Alwaysbesuretoreadandunderstand this manual thoroughly before performing operation and maintenance. Readthe safety messages given in this manual and the safety labels affixed to the machine thoroughly and be sure that you understand them fully. Keepthis manual at the storage location for the Operation and Maintenance Manual given below, and have all personnel read it periodically. If this manual has been lost or has become dirty and cannot be read, request a replacement manual immediately from Komatsu or your Komatsu distributor.
Depress the brake pedal all the way until it stops. The distance of travel at the center of the pedal should be 70 to 90 mm 2. When this value exceeds 91 mm 3. Turn starting switch 1 to the ON position. Check that the monitor and gauges light for 2 seconds, the warning lamps light up for 1 second, and the alarm buzzer sounds for 2 seconds.
It will cause fire. If any fuel has spilled, wipe it up completely. If fuel has spilled over soil or sand, remove that soil or sand. Fuel is highly flammable and dangerous. Never bring flames near fuel. Turn the engine starting switch to the ON position and check the fuel level gauge G on the monitor panel for fuel level. After checking, turn the switch back to the OFF position.
After completing work, fill the fuel tank through fuel filler port F. Fuel capacity: liters After adding fuel, tighten the cap securely. REMARK When dozing on a grade, make sure there is plenty of fuel in the tank so that the engine fuel line does not become aerated.
If breather hole 1 on the cap is clogged, the pressure in the tank will drop and fuel will not flow. Clean the hole from time to time. If it does not sound at all or the sound is extremely feeble, a defect or broken wire is suspected, ask your Komatsu distributor for possible repairs.
If the lamps do not light, check for a broken bulb or disconected wire, contact your Komatsu distributor for repairs. Turn the Head lamp and Rear lamp switches to the l position ON , and check that all the lamps light up. If it does not, a defect or broken wire is suspected, ask your Komatsu distributor for possible repairs. The buzzer must sound immediately at this time. When adjusting the seat, put your back against the backrest and adjust to a position where the brake pedal can be fully depressed.
A Fore-and-aft adjustment Pull lever 1 , set the seat to a position where it is easy to operate, then release the lever. Fore-aft adjustment: mm 6. The weight can be adjusted to 50 to kg to lb. REMARK If you want to make the seat softer, turn the weight adjustment to a lower weight; if you want to make the seat harder, adjust to a higher weight. When operating on uneven surfaces, adjust the seat to a harder setting. Pull lever 3 , set the seatback to a position where it is easy to operate, then release the lever.
D Seat angle adjustment Front angle adjustment of seat 5 stages To raise the front of the seat, apply your weight to the seatback, while pulling up lever 4. To lower the front of the seat, apply your weight to the front of the seat, while pulling up lever 4. Rear angle adjustment of seat 5 stages To raise the rear of the seat, stand up on your feet a little, while pulling up lever 5. To lower the rear of the seat, apply your weight to the rear of the seat, while pulling up lever 5.
E Seat height adjustment Pull up levers 4 and 5 alternately to adjust the angle of the seat. Then, release the levers to lock the seat. Height adjustment distance: 5 stages, 60 mm 2. If there is any wear or damage, replace. Even if there appears to be no problem in the seat belt, replace the seat belt once every 3 years.
The date of manufacture is woven on the reverse side of the belt. Adjust and fasten the seat belt before operating the machine. Always use the seat belt when operating the machine.
Do not use the seat belt with either half of the belt twisted. Check that the bolts of the clamp securing the belt to the chassis are not loose. Tighten them if they are loose. The tightening torque for the mounting bolt is If the belt surface is scratched or frayed or if the fittings are broken or deformed, replace the seat belt unit. After adjusting the seat position, adjust tether belt 1.
Tense the tether belt and install it when there is no one sitting on the seat. Sit on the seat and hold tongue 4 connected to wind-in mechanism 2 and pull out the belt slowly so that the belt will cover your abdomen sufficiently. Insert tongue 4 in buckle 3 until it clicks. The belt is pulled back into wind-in mechanism 2 until it is fitted to your abdomen.
