CNHTC HOWO-TX Series Vehicle Truck Owner’s Manual

CNHTC HOWO-TX Series Vehicle Truck Owner’s Manual

1. INTRODUCTION

1.1 CABIN INTERIOR OVERVIEW

1.2 INSTRUMENT PANEL

1.3 ROCKER SWITCHES AND BUTTONS

1. Emergency alarm switch: Press the switch, all turn lights will ash and turning indicator lamp on instrument panel will also ash.
2. Auxiliary high beam switch: If the high beam is on, press the switch to turn on the auxiliary high beam.
3. Horn change-over switch : If the switch do not work, press the horn button on steering wheel and the electric horn will honk; after pressing this switch, press the horn button on steering wheel and the air horn will work.
4. Working light switch: Press the switch to open working light behind cab.
5. Engine PTO switch: Press the switch and you can adjust engine speed by adjusting PTO knob. At this moment, the accelerator pedal will not function any more.
6. Engine diagnosis switch: Press the switch and read the ash code of engine fault on instrument panel; find the fault code table, and you will know what fault occur in the current engine system.
7. Cab tilting switch: Press the switch, keep lifting oil pump in lifting or declining state, and then press tilting button outside of cab to achieve electrical self-lifting or declining of cab.
8. Exhaust brake linkage isolating switch: Press the switch to cut off the exhaust brake linkage. Press switch when the road is slippery on rainy or snowy condition.
9. Intelligent brake request switch: The intelligent brake is in the default active state, and the indicator light of the switch is on. At this time, the driver steps on the brake pedal. If the exhaust brake conditions are met, the exhaust brake will work at the same time as the driving brake. Press the intelligent brake switch to tum off the intelligent brake function, and the indicator light of the switch goes off.
10. Headlamp light beam adjustment knobs: Manually adjust the light beam irradiation position of the headlamp position as per the vehicle loading. There are four gears and the light beam height lowers step by step from 0-gear to 3-gear.

11. The fuel economy switch: Press the switch, the maximum driving speed can be automatically determined according to the vehicle configuration, the engine runs more softly, so that the vehicle maximum driving under economic conditions.
12. Engine speed mode knob: Press the switch, the engine speed can be adjusted within a certain range. For details of operation instructions, see 2.11 Engine Speed Mode Knob.
13. Inter-wheel dlfferentlal lock switch: Press the switch and the cross- wheel differential lock will be engaged. For details of operation instructions, see 2.5 differential lock operation.
14. Inter-axle differential lock switch: Press the switch and the cross-shaft differential lock will be engaged. For details of operation instructions, see 2.5 differential lock operation.
15. Fuel heating switch : Press the switch to activate the heating function of the crude fuel filter.

1.4 DETECTION LAMP AND ALARM LAMP

1.5 AIR PRESSURE DISPLAY

• The barometer shows the pressure value of the circuit with low air pressure; High air pressure of circuit will show by the air pressure switch button under the panel. After 10 seconds, it will automatically switch the pressure value displayed as the lower pressure loop.

• CD is the rear axle pressure indicator lamp, Brake circuit I pressure condition

• (1) is the front axle pressure indicator lamp. Brake circuit II pressure condition

•  (2) If the barometer pointer show in the red area @ : the air pressure is too low

•  The barometer pointer show in the yellow area© : the air pressure is normal

• If air pressure is too low (lower than 0.55MPa) and alarm lamp is on, Vehicle can only be started when alarm lamp is out and warning information disappears.

• After startup, test brake performance (service brake and parking brake) of vehicle on dry road surface with good adhesion!

• Ensure no foreign matter in the pedal manipulation area.

2. OPERATING INTRODUCTION

2.1 ENGINE START

1. At the first start, you need to reset the key switch to position 2 to restart if the engine is not started. Each starting time shall not exceed 15 seconds, and the interval between two starting shall not be less than 30 seconds.

2. It is not allowed for cold engine to run at high speed. It should stop engine immediately and to do service if the oil pressure is low.

3. After the engine is started, it should keep running in idle speed for 3-5 minutes and not hit the throttle. It can add load after the oil pressure and oil temperature in normal (especially in cold days). Otherwise, the supercharger bearings and seal rings will be worn out due to lack of oil.

