Sany SY55/60/65/75/85 distribution valve excavator accessories

The working principle of the distributing valve:

The engine flying rotation is connected with the elastic plate of the torque converter, the elastic plate is connected with the cover wheel, and the cover wheel is connected with the splitting teeth of the pump wheel, the rotating of the splitting teeth drives the working pump shaft gear to rotate, and the hydraulic working pump starts to work.

Excavator distribution valve can not start, start difficult how to repair?

Electrical system fault repair points;

If the battery power is insufficient, charge the battery in time, check the liquid level of the battery, and replenish the electrolyte to the specified height in time. If the battery is improperly charged after aging. The battery should be replaced, while paying attention to the daily maintenance of the battery, do not let the battery often in a state of loss of power.

Engine oil circuit fault maintenance points:

1. Low pressure oil line gas resistance: Under the suction action of the oil delivery pump or injection pump, the fuel is sent to the high pressure pump by the tank through the low pressure oil line. If the low-pressure oil circuit is not tightly closed, or the oil level in the tank is too low, and the vehicle is parked and driven at an Angle, air will take the opportunity to enter the oil circuit; If the temperature is high, the fuel evaporates, it will also form an air resistance in the low pressure oil circuit, causing the engine to work unstable, automatic fire or the engine can not start.

2. Oil circuit blockage: The common parts of the oil circuit blockage mainly include the suction pipe in the oil tank, the filter screen, the diesel filter, the oil tank cap vent hole, etc. The main problem caused by the blockage of the oil circuit is the injection of diesel oil that does not meet the standard, or the mixing of impurities in the refueling process. The key to prevention is to ensure that the purple oil is clean and the oil circuit is sealed, the oil circuit is regularly maintained, the cleaning and maintenance of the diesel filter is strengthened, the core is cleaned or replaced in time, and the oil tank is cleaned in time according to the operating environmental conditions, and the mud and water at the bottom of the tank are completely removed.

3. The failure of the injection pump: the plunger of the injection pump and the parts of the oil outlet valve are seriously worn, resulting in the difficulty of starting the engine. Be in time

Replace plunger and outlet valve parts.