Komatsu Galeo PC800-8 Shop Manual page 356

SEN00788-02
3. Adjusting main relief valve (high-pressure
setting) of right 4-spool control valve
a If the work equipment oil pressure in the rear
pump circuit (during heavy lift operation) and
the right travel oil pressure are abnormal, ad-
just the high-pressure setting side of main
relief valve (13) of the right 4-spool control
valve according to the following procedure.
a Adjust the right 4-spool control valve similar-
ly to the left 5-spool control valve.
4. Adjusting main relief valve (low-pressure set-
ting) of right 4-spool control valve
a If the work equipment oil pressure in the rear
pump circuit (during normal relief operation)
is abnormal or the high-pressure setting side
was adjusted, adjust the low-pressure set-
ting side of main relief valve (13) of the right
4-spool control valve according to the follow-
ing procedure.
a Adjust the right 4-spool control valve similar-
ly to the left 5-spool control valve.
8
5. Adjusting swing motor safety valve
a If the relief pressure of the swing motor is ab-
normal, adjust safety valves (14) and (15) of
the swing motor according to the following
procedure.
• (14): Safety valve of front swing motor
• (15): Safety valve of rear swing motor
30 Testing and adjusting
PC800, 850-8