4. It should be running in idle speed for 3-5 minutes before engine off. The engine can be stalled after the speed of turbocharger is reduced. It should be especially careful that it cannot hit the throttle before engine stalled. Hitting throttle will accelerate engine speed and the turbocharge will be in high speeding status. After engine stalled. The oil pump stops supplying oil immediately, and the turbocharger rotor continues to run at high speed due to inertia, and the rotor shaft, bearings and seal rings would soon be burned due to lack of oil.

5. The turbocharger must be pre-lubricated before restarting the engine which has been stopped for a long time. This can be achieved by
   disassembling the oil inlet pipe of the turbocharger and pour little of clean engine oil. Otherwise it will cause early wear due to lack of oil.

6. It is strictly forbidden to cut off the circuit connection between the battery and the central control unit when the key switch and other input power with wake-up function are not turned off. Otherwise, not only the electronic control unit, harness and electronic and electrical components of each system of the whole vehicle may be damaged in hardware, but also the system data may be lost, resulting in the serious consequences that the vehicle cannot be used

7. When the fault is very serious, the serious fault alarm indicator “STOP” lights up, and the buzzer will keep alarming to alarm when the engine is working. At this time, you should stop and check it immediately, and it is only allowed to move forward after the troubleshooting! Otherwise, it may cause loss of life and property!

2.2 AIR CONDITION SYSTEMS

• Self check and error repair function of air conditioning control system + Self test conditions:
  At the same time, press the auto key, water valve key and cycle key for 3 seconds, and then the control panel will enter the self
  inspection program.

• Self inspection contents:
  After the automatic operation of each actuator, the fault information will be displayed.

• The actuator operates in the following order:
  a) First, display the full screen (that is, display all the symbols to be displayed);
  b) Blowing surface, internal circulation, first gear of wind speed, AC opening, water valve closing;
  c) Blowing face and foot, external circulation, wind speed rising from first gear to third gear, AC closing, water valve opening;
  d) Foot blowing, external circulation, wind speed up to the maximum gear, AC closed, water valve closed;
  e) Display fault code;
  f) Automatically exit the self-test program.
  The display time of each item shall not be less than 1.5s, and the display speed shall be uniform and consistent for easy viewing Check.

• Automatic exit mode of forced self test:
  After the automatic operation of each actuator, the fault information will be displayed.               
  a) Automatically exit after the end of display;  b) Press any key;  c) Power on status after self check exit.

• Fault code display mode:

a) In the self-test state, the temperature display bit will display the fault code. If there are multiple faults, the temperature display bit will display the fault code
The code is displayed at 1.5 second interval, and the interval time of single fault code is 1.5 second
The time of two failures is 3 seconds and so on. After the display, the system will exit automatically.
b) In the fault inquiry state (press the mode key and auto key at the same time), The temperature display bit will show the fault code. In case of multiple faults, the code is displayed in cycles at the speed of 1.5 second interval The interval time of single fault code is 1.5 seconds, the interval time of two faults is 3 seconds, and so on; Press the key to stop displaying the fault code.

2.3 TRACTION PREPARATION (TOWING)

Before towing, disconnect drive shaft and cut off power.

• Do not try to steer a static vehicle as this action may damage its steering system due to absence of hydraulic power assistance!
• Steering without hydraulic power assistance is allowed only when the vehicle is moving.
• Steering wheel requires larger force when engine is shut down as then hydraulic power assistance will fail. In this case, the vehicle shall be towed slowly.
• If the air pressure of the brake system is insufficient, the external compressed air (at least 0.55MPa) or mechanical means can be introduced to remove the braking of the spring energy storage brake chamber. Refer to ‘spring energy storage brake hamber”. Note that the vehide will not brake after that!

Spring Energy Storage Brake Chamber-Emergency Release

• When the air pressure of the parking brake circuit is lower than 0.55MPa, the pressure of the diaphragm acting on the brake air chamber is less than that of the energy storage spring, and the spring energy storage braking functions. The “STOP” lamp, brake system fault lamp G) and parking brake lamp@ are lighted at the same time.

• Spring energy storage chamber can be released pneumatically or mechanically under emergency or at the workshop.

• Make sure the vehicle cannot move before release of spring energy storage brake chamber !

• Emergency release device of spring energy storage brake chamber can be used only for operation of the vehicle at the workshop or under emergency.

• Running of the vehicle after emergency release of spring energy storage chamber will cause accident as pressure of service brake circuit I and circuit II can hardly ensure braking effectively.

• Do not drive the vehicle before parking brake light on the driver’s display screen disappears.

