1.
Lower the tip of the ripper shank to the ground, and meas-
ure the minimum clearance (L) between the ripper point
and the point fixing pin.
2.
If the minimum clearance (L) is 0 mm and the ripper point
contacts the point fixing pin, replace the ripper shank.
Ask your Komatsu distributor for replacement of the ripper
shank.
REMARK
When assembling the new ripper shank and the ripper
point, default value of the clearance is 2.6 mm.
CHECKS BEFORE STARTING
For the following items, see OPERATION, “METHOD FOR CHECKING BEFORE STARTING (3-141)”.
• Drain water and sediment from fuel tank
• Check water separator, drain water and sediment
• Check oil level in hydraulic tank, add oil
• Check coolant level, add coolant
• Check oil level in engine oil pan, add oil
• Check oil level in power train case, add oil
• Check oil level in damper case, add oil
• Check dust indicator
• Check brake operation
• Check electric wiring
• Check fuel level, add fuel
• Check DEF level, add DEF
• Check that lamps light up
• Check machine monitor
• Remove deposit in engine compartment
• Check horn sound
• Check backup alarm sound
EVERY 250 HOURS MAINTENANCE
METHOD FOR LUBRICATING
1.
Lower the work equipment to the ground and stop the engine.
2.
By using a grease pump, pump in grease through the grease fittings shown by arrows.
3.
After greasing, wipe off any old grease that is pushed out.
• Greasing equalizer bar side pin (2 places)
1 place each on right and left of machine
MAINTENANCE PROCEDURE MAINTENANCE
4-44
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