The belt is locked under this condition and cannot be extended anymore. Fit the belt to your abdomen without twisting it. REMARK If the belt is locked before the tongue is inserted in the buckle, let it return to the wind-in mechanism, then repeat the above procedure from the start.
Pull the belt to check that it is securely locked in position. When removing the belt, press the red button on buckle 3. The belt will automatically be wound in. In particular, be sure to adjust the mirror so that people at the rear left or right of the machine can be seen clearly. WARNING After moving case 2 in order to adjust the position of the steering, directional, and gearshift lever, secure lock lever 1 into the notched hole.
Making sure it is in the LOCK position. If it is not completely locked, the steering, directional, and gearshift lever may unexpectedly move and cause damage, serious injury, or death. The joystick can be adjusted by 90 mm 3. With lock lever 1 pulled up, use your other hand to grip the front of case 2 , then move it forward with your left and right hands.
The joystick moves with case 2. Move case 2 to the desired position until a click is heard. Then pull up lock lever 1 and release it. Lock lever 1 automatically returns to the LOCK position. Loosen knob 2 2 places. Tighten knob 2 securely. It is possible to adjust the standard height up 30 mm 1. The joystick moves as a unit. Turn the knob to adjust as follows. If the work equipment control lever is touched by accident when the engine is started, the work equipment may move unexpectedly and cause serious injury or damage.
Check that parking brake lever 1 is in the LOCK position. Check that steering, forward-reverse, gear shift lever 2 is in the N neutral position. Check that the blade is lowered to the ground and that blade control lever 3 is in the HOLD position. Such an act may cause serious bodily injury or fire. Check that there are no persons or obstacles in the surrounding area, then sound the horn and start the engine. Exhaust gas is toxic. When starting the engine in confined spaces, be particularly careful to ensure good ventilation.
If the engine does not start, wait for at least 2 minutes, then repeat the procedure from Step 2. Before starting the engine, check that the fuel control dial is at the low idle MIN position. On this machine, to protect the turbocharger, a turbo protect function is provided. In cold weather, even if fuel control dial 1 is operated immediately after starting the engine, the engine speed may not change for several seconds.
If the fuel control dial is in the FULL position, the engine will accelerate suddenly and cause damage to the engine parts, so set it to an intermediate or low speed position. Turn fuel control dial 1 from the low idle MIN position to a slightly higher speed.
The engine will start. When the engine starts, release the key in starting switch 2. The key will return automatically to the ON position. Never use starting aid fluids as they may cause explosions. When engine pre-heating pilot lamp 3 goes off, turn the key of starting switch 2 to the START position to crank the engine. The time that engine pre-heating pilot lamp 3 stays on changes according to the ambient temperature as shown in the table below.
Ambient temperature. While running the engine, release the decelerator pedal and do not operate the work equipment. Guideline for idle time Cold weather: At least 15 seconds 1st start after changing engine oil or engine oil filter: 20 seconds. When the engine rotation stabilizes, return to the low idle MIN position of fuel control dial 1 and then carry out the warming-up operation. REMARK Regardless of the ambient temperature, if the key in starting switch 2 is turned from OFF position to left, preheating pilot lamp 3 will light up and preheating will start.
Preheating continues while the starting switch is held at the left. For the details of the preheating time, see the table in Step 5. While preheating is being carried out, the preheating pilot lamp 3 lights up to show that preheating is being carried out. If the engine does not start with the above operation, wait for about 2 minutes, and repeat steps 3. And 4. The relationship between the actuation time of the turbo protect function and the engine coolant temperature is as follows.
Even if the fuel control dial is operated within the time given below, the engine speed will not change. Turbo protect function The turbo protect function is a function to protect the turbocharger by keeping the engine speed at less than rpm immediately after the engine is started. When the turbo protect function is actuated, the engine speed is held at less than rpm, regardless of the position of the fuel control dial. When the turbo protect function is actuated, the engine speed is held at less than rpm, even if the fuel control dial is operated.
When the turbo protect function is canceled, the engine speed is set to the speed for the position of the fuel control dial. The relationship between the length of time of actuating the Coolant Turbo protect turbo protect function and the temperature of the engine coolant temperature time sec. If the work equipment is operated without warming the machine up sufficiently, the response of the work equipment to the movement of the control lever will be slow and the work equipment may not respond as the operator desires, so always carry out the warming-up operation.
Particularly in cold areas, be sure to carry out the warm-up operation completely. However, operating the machine under severe conditions at the beginning can adversely affect the performance and shorten the machine life. Be sure to break-in the machine for the initial hours as indicated by the service meter.
During break-in operations, follow the precautions described in this manual. Idle the engine for 5 minutes after starting it up. Avoid operation with heavy loads or at high speeds. Immediately after starting the engine, avoid sudden starts, sudden acceleration, unnecessary sudden stops, and sudden changes in direction. Do not run the engine at low idle or high idle for more than 20 minutes. If it is necessary to run the engine at idle, apply a load or run at a medium speed from time to time.
After warm-up run is completed, check gauges and caution lamps for proper operation. If any abnormality is found, repair it.
Continue to run the engine under a light load until engine coolant temperature gauge indicator 2 is within the green range B. Check for abnormal exhaust gas color, noise, or vibration. If any abnormality is found, contact your Komatsu distributor. Always carry out the warm-up operation. This will help to extend the machine life. Do not suddenly accelerate the engine before the warm-up operation is completed. Do not run the engine at low idle or high idle con-tinuously for more than 20 minutes.
This will cause leakage of oil from the turbocharger oil supply piping. If it is necessary to run the engine at idle, apply a load from time to time or run the engine at a mid-range speed. Blade control lever 2 to the full RAISE position, then hold the lever in position, and operate slowly to the left tilt relief and right tilt relief positions for 5 minutes.
After this, operate the blade control lever 2 fully to the RAISE position, hold the lever in position, and relieve the left and right tilt intermittently. Next, move the lever to the LOWER position and lower the blade to the ground, then move the lever to the full FLOAT position, hold the lever in position, and relieve the left and right tilt intermittently for 5 minutes. Lower the blade to the ground, move the control lever fully to the FLOAT position lever stroke end and hold the lever in position for 1 minute.
After waiting for 3 minutes, return the lever to the HOLD position. Continue to run the engine at light load until engine coolant temperature gauge indicator 3 and Hydraulic oil temperature gauge 4 fall within the green range B. Do not abruptly stop the engine except for an emergency. If the engine has overheated, do not stop it abruptly, run it at medium speed allowing the engine to gradually cool down, then stop it.
Place fuel control dial 1 in the low idle MIN position and run the engine at low idle speed for about 5 minutes to allow it to gradually cool down. Turn the key in starting switch 2 to the OFF position. The engine will stop. The power supply is maintained for several seconds to enable the controller to save the operating condition to memory and shuts down the system after that. The length of time that the power supply is maintained depends on the operating condition. Even when the cooling fan is being operated in reverse or in the cleaning mode, the machine power supply is not cut immediately when the key in starting switch 2 is turned to the OFF position.
The power supply is maintained for seven seconds to protect the hydraulic circuit. During that time, the fan operation confirmation lamp on the monitor panel flashes. Remove the key from starting switch 2. Do not allow anyone to enter the area around the machine. There is a blind spot at the rear of the machine, so be particularly careful when traveling in reverse. When moving the machine on a slope, always keep brake pedal 7 depressed even after releasing parking break lever 1. When moving the machine up a steep slope, turn fuel control dial 4 to the max.
Then move joystick steering, directional, and gearshift lever 6 from the N position to the direction of travel and release brake pedal 7 slowly. When the travel speed rises, release deceleration pedal 5 slowly.
Turn fuel control dial 4 to the full speed MAX position, and fully depress decelerator pedal 5. If the alarm does not sound, please contact your Komatsu distributor. Depress brake pedal 1 to stop the machine.