Spring energy storage brake chamber- emergency mechanical release

Diaphragm spring brake chamber

• When the air pipe of the connected spring energy storage brake chamber causes self-braking due to leakage, the brake can be released as long as the bolt G) at the rear end of the brake chamber is screwed out to the release position.

Dual diaphragm spring brake chamber

• Open the rear cover@ of the double diaphragm spring brake air chamber, insert it from the rear cover with bolt @ and screw it
  out manually to release the brake.

2.4 TRANSMISSION

• When shifting gears, the clutch should be completely disengaged, and the gear lever should be in place.
• The switch valve shall be placed in the low gear position when the vehicle parking.
• The vehicle parking could be released until the air pressure reach the starting air pressure and move.
• You can’t shift to any gear in advance Unless the current speed is within the allowable range.
• Skipping shift gear is not allowed when shifting gear from low gear position to high gear position.
• When the vehicle is going downhill, it is prohibited to change gear zone between high and low.

2.4.3 SINOTRUK Second Generation AMT Transmission

Auto-function (A function)

• Automatic function is the default operating function of the control system.
• Under the automatic function, the driver only needs to choose the starting gear through the shift handle. Start gear includes forward gear, reverse gear or neutral gear. The transmission control system will automatically select the most appropriate gear according to the current vehicle condition. The driver can also interfere with the shift through the handle under the automatic function.

Manual-function (M function)

• Gear shifting time of manual function is sent by the driver. The gear position number of gear shifts can be determined by the driver or by AMT system. The operation method is the same as the manual intervention of the automatic mode.

AIM mode selection

• The driver can realize switching between manual and automatic by button G) on the handle.
• The display screen on instrument panel displays the current working mode of transmission at real time.
• The default operation mode of system is automatic mode. The driver can finish switching of AIM pattern during starting and running.

Vehicle starting

• Select the appropriate starting gear position (The control system only allows to start from gear 1-8, it is recommended to start at gear 1-4)
• Slightly step on the accelerator pedal and the vehicle will start.
• Release parking brake.
  – When it is required to start under medium-idle mode, please keep at current neutral gear and then switch to starting gear; step on the pedal, release the parking brake and start running. During this mode,the vehicle can only run at 1-4 gears under this mode. If mode C is not required, please press C button to exit.
  – When you need to start in high idle mode, keep the current gear position at neutral gear, and then press C button for more than 5s . Then engage the starting gear, step on the accelerator pedal to the end, and then start running. After the vehicle starts normally, the high idle mode is automatic, no need to press the C button again.

Creeping mode

• The AMT system provides a creep mode that allows the vehicle to slow down in certain conditions.
• The driver switches to M mode by double-clicking the M/A button on the handle, and then presses on the brake pedal to hang the starting gear. After successfully hanging the gear, release the brake pedal and the vehicle moves slowly; In the creep process, the gear can be lifted manually (up to 5 gears);You can step on the accelerator pedal to accelerate during creep. Release the accelerator pedal to continue creep mode; You can also step on the brake pedal to slow down or stop, release the brake pedal to continue the creep mode.
• The creep mode supports 1-5 gear and R1 gear. The driver can choose gear by himself according to the working condition. Stepping on the accelerator pedal and switching gears will not exit the creep mode, Simply manually switching to A mode can exit creep mode.

Automatic mode operation during driving
Up-shift and down-shift

• In the process of driving, the accelerator pedal@ affects the engine speed, torque and the speed of the whole vehicle. AMT will automatically based on the current engine speed and other information. When step on the accelerator pedal, the vehicle will slow down, and the control system will select the most proper gear for the vehicle running.

Acceleration

• To maximize vehicle acceleration, follow the following steps:
  – Switch to mode P;
  – Step the accelerator pedal @
  – The control system will maintain the current gear position or select a lower gear position to operate;
  – The vehicle will obtain enough power and the speed will increase rapidly.

Decelerate

• Step on the brake pedal G) or release the accelerator pedal (1) , and the vehicle will slow down.

Manual gear shifting under automatic mode

• When the vehicle is running under automatic mode, the driver can intervene in automatic mode by handle operation. Push the handle G) forward to shift up and push the handle CD downward to shift down.
• Only if the running condition of the vehicle meets the gear shifting requirements, the handle operation in automatic mode can realize the gear shifting.In automatic mode, the handle action can affect the operation in automatic mode, but it will not release the automatic mode and switch the transmission operation mode to manual mode.

