Si aad u go'aamiso lawska saxda ah ee codsigaaga gaarka ah, waxaad u baahan doontaa inaad tixgeliso afar arrimood oo kala duwan: nooca kursiga, cabbirka dunta, garoonka dunta iyo nooca wiishka.
1.Nooca Kursiga
Qaabka fadhiga ayaa ah meesha uu lawska luguhu dhab ahaantii xidhiidh la leeyahay dusha giraangiraha.Sida hore loo soo sheegay, noocyada kursi ee ugu caansan waa fidsan, wareegsan, iyo koonical.Si gaar ah, 60 digrii lowska lugaha koonka ah waa naqshad aad u caan ah lowska lugaha.Kursiga qoobka leh waxa uu caawiyaa in uu dhexda u galo giraangiraha marka lawska lugaha la adkeeyo.Natiijo ahaan, waxay aad ugu dhowdahay inaad ku dhameysato qaybo si fiican isku dheeli tiran u leh marka loo eego kursiga Mag ama Shank.
Dhanka kale, 45 kursi oo koone ah ayaa loo isticmaalaa in badan oo giraangiraha wareega ah.Dhab ahaantii, waa inaadan waligaa u isticmaalin 45 digrii lowska lugaha OEM giraangiraha oo leh kursi 60 digrii ah.
2.Xajmiga xadhigga
Si aad u ogaato dunta lugaha ee aad ugu baahan tahay gaadhigaaga, waxaad u baahan tahay inaad go'aamiso cabbirka dunta.Si taas loo gaaro, marka hore cabir dhexroorka dibadda ee dunta istaroogga gaariga.Way adag tahay in la helo cabbirro sax ah iyadoo la adeegsanayo cabbir cajalad ah.Taa baddalkeeda, jaanisyada dhijitaalka ah ayaa loo isticmaalaa si loo go'aamiyo cabbirrada dunta.Dhexroorka dunta ugu caansan ee looska lugaha iyadoo la isticmaalayo cabbirrada SAE waa 7/16, 1/2, 9/16, iyo 5/8 inches.
3. Dusha Xareed
Si loo go'aamiyo garoonka, waxaad u baahan tahay inaad xisaabiso tirada dunta oo ay weheliyaan qaybta hal-inch ee urka.Isticmaal cabirka cajalad si aad u jarto hal inch oo xariiq ah oo gacanta ku tiriso tirada dunta.Meelaha ugu caansan ee looska lugaha ee SAE waa 7/16 "-20, 1/2" -20, 9/16 "-18, 5/8" -18, iyo 5/8 "-11
4.Nooca Wrenching
Marka xigta, waxaan u baahanahay inaan go'aamino nooca furaha.Nuska lugaha ee laba geesoodka ah ayaa ah kuwa ugu badan, labada gacmood iyo furayaasha si fudud ayaa loo rakibi karaa ama looga saari karaa.Iyadoo ay tani u sahlayso makaanik deegaankaaga ama dukaanka taayirka inay ka saaraan taayirradaada, waxay ka dhigaysaa kuwo aad ugu nugul tuuganimada.Haddii aad ka welwelsan tahay xatooyo, waxaan kugula talineynaa inaad ka fiirsato iibsashada qufulyada taayirrada.

Labada darawalada spline iyo hex key nuts waxay u baahan yihiin furayaal gaar ah ama qalab si loo rakibo loogana saaro.Looska lugaha ee loo yaqaan 'spline drive lug nuts' waxaa loo isticmaalaa in lagu waafajiyo qaab taayir gaar ah ama si loo beddelo muuqaalka guud.Taas beddelkeeda, ujeedooyinka amniga, waxaad isticmaali kartaa looska lugaha ee loo yaqaan 'spline drive lugnut' giraangire kasta - oo badanaa loo yaqaan quful giraangireed.

Si kastaba ha ahaatee, looska furaha ah ee hexagon ayaa bixiya muuqaal siman waxaana caadi ahaan loo isticmaalaa taayirrada leh godadka yar yar si lowska uu si fiican ugu habboon yahay.Faa'iidada ugu weyn ee noocyada noocan ah ee lawska lugaha ayaa ah in aysan wax dhaawac ah u geysan dusha sare maadaama aysan la soo xiriirin meel ka baxsan marka la rakibo ama la saaro.