(1) The oil level of the lift body was too low. (2) Sticking of the oil filter filter screen (3) Gas entry into the oil suction pipeline (4) Failure of the gear oil pump (5) Fall of the outer and inner elastic pin on the command lever shaft (6) Fall of the distributor rocker arm (7) The main control valve is delayed in neutral or the release point, or the pump-out valve is stuck in the unlocked position (8) Delay main control valve (9) Retard the bleeder valve (10) The pushrod contracted or the bleeder valve assembly unscrewed and unscrewed to prevent the bleeder valve from opening (11) Closing the cylinder line from the cylinder head
(1) Filling with oil to the specified oil level. (2) Clean or replace the filter screen (3) Check the pipe connections (4) Check, repair or replace the gear oil pump (5) Reinstall the elastic pin. (6) Opens the distributor, installs the rocker arm (7) Removes the divider and cleans all valves (8) Cleans the main control valve (9) Cleans the bleed valve (10) Removes the bleed valve plug, readjusts the bleed valve pusher spacing or tightens the bleed valve assembly (11) Opens the line