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3 - Once the oil has been drained, disconnect the suction
pipe (3) and remove the flange (4) after removing the
screws (5). Use a 17 mm hexagon spanner.
4 - Clean the filtering element (6).
5 - Put back the flange (4), the filter (6), the gasket (7) and
the lower plug (2).
6 - Fill the tank with the prescribed oil until reaching the level
(8). Use only the prescribed type of oil (see "4.3 FUEL,
COOLANT AND LUBRICANTS").
7 - Raise the cab (see "3.5.3.1 RAISING THE CAB") sure
that the oil in the hydraulic pump reaches the maximum
level. To do this, remove the upper plug (9 and make sure
that the hole is completely filled with oil. Use a 1/2" square
section spanner.
8 - If the oil does not reach the maximum level, top up with
the prescribed oil (see "4.3 FUEL, COOLANT AND LU-
BRICANTS").
9 - After the check, lower the cab, screw the filling cap (1),
close the rear panel and the engine hood and deaerate
the system.
10 - Make sure that all the control levers are in neutral position
and let the engine idle for 2-3 minutes before operating
the work equipment.
Move each piston more than once to deaerate the sy-
stem; check again and top up if necessary.
Never start the engine with empty tank, since this would
q
certainly damage the pump.
4.8.9.c
CHECKING AND ADJUSTING THE ENGINE VALVE CLEARANCE
Since the check and adjustment of the engine valve clearance require the use of special tools, have these opera-
tions carried out by your Komatsu Dealer.
CAUTION
MAINTENANCE PROCEDURE
3
4
6
7
5
RWA36400
RWAA10130
8
RWAA12570
9
RWAA12580
199
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