CG935G Wheel Loader. Manual - part 14

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Start key switch and accessories (8) 

Rotary switch (28)--including foglight switch (far near light) and turn signal switch 

Cigarette lighter (55)--Facilitating lighting cigarette; 

Horn button (42) 

Stop button (74); 

2.2 Instruments, Control Switch and Indicator Light 

1) Electronic monitoring: 

Engine oil pressure gauge-- indicating engine oil. The normal value is 0.1~1.0Mpa. 

Engine water thermometer -- indicating the temperature of the engine’s coolant. The normal value is 

80℃~92℃. 

Engine tachometer-- indicating the working rotation speed of the engine. The normal value is 

0~2000rpm. In addition, it indicates the magnitude of voltage of the circuit. The normal value is 

8~32V. 

Oil-temperature gauge of torque converter-- indicating the working oil temperature of the torque 

converter. The normal value is ≤120℃. 

Voltmeter -- indicating the voltage of the circuit and power supply. The rated value is 24V; 

Signal lamp (Top row left to right): 

Work rotation; emergency alarm; emergency turning; wait indicator; stop indicator and failure 

indicator. 

Signal lamp (Bottom row left to right): 

Left turn indicator; charging indicator; far light indicator; hydraulic block; parking brake; 

Transmission fluid pressure; brake pressure; right turn indicator; and engine failure indicator. 

2) Panel switch: 

Power shutoff selector switch (73)--Choice of power shutoff or not in service brake; 

Rear working light switch (25). The rear working light can be turned on as the front/rear position 

lamp is turned on; 

Front working light switch (27). The front working light can be turned on as the front/rear position 

lamp is turned on; 

Instrument pageup/down button (56). The intelligent instrument may indicate by pageup and 

pagedown; 

Working rotary switch (36); 

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Emergency warning switch (24); 

Front wiper switch (47); 

Rear wiper switch (49); 

Failure diagnosis switch (80); 

Failure pageup/down switch (81); 

Joystick lock switch (14)--Only as the switch closes, the lifting of hydraulic oil circuit by the 

moving arm and of bucket is allowed; 

Cigarette lighter (26); 

Standby socket (85);   

Fuel gauge (38)--Indicating the oil level of the fuel box; 

Transmission fluid pressure gauge (39)--indicating the working oil pressure of the transmission case. 

The normal value is 1.6~1.8Mpa. 

Emergency turning switch (87)--Press this button to start the emergency turning system. 

Caution 

It is suggested to use the emergency turning system under the circumstance that urgent 

turning to avoid obstruction is required as the paroxysmal normal turning system fails or 

engine shuts down. 

Warning 

If the emergency turning system is started frequently, the emergency turning unit will be 

damaged possibly. 

The electrical control system of this loader mainly is composed of two parts including 

electronic spray engine control system by CAN bus control and control system for accessories 

including lighting, signal and alarm indicators, air conditioning, lifting control and leveling control 

etc.

   

   

Warning 

Improper external power connection will result in personal injuries and death due to 

explosion. Accumulators connected in series shall be installed in a separate accumulator box. 

As the external power source is used, the cable joint (+) shall be connected with the 

accumulator’s joint (+) connected with the starter coil. The cable cathode (-) of the external 

power source shall be connected with the one of the starter. In case the cathode of the starter 

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 Fuse with the same model number and specification must be used for replacement, 

otherwise the circuit may be damaged. If the fuse needs frequent replacement, there may be 

a failure in circuit which should be checked. 

2.3 Air Conditioning System   

   Basic operating method 

  Refrigeration  (1) For the first time the cooling 

system is used, blowing rate switch shall be 

rotated to the high speed after the engine is 

started (at this time, the indicator lights), and run 

for five minutes. 

        (2) Rotate the temperature control switch clockwise to “COLD”. At this time, the cooling 

system starts work. 

    (3) When the temperature is decreased to the required one, rotate the temperature control 

switch anticlockwise slowly until the indicator off. (At this time, the temperature is the 

one set. The air conditioning system will regulate the temperature automatically). 

(4) As the cold air is used in high temperature seasons, windows and doors shall be closed, 

or not the refrigeration effect will be weakened. 

 Note: In refrigeration, please shut off the heat water valve 

Heat supply (1) Turn off the temperature control switch to OFF, turn on the heat water valve 

and start the blowing rate switch. 

        (2) Appropriate temperature may be attained by regulating the heat water valve. 

 As the engine fails to work for ambient temperature less than 0℃, the engine radiator shall 

be emptied or filled with anti-icing fluid so as to avoid the breakage of the pipe of the 

radiator of the heat supply system. 

 The whole air conditioning system shall not be dismantled without authorization. The 

repairing shall be conducted a professional person. 

 The belt shall be examined daily for proper tightness. 

 The dirt on the surface of condensator shall be cleaned in time so as to avoid weakening the 

refrigeration effect. 

 After discharging secondary refrigerant or repairing, the proper refrigeration oil shall be 

1 Blowing rate switch 2 Temperature control switch

1 

2

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added depending on the amount of the one discharged. The secondary refrigerant 

discharged shall be recovered with the special equipment. 

 The air conditioning shall be started for refrigeration one time biweekly during the season 

of winter so as to ensure the smooth operation of the system. 

Use of air vent and defrosting 

function 

Air vent--If necessary, the air 

direction may be changed by 

regulating the air guide sheet of the 

air vent. 

 As the air conditioning is not used, the air vent shall be closed to avoid the access of the 

foreign substances. 

 As the cold air is used in high temperature seasons, the window and door shall be closed, or 

not the refrigeration effect will be weakened. 

 As the engine is turned off, the air conditioning device shall not be used, or not the energy 

of the accumulator shall be wasted and difficult starting of the loader will be occurred. 

 Please examine and maintain the air conditioning regularly for a long service life. 

2.4 Accumulator 

Two accumulators connected in series are located at the same accumulator box. As the 

cross strapping is adopted, the anode cable (+) shall be connected with the accumulator’s joint 

(+) connected with the starter coil. The cable cathode (-) of the external power source shall be 

connected with the one of the starter. In case the cathode of the starter is not available, the 

cable cathode (-) of the external power source shall be connected with the body of the engine. 

The accumulator of this loader is free from maintenance, which is located at the left side of 

the rear end of the rear frame. For maintenance-free accumulator, the electrolyte may not be 

examined and water may not be added. It is safe in use and propitious to environmental 

protection. 

Examination over charging state 

The charging-state indication densimeter is attached on the cap. It may indicate the charging 

state: