No oil gun oil tanker carve reasons

1, the motor reversal or transfer belt loose, broken. Should adjust power phase sequence, adjust or replace the belt tensioner;
2, oil separator fault; ① tanker filters (including conical strainer) congested. Filters should be cleaned to remove debris; ② oil separator valve stuck untapped oil tanker caused no oil. Maintenance should remove the oil valve, re-installed after clearing the debris, so that it can move up and down freely; ③ small oil separator float into the oil or fall off, resulting in a high-pressure hyperbaric chamber can also cause cng fuel dispenser ④ oil separator pressure pad superstructure damage caused by high-pressure chamber communicating with the pressure chamber, resulting in high-pressure hyperbaric chamber not form leaving no oil tanker; no oil. ⑤ hydrocarbon human separator filter pads or spring seat damage. Replace damaged gaskets; ⑥ oil separator cone valve is not shutting.
3, vane pump failure; ① vane pump relief valve is not closed. Due to a foreign body (broken shrapnel, etc.) between the relief valve stuck in the valve and valve seat, causing the fluid inside the loop always do and can not flow in the pump, repairs should remove the spool, remove foreign bodies seat; ② Because the pump with the rotor blades and the shrapnel long do high-speed operation, due to fatigue and wear, fracture, resulting in vane pump discharge increases, even when serious loss of pumping action, the pump should be cleared of debris and repair damaged leaves, shrapnel, re-installed after replacing new; ③ vane pump and gas separator combined with the surface of the pump pad breakdown or anti-loaded, can also cause vane pump high-pressure chamber communicates with the low pressure chamber, resulting in the loss of the oil discharge vane pump function; ④ vane pump loose rotor and the rotor shaft, causing the shaft idle, then repair or replace the rotor blades need to diesel hand pump