CG958H Wheel Loader. Manual - part 14

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1.2 Profile and Major Parameters 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine (1), Fuel tank (2), Hydraulic oil tank (3), Working unit (4), Cab (5),   

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat radiator (6), Driving axle (7), Master switch (8), fore frame (9) and box (10) 

 

1 

2

3 

4 

5

6 

7 

9 

8

10

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Major Parameters and Dimensions 

Rated 

engine 

power: 

           164kW 

Rated 

engine 

speed: 

 

 

 

          2200r/min 

Rated 

bucket 

capacity: 

 

 

          3.1m

3

 

Rated 

loading 

capacity: 

 

          5t 

Dump height:   (bucket blade /tip)                          3132 mm/3022mm 

Unloading distance at maximum dump height from (bucket blade/tip): 1060mm/1162mm 

Lift time of movable arms:                                                            ＜6.5s 

Total of “three time” of working unit:                                                ＜12s 

Steering angle:                                                                      ±35° 

Turning radius:                                    6400mm 

Maximum traveling speed:                                  36km/h 

Length:                                        8180mm 

Width:                                        3000mm 

Height:                                        3540mm 

Operating Mass:                                      18.4t 

Oil pressure in working hydraulic system:                        17.5MPa 

Oil pressure in steering hydraulic system:                        15.5MPa 

All the above parameters are measured on a loader horizontally parked on hard supporting ground. 

The operator should pay attention in operation to limits of various operating conditions, such as soft 

ground, slope or unbalanced carrying, and correspondingly adopt proper operating mode. 

1.3 Scope of Work and Configuration 

As one of major construction machines, loader is widely used in bucketing, conveying, unloading 

and leveling operation of loose materials in addition to light-duty cutting. 

The working unit of the loader is independently designed and developed by Chenggong with a 

self-made standard bucket. Loading weight of the loader should not exceed 5 tons. 

The loader is equipped with QSB6.7 engine manufactured by Cummins Engine Company, Ltd. 

Torque-converting gearbox is ZF4WG200 manufactured by ZF Liuzhou Company. 

Front and rear driving axles are manufactured by Chenggong. 

1.3.1 Description of working hydraulic system 

I. System principle: 

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II. System components   

1. Working pump: T6DM-B35-3L03-C1 

Manufacturer: Denison USA 

2. 

Pilot-controlled delivery valve

: DKF1-00 

Manufacturer: 

Zhejiang Linhai Haihong Group

 

3. 

Pilot-controlled valve

: model 7470(2) 

Manufacturer: HUSCO USA 

4.

 Selector valve

: model 7130-B 

Manufacturer: HUSCO USA 

5. Driving control block: RSM25 

   Manufacturer: Rexroth Germany 

6. Driving control accumulator: 

Take back the bucket

Descent/floating

 Unloading

Lift

Priority valve EF 

Power 

steering 

valve 

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   Manufacturer: HYDAC Germany 

7. Arm moving cylinder: quantity – inner diameter x travel 2-Φ180x80 

   Manufacturer: Chengdu Hailingda Hydraulic Technology Co., Ltd. 

8. Bucket turning cylinder: quantity – inner diameter x travel 2-Φ200x90 

   Manufacturer: Chengdu Hailingda Hydraulic Technology Co., Ltd. 

III. System description: 

The loader adopts pilot-controlled working hydraulic system with pilot oil coming from 

delivery side of steering pump. A locking electromagnetic valve is installed on pilot-controlled 

delivery valve which is powered off when not working. In this case, operation of pilot handle will 

not activate working unit for safety purpose. Under working status, the locking electromagnetic 

valve is powered on and the operation of pilot handle will activate the reversing of selector valve 

plug to realize lifting, lowering of working unit and bucket retracting and tipping, etc. 

Pilot system accumulator keeps the pressure at a certain level. In case of sudden breakdown of 

engine, place pilot handle to lowering position so that the hydraulic oil in accumulator applies a 

force on valve plug through pilot-controlled valve to lower the movable arms. 

In the system, a driving control block, also called as vibration reduction module, is designed. 

This module leads the oil circuit of the lift cylinder to the accumulator through a switch valve and 

absorbs the load due to dump during driving so as to enable the loader to have a better performance, 

higher speed, rapid transportation, better shifting performance and shorter braking distance etc.   

IV. Features of Components 

1. Working pump T6DM-B35-3L03-C1 

Working pump is a vane pump; refer to introduction in steering hydraulic system for its 

structure and operating principle.