Me whai ana hohonu i raro i te whenua ngā teihana hiko wai nui, he tino kaha te pēhanga o ngā toka.YT29Ahe pono te mahi i konei nā te meate kaha pānga nui me te tautoko waewae-hau pumau, he mea e tika ana mō te keri tonu i te karāhe mārō me te karāhe.

 

Ka whakaitihia te taumahatanga o te pūwero hiko nā te iti o te hau e whakamahia ana, he mea nui tēnei ina mahi ana i ngā papa hiko wai tawhiti, teitei rānei.

 

Me te mahi toi tino ātaahua i whakamanahia e YT29A, kawiri toka waewae haukua whakaritea kia rite ki te hanganga keri toka tino uaua me te taumata mahi hou. Ko tētahi āhuatanga matua ko tana pūnaha whakamātao matatau, ka taea te whakaiti i te wiri kaha e tukuna ana ki te kaiwhakahaere i roto i ngā tukanga keri roa. Ehara i te mea ka whakapai ake tēnei hoahoa ergonomic i te whakamarie mahi a te kaiwhakahaere anake; ka whai hua tika hoki ki te whakapai ake i te haumaru o ngā kaimahi me te ahunga whakamua i roto i te mahi keri, te whakaiti i te ngenge o te kaiwhakahaere me te mōrearea o te hapa tangata i roto i ngā tukanga keri toka tika. Hei tāpiri, kua āta hangaia te hanganga o roto o te taputapu keri hei whakahaere i te tiaki i roto i ngā āhuatanga taiao kino. Ko ngā wāhanga pēnei i te piston me te chuck kua hangaia kia tere te uru atu me te whakakapi, kia iti ake ai te wā kore utu.

 

Ahakoa he maha ngā wā ka pāngia te mīhini keri waewae hau YT29A e te puehu toka kirikiri me ngā taiao haumākū nui e kitea ana i roto i ngā ana i raro i te whenua, mā te whakamahi i ngā koranu pakari me te ātete-waikura puta noa i te tinana ka roa ake tōna ora mahi. Mā te whakakotahitanga o te kaha, te whai huatanga, me te hoahoa e aro ana ki te kaiwhakamahi, ka waiho te mīhini keri waewae hau YT29A hei taputapu ehara i te mea he taputapu anake, engari he āwhina pai hoki mō ngā mahi keri toka nui, e āwhina tika ana i ngā kaupapa keri uaua kia haere tonu i runga i te mahere me te tahua, kia tere ake ai, kia haumaru ake ai, kia pono ake ai hoki ngā mahi hanga keri toka.