Manual mode operation during driving

• Any gear shifting action in manual mode is operated by the driver, but the clutch is automatically controlled by the system.
• Gear shifting cannot be realized unless the vehicle running condition meets the demand of gear shifting. If the current engine speed cannot reach the speed required by target gear, the control system will switch to a suitable gear but not the target gear necessarily according to current speed; if the control system does not allow to shift gears at current operating environment, a warning sound will be sent out to indicate that the gear shifting request of driver is refused.

Up-shift operation

• If there is no special situation when in gear shifting, do not change the current accelerator pedal position.
• When the driver pushes the handle forward, the request of up-shifting at least one gear will be sent out if the function button G) (round button F at left side of handle) is not pressed; the request of up-shifting one gear will be sent out if the function button is pressed. It indicates that gear shifting succeeds if the target gear lamp on display screen stops ashing.
• Only when the vehicle’s operating environment meets the shift requirements can the shift be realized. If the current operating environment does not allow the shift, the vehicle will send out a warning sound to remind that the gear cannot be shifted up.

Down-shift operation

• If there is no special situation when in gear shifting, do not change the current accelerator pedal position.
• When the driver pushes the handle backward, the request of down-shifting at least one gear will be sent out if the function button G) (round button F at left side of handle) is not pressed; the request of down-shifting one gear will be sent out if the function button is pressed. It indicates that gear shifting succeeds if the target gear lamp on display screen stops ashing.
• Only when the vehicle’s operating environment meets the shift requirements can the shift be realized.

Engage from the neutral gear to a proper gear position

• When the vehicle is sliding and the transmission is in a neutral gear position, the transmission may be directly engaged in a proper gear position through the Gear shifting handle.
• If pushing the handle forward, AMT will switch to the higher gear position that is allowed under the current vehicle operating conditions. When the instrument display screen shows the target gear position and stops flickering, the gear shifting is completed.
• If pushing the handle downward, AMT will switch to the lower gear position that is allowed under the current vehicle operating conditions. When the instrument display screen shows the target gear position and stops flickering, the gear shifting is completed.

Deceleration and Stop

• When it is necessary to decelerate and stop, step on the brake pedal CD . The control system automatically shifts down when the brake pedal is released. After the vehicle is stopped stably, apply the parking brake.
• After the vehicle stops, the vehicle is still in the gear position, and will automatically return to neutral gear without any other action within 90s.

Switch to neutral-gear

• If it is required to park for a long time, please switch the transmission to neutral position to protect the clutch. Press the neutral-gear button @ (round button Fat left side of handle), and it indicates the vehicle returns to neutral position if the display screen shows neutral-gear symbol N.

Switch to reverse gear

2.5 DIFFERENTIAL LOCK OPERATION
When driving into bad road or abby pavement, to prevent single tire of rear axle from slipping, differential lock can be used for a short time. When engaging differential lock, vehicle shall be stopped or go straight slowly.

1. Differential lock can only be engaged when vehicle is stopped or drives in a straight line at low speed !
2. Engagement of cross-wheel differential lock – 4×2, 6×2 vehicle.
   + Release accelerator pedal (deceleration), Reduce to a stop or walking speed.
   + Press the lower part of cross-wheel differential lock switch G) .
   + Rear axle inter wheel differential lock engages.
   + The indicator lamp of inter-wheel differential lock is on.
   + Carefully step on the accelerator pedal and accelerate slowly.

2.6 ADJUSTMENT OF REAR-VIEW MIRROR

• Rearview mirror can only be adjusted when key switch is at ON position.
• Ensure the driver seat is in a comfortable driving position.
• The control system can offer overheat protection to motors in order to prevent overheating due to frequent action of switches. After the rearview mirror motor starts and stops operation for 1 O times within 5 seconds, the rearview mirror will no longer correspond to any operation command within 3 minutes.
• Do not to adjust rearview mirror during operation!

2.7 OPERATION OF PTO

• PTO controlled by clutch, It can be operated when vehicle is both running and stationary.

• Engagement/ disengagement
  – PTO engagement and disengagement are only allowed when the clutch is fully disengaged.
  – Clutch disengagement must be made at engine idle speed.
  – Tooth breaking may occur if PTO engagement is made when the countershaft is not stationary.

• Parking
  – Engage low gear(1-4 gear).
  – lift handbrake.

