CLEAN REQUIRED INSIDE OF COOLING SYSTEM
CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT
Cleaning or replacing outer element
Direct dry compressd air (less than 7 kg/cm2) to the element from inside along its folds, then direct it from outside along its folds and again from inside.
Replacing inner element
CHECK TRACK TENSION
The wear of pins and bushings on the undercarriage will vary with the working conditions and soil properties. It is thus necessary to continually inspect the track tension so as to maintain the standard tension.
Carry out the check and adjustment under the same conditions as when operating (on jobsites where the track becomes clogged with mud, measure with the track clogged with mud).
When increasing tension
When loosening tension
CHECK AND TIGHTEN TRACK SHOE BOLTS
Method for tightening (shoe bolt)
Method for tightening (master link connecting bolt)
Order for tightening
CHECK ELECTRICAL INTAKE AIR HEATER
Before the start of the cold season (once a year), contact your Komatsu distributor to have the electrical intake air heater repaired or checked for dirt or disconnections.
REVERSE AND REPLACE THE END BITS AND CUTTING EDGES
WARNING: It is dangerous if the work equipment moves by mistake when the cutting edges and end bits are being reversed or replaced. Set the work equipment m a stable condition, then stop the engine and lock the blade control lever securely with the safety lever.
Reverse or replace the end bits and cutting edges before it is worn out to the blade end.
If the cutting edge and the end bit on both sides are worn out, replace with new one.
If it has been worn out up to the fitting surface, repair the fitting surface and then reverse or replace.
CLEAN, CHECK RADIATOR FINS
WARNING: If compressed air, steam, or water hit your body directly, there is danger of injury. Always wear protective glasses, mask, and safety shoes.
If the radiator fins are clogged or dirty, clean and inspect them.
REMARK: Check the rubber hose. If the hose is found to have cracks to be hardened by ageing, replace such hose with new one. Further, loosen hose clamp should also be checked.
ADJUST IDLER CLEARANCE
Since the idlers are forced to move forward and backward by an external force guide plates 2 will be worn out.
Wear of these plates will cause the vibration of idlers from side to side or inclination of the idlers, and running off of track links from the idlers or unevenly worn idler and links may result.
Therefore, adjust the idlers according to the following procedure.
REMARK: Thickness of one shim is 1.0 mm.
ADJUSTING TENSION OF CENTER BRACE (POWER TILT DOZER ONLY) (POWER TILT, POWER PITCH DOZER ONLY)
When the blade assembly is removed for transportation, the tension of the center brace must be adjusted when the blade is assembled again. If the tension is not adjusted, the bushing at the blade and straight frame mount will come out, and soil will enter. This will result in damage or premature wear of the bushing.
WARNING: Except when operating the blade in Step 4, always lock the blade control lever securely with the safety lever.
CLEAN AIR CONDITIONER AIR FILTER (FRESH/RECIRC FILTER) (MACHINES EQUIPPED WITH CAB)
If the air conditioner air filter is clogged or there is dirt or dust in it, clean the filter.
CHECK, ADJUST AIR CONDITIONER (MACHINES EQUIPPED WITH CAB)
CHECKING TENSION OF COMPRESSOR BELT
If the level of the refrigerant (gas) is low, the cooling effect will be reduced. Run the engine at high idling, and check the flow of the refrigerant in the refrigerant circuit through the sight glass of the receiver when the cooler is running at high speed.
REMARK: When there are bubbles, the refrigerant gas level is low, so contact your refrigerant dealer to have refrigerant added. If the air conditioner is run with the refrigerati gas level low, it will cause damage to the compressor.
GREASE DOOR HINGE (MACHINES EQUIPPED WITH CAB)
CHECK DOOR LOCK STRIKER (MACHINES EQUIPPED WITH CAB)
REPLACE DOOR DAMPER (MACHINES EQUIPPED WITH CAB)
CHECK WINDOW WASHER FLUID LEVEL, ADD FLUID (MACHINES EQUIPPED WITH CAB)
BLEED AIR FROM HEAD END OF RIGHT PITCH CYLINDER (POWER TILT, POWER PITCH DOZER ONLY)
REPLACE WIPER BLADE (MACHINES EQUIPPED WITH CAB)
Method of replacement
Front, rear wiper
CHECK IDLER OIL LEVEL, ADD OIL
If the oil level in the idler is low, noise will be generated and there will be seizure, so check the oil level and add oil as follows.
Source: MaintainX (Community Member)