CLEAN INSIDE OF COOLING SYSTEM
CLEAN INSIDE OF COOLING SYSTEM
Use a permanent type of antifreeze.
If, for some reason, it is impossible to use permanent type antifreeze, use an antifreeze containing ethylene glycol.
Super Coolant (AF-ACL) has an anti-corrosion effect as well as an antifreeze effect.
The ratio of antifreeze to water depends on the ambient temperature, but to obtain the corrosion resistance effect, a minimum ratio of 30% by volume is necessary.
When deciding the ratio of antifreeze to water, check the lowest temperature in the past, and decide from the mixing rate table given below.
It is actually better to estimate a temperature about 10oC lower when deciding the mixing rate.
Use city water for the cooling water. If river water, well water or other such water supply must be used, contact your Komatsu distributor. We recommend use of an antifreeze density gauge to control the mixing proportions.
Prepare a container to catch drained coolant: Min 101 liters capacity.
CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT
CLEAN, REPLACE OUTER ELEMENT
Direct dry compressed air (less then 700 kPa (7 kg/cm2 , 100 psi)) to the element from inside along its folds,then direct it from outside along its folds and again from inside.
REPLACING INNER ELEMENT
CHECK ELECTRICAL INTAKE AIR HEATER
CHECK TRACK TENSION
When increasing tension
When loosening tension
When removing track
CHECK AND TIGHTEN TRACK SHOE BOLTS
Method for tightening (shoe bolt)
Method for tightening (master link connecting bolt)
Order for tightening
REVERSE AND REPLACE THE END BITS AND CUTTING EDGES
Reverse or replace the end bits and cutting edges before it is worn out to the blade end.
The symbols in the work equipment column have the following meaning.
If bolt (2) and nut (1) are damaged, replace them with new ones at the same time.
Loosen nuts (1), remove bolts (2), then replace or reverse the cutting edge.
CLEAN, CHECK RADIATOR FINS
If the radiator fins are clogged or dirty, clean and inspect them.
REPLACE AIR CONDITIONER BELT
Replace the V-belt.
Tighten jack bolt (2) and bolts (1), and apply tension to the V-belt.
CLEAN, CHECK HYDRAULIC COOLER FINS
If the hydraulic cooler fins are clogged or there is dirt caught in the fins, clean and check the fins.
Set the hinge pin in position.
When fixing the hydraulic cooler in position again:
CLEAN, CHECK AIR CONDITIONER CONDENSER FINS
If the air conditioner condenser fins are clogged, clean and check the fins.
ADJUST IDLER CLEARANCE
CHECK UNDERCARRIAGE OIL
Stop the machine on level ground, and check for any reduction in the oil at the idler (portion P), track roller (portion Q), bogie shaft (portion Q), and carrier roller (portion R).
CLEAN AIR CONDITIONER AIR FILTER
If the air conditioner air filter is clogged or there is dirt or dust in it, clean the filter.
If the clogging of the filter cannot be removed by blowing with compressed air or washing in water, replace the filter with a new part.
CHECK, ADJUST AIR CONDITIONER
CHECKING TENSION OF COMPRESSOR BELT
CHECK LEVEL OF REFRIGERANT (GAS)
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.
GREASE DOOR HINGE (MACHINES EQUIPPED WITH CAB)
CHECK DOOR LOCK STRIKER (MACHINES EQUIPPED WITH CAB)
CHECK DOOR LATCH
REPLACE DOOR DAMPER (MACHINES EQUIPPED WITH CAB)
CHECK WINDOW WASHER FLUID LEVEL, ADD FLUID (MACHINES EQUIPPED WITH CAB)
REPLACE WIPER BLADE (MACHINES EQUIPPED WITH CAB)
Method of replacement
Front, rear wiper
PROCEDURE FOR BLEEDING AIR IN HYDRAULIC SYSTEM
Bleeding air from cylinders
PROCEDURE FOR RELEASING INTERNAL PRESSURE OF HYDRAULIC SYSTEM
Run the engine at low idling for about 5 seconds, and stop the engine. Move the blade control lever to back- ward, forward, right and left.
CHECK BEFORE STARTING
Source: MaintainX (Community Member)