• For safety:
  – Engage forward gear when vehicle is stopped uphill.
  – Engage reverse gear when vehicle is stopped on slope.
  – For safety, please put blocks behind the wheels if vehicle is fully laden.

• Service lift differs for different operation methods, and may be shortened because of short synchronizing time. Therefore please use 1 gear for vehicle start.

• Tooth breaking noise is not allowed during engagement and disengagement of reverse gear. If necessary, please extend the time needed for clutch disengagement or check the clutch is completely separated or not.

• Slowly engage the clutch until PTO connect properly.

• Gear shift is not allowed when PTO is working.

2.8 DUMP TRUCK CARGO BOX

2.9 EXHAUST BRAKE OPERATION

2.10 FIFTH WHEEL/SADDLE

Connection of the semi-trailer

Disconnection of the semi-trailer

2.11 CABIN ELECTRIC TILTING

3.CHECK INTRODUCTION

3.1 COOLING SYSTEM: CHECK DAILY

3.2 ENGINE OIL: CHECK DAILY

3.3 AIR DRYER: CHECK MONTHLY

• Check the air dryer once a month to see if it is working properly and effectively(or according to the local climate condition,vehicle usage and running condition to check regularly). Open the water discharge valve of the air storage cylinder to check.

• Protect your eyes and hands when operating the drain valve.

• Check and remove moisture in the air container of brake system.

• When truck parked, pull the pull ring G) of the manual water drain valve at the lower part of the air storage tank laterally, the water condensed in the air storage tank can be eliminated.

• It is recommended to check the air storage cylinder farthest from the air dryer every day. If there is oil and water mixture discharged from the water discharge valve, it means that the air dryer is invalid. The upper drying tank of the air dryer should be changed immediately.

• Replace the drying tank on top of the air dryer at least every 2 years (recommended before winter).

Tire inflation

3.4 CLUTCH: CHECK MONTHLY

Check the clutch system cable

• Check whether there is leakage of air and fluid in the clutch system cable.

3.5 OIL-BATH TYPE AIR CLEANER

• Oil should be filled with the same as engine oil before vehicle used!
• When filling the oil, the oil depth shall not exceed 30mm or the filling amount shall be SL, and shall not be excessive.
• When shaking the pan and the oil is not easy to ow, clean the filter and replace the oil.

Disassembly, inspection and cleaning steps:

3.6 OTHER NOTES

• Please do not slide in neutral when the vehicle is downhill. When taking braking deceleration better use exhaust brake at the same time. When the vehicle is loaded, exhaust brake can also be operated to assist vehicle deceleration.
• When parking for a long time, it should turn off the engine and should turn off the main power switch and use parking brake at the same time, to avoid accidents.
• Unauthorized modification and installation of all kinds of equipment are prohibited, especially the electronic, braking, steering and other safety related systems, otherwise it may affect the life and safety performance of the vehicle, resulting in accidents, fire, damage to the vehicle, our company will not be responsible for the consequences. Disassembly or replacement of the engine ECU is strictly prohibited, otherwise the vehicle may be damaged.
• Open the front cover before tilting the cab.
• Cut off the main power switch and unplug the plug of electrical components (BCU, instrument, engine ECU, ABS control unit) when welding work is performed in or near the vehicle.
• Do not flush the engine with water because this can short-circuit the engine electrical system and damage the ECU.
• The cooling system uses the antifreeze and antirust coolant. It is not allowed to mix the coolant of different grades/type. If different grades of coolant are applied, the engine cooling system components need to be thoroughly cleaned.
• The moisture condensed in the air cylinder should be discharged in time to prevent freezing. And pay attention to check the working condition of the air dryer. Under normal working condition, the using life of the desiccant in the dryer is two years. If it is found that there is polluted water discharged from the air storage cylinder, the desiccant has failed, and the desiccant should be replaced immediately.
• Check the level and specific gravity of battery electrolyte every three months. The electrolyte level should be 10-1Smm higher than the battery lead plate, Specific gravity is above 1.24g/cm3• If the vehicle is not used for a long time, and the temperature is low, it is best to remove the battery and put it into a warmer room. Every time the vehicle travels 5000km, it should check whether the clamp between the electrode pile and the wire of the battery is loose and whether the battery works normally.
• Keep good driving habits, avoid long time or sudden braking of the vehicle, otherwise it will have bad affect to the using life and fuel economy of the vehicle.

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