to just clean out threads and sure enough a bolt head snapped off.

Thermostat bolt broken

Use reverse drillbit

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I went through something similar...my approach was to drill a hole into it and then use a reverse drillbit to unscrew it.

Thermostat bolt broken

Use should tap out the holes

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

lessons learned, don't use loctite on the bolts, it plugs up the holes and gives a false read when tightening down, use should tap out the holes to clean them out before putting in new bolts, and do use a torque wrench for 7.5 lbs - works like a charm with clean threads, no leaks.

Thermostat bolt broken

Use tap

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I will use a tap to clean out other 3 threads and replace all bolts with you ones

Thermostat bolt broken

Use top quality adjustable spanner

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Welding would be best but I've ,more often than not, been successful at removing snapped bolts by filing Two opposing flats on the exposed bolt and using a top quality adjustable spanner on it.

Thermostat bolt broken
Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

using blue loctite

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suspected cause · Original poster

Hi all, need some advice, replaced thermostat with a new one, and then had small leak, I think this was due to using blue loctite on threads and bunged up the holes to properly seat housing, So I removed housing again, and was using bolt to just clean out threads and sure enough a bolt head snapped off.

Thermostat bolt broken
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T163944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi all, need some advice, replaced thermostat with a new one, and then had small leak, I think this was due to using blue loctite on threads and bunged up the holes to properly seat housing, So I removed housing again, and was using bolt to just clean out threads and sure enough a bolt head snapped off. its the lower left, about 3mm sticking out but can't get a vice grip around it.- area is too tight. I'm thing getting someone to weld a bolt to it and then unthread> think that is less evasive than drilling into aluminium bolt and there is still some bolt sticking out. Any advice? anyone know a mobile welding service to come out to farnham Surrey to do quick weld? Here is pic of bolt. I will use a tap to clean out other 3 threads and replace all bolts with you ones thanks

POST 2Original post

If you can weld a nut on it, that is definitely the way to go.

POST 3Original post

Welding would be best but I've ,more often than not, been successful at removing snapped bolts by filing Two opposing flats on the exposed bolt and using a top quality adjustable spanner on it. If it doesn't work (and it does look tight on space) the welding option is still open to you.

POST 4Original post

I would be trying some release agent and even a little heat first. And then trying to turn it our with a suitable gripping wrench. There seems to be fair bit of metal corrosion below as well. Is corrosion part off the problem?

POST 5Original post

Hi, I strongly recommend these guys. I use them regularly for welding jobs on both car and aircraft parts. They always complete the job within a day or two and their prices are so keen that I never bother breaking out my own MIG welder anymore. https://ashbywelding.co.uk/ They are in Church Crookham, so I imagine they would be happy to come out to Farnham.

POST 6 / ORIGINAL POSTEROriginal post

Thanks for response Mervo, the bolt has already been out once, so no rust or corrosion issue, only a bit tight and missing and head! Not enough room to get a vise grip in there unfortunately

POST 7Original post

I went through something similar...my approach was to drill a hole into it and then use a reverse drillbit to unscrew it. worked like a treat!

POST 8 / ORIGINAL POSTEROriginal post

thanks for the recommendation Marin - they are only a mile away, perfect!

POST 9 / ORIGINAL POSTEROriginal post

ok, got a hold of Peter Ashby, and he came out welded a nut to the nub of the bolt, worked after heating the block a bit. He came out on time, and fair price, and fixed it, would have been a challenge if this didn't work. lessons learned, don't use loctite on the bolts, it plugs up the holes and gives a false read when tightening down, use should tap out the holes to clean them out before putting in new bolts, and do use a torque wrench for 7.5 lbs - works like a charm with clean threads, no leaks.

This is a source reference. Confirm exact model applicability in the original material.