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475 A CRL
800-00167
BOOM AND TRAVEL FUNCTION VALVES
BOOM AND TRAVEL FUNCTION VALVES
BOOM AND TRAVEL FUNCTION VALVES
BOOM AND TRAVEL FUNCTION VALVES
BOOM AND TRAVEL FUNCTION VALVES
The most important servicing required on the Boom & Travel Function Valves is the pressure setting. Each
valve "bank" has a Main Relief witha special setting, and Port Reliefs with different settings for each one. The
following is a list of pressure settings along with a diagram to show where each setting is applied.
Main Boom - up (butt end of main boom cylinder) ............................. 4800
PSI
at the Port Relief
Main Boom - down (rod end of main boom cylinder) .......................... 3300
PSI
at the Port Relief
.........................................................................................................
Secondary Boom - up (butt end of secondary boom cylinder) ............ 5600
PSI
at the Port Relief
Secondary Boom - down (rod end of secondary boom cylinder) ........ 4800
PSI
at the Port Relief
Live Heel Boom - up (rod end of live heel boom cylinder) ................. 5600
PSI
at the Port Relief
Live Heel Boom - down (butt end of live heel boom cylinder) ............. 1850
PSI
at the Port Relief
Main Reliefs ...................................................................................... 4600
PSI
HYDRAULIC PRESSURE SETTINGS CONTINUED...
48004800480048004800
NONENONENONENONENONE
NONENONENONENONENONE
33003300330033003300
NONENONENONENONENONE
MAINMAINMAINMAINMAIN
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
4600 PSI MAIN RELIEF
FAST STICK LINE
FAST STICK LINE
FAST STICK LINE
FAST STICK LINE
FAST STICK LINE
TRAVELTRAVELTRAVELTRAVELTRAVEL
SECSECSECSECSEC
NONENONENONENONENONE
NONENONENONENONENONE
SECSECSECSECSEC
TRAVELTRAVELTRAVELTRAVELTRAVEL
NONENONENONENONENONE
48004800480048004800
56005600560056005600
56005600560056005600
18501850185018501850
HEELHEELHEELHEELHEEL