For the Nth time, a broken wheel stud

[wowiesy]

We have a Subaru Hatchback Impreza...

today.. this is the 3rd (or 4th na ata) time that a wheel stud (yung bolt na kinakapitan ng magwheels) break.. as in break into two....

tipong tatanggalin mo pa lang yung nut (to change a flat).. mapuputol yung bolt...

costs about 800 to have it replaced sa casa... and at least a half day.... minsan pati yung onboard computer (for what reason I can't comprehend) nagkaka problem pa pagkatapos nila palitan yung stud....


any of you guys here experience the same thing? and how to avoid this?

we tried our best na to really get the nut as careful as we can... pero ganun pa rin....

[dr. d]

seems to me you got a metallurgical problem with the spares.. mebbe the entire shipment is affected.. what does casa say?

[Syuryuken]

over tightened yan bro or yung karaniwang problema ng mga taxi driver na babad sa init ng araw then biglang umulan lumulutong yung mga stud.

[Gumusut_Amige]

over tightened yan bro or yung karaniwang problema ng mga taxi driver na babad sa init ng araw then biglang umulan lumulutong yung mga stud.

i'll go with this... kasi kahit sa truck nangyayari ito dahil sa paghigpit nila ay may gamit pang extension na tubo.

bro, is it happening to the same tire/stud location?

[oj88]

Three thoughts:

1. These studs can usually take a lot of abuse. I would also think that it may be due to a quality issue. Or...
2. The studs may have been inadvertently over-tightened. Make sure that they're properly torqued to specifications.
3. Still, you may want to consider applying a reasonable amount of anti-seizing compound on the stud to keep the wheel nut from sticking.

[Type 100]

Get a torque wrench. Most lugnuts need just 98-105 Nm of torque to tighten to spec - any more and the lug bolts will snap. That's the scientific way of going about it. If the studs are still snapping after wrenching the lugnuts to spec, you have bad metallurgy to blame.

For purposes of tightening lugnuts, a micrometer torque wrench is better, despite being more expensive. The wrench will let you know by an audible click that your preset torque has been reached - no need to keep looking at a beam while you're tightening.

PhP1500 for a torque wrench might be expensive to you now, but if it will let you avoid breaking lug bolts in the future I'd call it an investment. Besides, it's a tool - it should be good for years.

[yebo]

question lang. is the nut free from the broken piece of bolt or is it seized (kinalawang dun sa bolt)?

if it is free then overtorque yan. sabihan mo si conan huwag masyado higpitan pag nagpalit ng gulong. also dapat as much as possible e pantay ang torque kasi kung mas mataas ang torque sa isang nut e yung nut na yun ang magdadala ng halos buong load at yung ibang nut e wala halos load at yun ang mapuputol.

pag seized then you need to use some anti-seize compound like NeverSeize or CopaSlip. kung wala ka makita kahit ordinary water resistant grease pwede na but you will need to apply every time you loosen the nut.

[wowiesy]

over tightened yan bro or yung karaniwang problema ng mga taxi driver na babad sa init ng araw then biglang umulan lumulutong yung mga stud.

although I can understand yung portion na problem ng mga taxi driver... pero assumed yan sa car na babad nga sa labas buong mag hapon... ang nangyari kanina.. was parked at the mall.. after the mall, on the next stop... yun na flat.. nung tinatanggal yung wheels.. ayun.. naputol...

bro, is it happening to the same tire/stud location?

sa awa ng diyos, iba ibang gulong (side) ang nangyayari.. di pa naman naulit on the same side...

question lang. is the nut free from the broken piece of bolt or is it seized (kinalawang dun sa bolt)?

yung last naalala ko, the stud was broken into 2... nakakapit pa sa nut yung kaputol na stud... that was courtesy of this vulcanizing shop boy who was too eager to do his job... pinagsasabihan na while he was working on it.. sige pa rin.. di ko na nga babalikan yung vulcanizing shop na yun eh... suki pa naman yun sana (on the other vehicles)...

pag seized then you need to use some anti-seize compound like NeverSeize or CopaSlip. kung wala ka makita kahit ordinary water resistant grease pwede na but you will need to apply every time you loosen the nut.

saan po mabibili yung NeverSeize / CopaSlip? ACE? Handyman? Concorde? sa Blaze meron kaya?


weird lang talaga eh.. sa ibang sasakyan di ko pa to na encounter.. dito lang talaga sa Subaru...

