Diagnosis chuan excavator chu speed hniam takin a thawk tlangpui a, mahse speed sang tak a nei lo tih a tarlang a, chu chuan meikhu chhuahna a thlen tlem hle tih a tarlang

Engine hian speed hniam takin a thawk tha hle a, mahse a tlan chak chuan speed a sang ngai lo va, a khalh pawh a chak lo hle. Hei hi fuel supply circulating tling lo vang a ni.
Fuel injection pump siamthat dik loh chuan fuel supply a tihtlem phah a ni.
2 Governor thlasik hian a elasticity a nei a, chu chu hah vang a ni. Accelerator chu a hnuai lamah press a nih chuan fuel level adjustment lever chu a tawp thlengin hmalam pan thei lovin fuel injection pump atanga fuel supply a tlahniam a, engine chu rated speed a thleng thei lo
3 Fuel injection pump-a plunger leh sleeve bakah fuel injector-a needle valve leh needle body te chu a chhe hle a, hei hian fuel pump-naah diesel a leak a tipung a, fuel supply pawh a ti tlem hle.
4 Throttle control lever siamrem dan dik lo emaw throttle pedal chhuah tam lutuk emaw chuan pedal chu a awmna tur ruat sa a thlen theih loh avangin full load-ah fuel supply a tling tawk lo.
⑤ Oil circuit-ah boruak a awm.