NOTICE If the brake is depressed when the engine speed or travel speed is high, the brake disc may make a slipping sound. Normally, depress decelerator pedal 2 to reduce the engine speed and travel speed before depressing the brake. Move joystick 3 to the N neutral position, depress brake pedal 1 further, and stop the machine. Move steering, forward-reverse, gear shift lever 1 to the desired gear position to shift gears.
Up switch a : Each time switch is pressed, transmission shifts up 1 range Down switch b : Each time switch is pressed, transmission shifts down 1 range There are 3 forward and 3 reverse speed ranges. Set joystick 1 to the N position. When the preset mode function is actuated, [F1-R1] is displayed at the left side of the bottom line of display panel B multi-information on the monitor panel, and the [F1-R1] mode is set.
If it is desired to select another mode, press up switch a or down switch b on steering, directional, and speed lever 1 and display the desired mode on control panel B multi-information. The types of mode and method of selection are as follows. Example of shift control when [F2-R2] mode is set. When steering, forward-reverse, gear shift lever is set to F position, speed range F2 is automatically selected.
When steering, forward-reverse, gear shift lever is set to R position, speed range R2 is automatically selected.
REMARK Even when the preset mode function is being actuated, it is possible to select the speed range by operating the up switch or down switch when the machine is traveling forward or in reverse. However, the preset mode remains set as it is.
If the steering, directional, and speed lever is returned to the N position and then operated again to the forward or reverse position, the set speed range is selected. A particular advantage is that when the auto shift down function described below is being actuated, it is possible to save the trouble of shifting up when traveling in reverse after the transmission has shifted down during digging.
The function is actuated when auto shift down switch 4 on the front panel is set to l position ON. REMARK When the preset mode is being actuated, to ensure safety, the system is set so that it does not shift up after the auto shift down has been actuated. If it is desired to shift up, operate the up switch manually. However, the preset mode remains set. If the steering, directional, and speed lever is returned to the N position and then operated again to the forward or reverse position, the preset speed range is again selected.
Do not change it while the engine is running at the full speed, however, but depress the decelerator pedal to lower the engine speed before changing the travel direction for safety, comfort, and longer life of the power train. Move joystick 2 to the neutral position, reduce the speed, then depress brake pedal 3 and stop the machine.
After depressing decelerator pedal 1 , move steering, forward-reverse, gear shift lever 2 to the desired position. The machine will tend to slip sideways. Particular care should be taken on soft or clay land. Never make a pivot turn at high speed. WARNING When performing a counterrotation turn, the feeling of operation when your head is facing the rear is different from the feeling if you are facing the front.
Never carry out a counterroatation turn while facing the rear. To turn the machine while traveling, incline steering, forward-reverse, gear shift lever 1 in the direction to turn. After that, the lever can be moved further towards the end of its travel to set the desired turning radius. With steering, forward-reverse, gear shift lever 1 in the N position, operate the lever partially to the left L.
If the lever is moved further, the speed of the counterrotation turn will increase. REMARK When making a right counterrotation turn, move the steering, forward-reverse, gear shift lever 1 to the right R in the same way. Also, be careful that the engine cooling fan will not come in contact with water. The fan can be damaged. Furthermore, the engine may stall. Failure to brake may result in overrunning, causing engine trouble.
If this makes the engine stop, the braking effect will be reduced, so be careful not to let the fuel level in the fuel tank become too low. Using emergency brake at full speed Using brake with engine running at full speed in first gear F1, R1 Machine stall condition REMARK Always depress the decelerator pedal to lower the engine speed before actuating the brakes.
If the door is open, there is danger of damage from obstacles or strong vibration. Always keep the glass clean to ensure safety during operations. When operating, always be sure to check carefully that there is no obstacle or worker in the surrounding area. Description Download: Komatsu d65ex parts manual Read Online: Komatsu d65ex parts manual campus jungfernsee konrad-zuse-ring 12a potsdam dombert.
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