Hatimin ƙarshen hatimin mahaɗin a cikin jerin gwanon shuka kwalta yana ɗaukar nau'in hatimi mai hade, wanda ya ƙunshi yadudduka da yawa na hatimi kamar hatimin roba da hatimin ƙarfe. Ingancin hatimin yana shafar aikin gabaɗaya na duk shukar hadawa.

Saboda haka, yana da matukar muhimmanci a zabi hatimi mai kyau. Dalili na asali na ɗigon ƙarshen shaft na babban injin haɗawa shine lalacewar hatimin iyo. Sakamakon lalacewar zoben hatimi da hatimin mai, rashin isasshen man fetur na tsarin lubrication yana haifar da lalacewa na zamiya da kuma juyawa; Lalacewar abin da ke haifar da ɗigon ƙarshen shaft da ƙugiya tare da babban ramin hadawa yana haifar da zafin ƙarshen shaft ɗin ya yi yawa.
Ƙarshen shinge na babban na'ura wani ɓangare ne inda aka mayar da hankali ga ƙarfin, kuma za a rage yawan rayuwar sabis na sassan a ƙarƙashin aiki na matsananciyar damuwa. Sabili da haka, ya zama dole don maye gurbin zoben hatimi, hatimin mai, zamewa cibiya da kuma juyawa cibiya a cikin shaft ƙarshen hatimin na'urar a cikin lokaci; da kuma abin da ke gefen babban mashin ɗin ƙarshen ɗigon na'ura yana amfani da na'urorin hatimi na asali, don guje wa girma daban-daban da sawa da sauri, wanda kuma yana lalata shingen hadawa. Duba tsarin lubrication cikin lokaci:
1. Saka a kan jujjuya juyi na babban famfo mai na tsarin lubrication
2. The plunger na matsa lamba ma'auni dubawa na babban man famfo na lubrication tsarin ba zai iya aiki yadda ya kamata
3. Bawul core na bawul ɗin aminci na mai rarraba mai mai ci gaba a cikin tsarin lubrication an toshe shi kuma ba za a iya yin rarraba mai ba.
Saboda gazawar shaft ƙarshen tsarin lubrication na tsakiya wanda ya haifar da dalilai na sama, babban famfo mai na tsarin lubrication yana buƙatar maye gurbinsa.