[wowiesy]

May nakita ako lithium grease. Water proof nakalagay sa spray can... Pwede ba yun? So far ala ako mahanap na neverseize.

[oj88]

May nakita ako lithium grease. Water proof nakalagay sa spray can... Pwede ba yun? So far ala ako mahanap na neverseize.

No, don't use any other types of grease. It should be capable of handling high temperature. Typically, copper grease is used to serve as both lubricant and anti-seizing compound.

I still have this lying in the garage that I use on my bikes' brake pads (back side), guide pins and anywhere it requires an anti-seize grease. I've had it for more than 10 years I think that I've forgotten where I bought it from.

[juliancohen]

Definately not a Subaru issue, but an overtightening issues. It has happened to me twice, neither time on my Subaru, but both times by the same mechanic. The mechanic was lazy and put pipe on the end of the tire wrench to make it easy to tighten, but in doing that, it becomes very easy to over tighten. I now NEVER allow a pipe to be used when tightening lug nuts.

[dr. d]

Definately not a Subaru issue, but an overtightening issues. It has happened to me twice, neither time on my Subaru, but both times by the same mechanic. The mechanic was lazy and put pipe on the end of the tire wrench to make it easy to tighten, but in doing that, it becomes very easy to over tighten. I now NEVER allow a pipe to be used when tightening lug nuts.

right!
pang-truck lang ang breaker bar.

[StockEngine]

right!
pang-truck lang ang breaker bar.

breaker bar is only for loosening.

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[Vodka]

i rotated my tires just a few minutes ago. breaker bar to loosen. but i used torque wrench to tighten. manual says 80 ft lbs

even on my bike i use a torque wrench on the important components

yeah beware of those tire place folks who work on trucks

also take note that the torque rating is for dry unlubricated nuts. if you use grease or anti-seize the torque will be different

[gearhead000]

i rotated my tires just a few minutes ago. breaker bar to loosen. but i used torque wrench to tighten. manual says 80 ft lbs

even on my bike i use a torque wrench on the important components

yeah beware of those tire place folks who work on trucks

also take note that the torque rating is for dry unlubricated nuts. if you use grease or anti-seize the torque will be different

I used to tighten my lug nuts to around 75 ft lbs. Yun kasi nabasa ko dati. So pwede ko pa pala itaas sa 80 ft lbs. Gamit ko ay yung manual lang na bar style gauge.

Reading from the 1st page I was waiting for someone to comment on the use of the anti-seize on lug nuts or in fact even on other bolts. Mag-iiba ang torque pag nagkaroon ng lubrication.

[jaggerx3]

breaker bar is only for loosening.

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May iba ginagamit din yata yan for tightening

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[dr. d]

breaker bar is only for loosening.

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i have lived long enough, to see them tire guys use the bar, loosening as well as tightening.

[yebo]

meron anri-seize copper grease sa lazada.

Carplan/Carlube Mullti-Purpose Grease Copper 2g | Lazada PH

i still have my plastic bottle of copaslip. i need to remind myself to do the everest lug nuts one of these days.

[MR_BIG18]

me too, i going to subaru nxt month to have it fixed, buwisit yan servitech bicutan

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[Wh1stl3r]

Yung mga pneumatic impact wrench sa mga service shops sobrang lakas ng torque. Dapat sa lug nut removal lang ginagamit kung walang setting sa tamang torque yung gun.

Minsan pa hindi nila kinakamay yung nut para lumapat sa thread bago gamitan ng impact wrench. Doon nagkakaroon ng stripped threads minsan. Best still to have it hand tightened with a torque wrench.