. MAINTENANCE SERVICE PROCEDURE CLEAN ELEMENT IN AIR CONDITIONER RECIRCULATION FILTER (If equipped) CHECKING FUNCTION OF ACCUMULATOR For details of handling the accumulator, see Section "HANDLING ACCUMULATOR AND GAS SPRING (PAGE 2-42)". 4 - 49 Loosen knob (1 ), then remove filter inspection cov Remove filter (3 ) in the direction sh own by the arr Use compresse d air to clean the r same way as fo r the fresh air filter. er with a new part Replace the filt removed with co mpressed air, or if it has been use d for 1 year. REMARK If th e filter becomes clogged, the air flow will be reduced , and there will be an abnormal noise from the air conditioner unit .
BRAKE ACCUMULA TOR If th e engine stops w hen the machine is traveling, the oi l pressure in the accumulator can be used to apply the brake as a n emergency m easure. e on level ground and lower the work equipment completely to the ground. g brake. , run it at a mid-range speed for 1 minute, then stop the engine. switch key to the ON position and depress the brake pedal repeatedly. 1. 2. 3. 4.
Stop the machin e on level ground a nd lower the w ork equipm ent completely to the gro Apply the parkin Start the engine , run it at a mid-ran ge speed for 1 minute, the Turn the starting switch key to the ON position an d depress th e brake pedal repeatedl If the brake o il pressure caution l amp does not light up eve n when the brake is dep ressed 6 times, th e gas pressure in th e accumulator is no rmal. If the brake oi l pressure caution l amp lights up w hen the bra ke has been depressed 5 or less times, th e gas pressure in t accumulator i he accumulator has probably dropped. Please contact your Komatsu distributor to have the nspected. ped.
Pleas REMARK Car ry out the check within 5 minutes af ter stopping th e engine. If the machine is left with the engine stoppe d, the accumulator pressu re will drop and it w ill be impossibl e to check t he cause of the problem .