For the Nth time, a broken wheel stud

**wowiesy** · November 28th, 2012 08:02 PM

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** · November 28th, 2012 08:17 PM

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

**Syuryuken** · November 28th, 2012 08:30 PM

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** · November 28th, 2012 09:08 PM

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** · November 28th, 2012 09:08 PM

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** · November 28th, 2012 09:21 PM

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** · November 28th, 2012 09:53 PM

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** · November 29th, 2012 01:06 AM

thanks guys.. will try that anti sieze... and also the torque wrench...

ang weird lang kasi... sa mga naging service ko (revo, innova, ranger) di naman nagkakaganito.... now na subaru... dito pa nagkakaganito...

i somehow get the idea of using a torque wrench.. but.. it is quite rare to see torque wrench being used sa pag change lang ng tires / spares...

so mukhang kailangan na ilagay torque wrench / anti siezing agent sa car as regular tool box stuff...

**wowiesy** · November 29th, 2012 03:02 AM

Originally Posted by 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.

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...