Ka'idar aiki mai kyau na famfon birki shine kamar haka:
Famfon birki wani muhimmin bangare ne na birkin chassis wanda ke cikin tsarin birki, babban aikinsa shine tura famfon birki, da kuma ganga na birki mai gogayya. A hankali a hankali sannan a tsaya. Bayan an danna birkin, babban famfon yana haifar da matsin lamba don danna man hydraulic zuwa ga famfon sub-pump, kuma piston da ke cikin famfon sub-pump yana fara motsawa a ƙarƙashin matsin ruwa don tura famfon birki.
Birkin hydraulic ya ƙunshi famfon birki na musamman da tankin ajiyar mai na birki. An haɗa su da fedar birki a gefe ɗaya da kuma bututun birki a ɗayan gefen. Ana adana man birki a cikin famfon birki, kuma akwai hanyar fitar mai da kuma hanyar shigar mai.
1. Lokacin da direban ya taka fedar birki, piston na babban famfon ya matsa gaba don rufe ramin wucewa. Sannan, matsin mai ya taru a gaban piston. Sannan matsin mai ya koma famfon birki ta hanyar bututun;
2. Idan aka saki fedar birki, sai a mayar da piston na famfon farko a ƙarƙashin tasirin matsin mai da kuma maɓuɓɓugar dawowa. Bayan matsin tsarin birki ya faɗi, man da ya wuce kima zai koma cikin gwangwanin mai;
3, birki mai ƙafa biyu, tukunyar mai daga ramin diyya zuwa gaban piston, ta yadda man da ke gaban piston ɗin ke ƙaruwa, sannan a cikin birki, ƙarfin birki yana ƙaruwa.
