Terex RT700 - Page 106

TROUBLESHOOTING
RT700 Series Page 5 - 7 Issued: August 2003
DRIFT
VEHICLE VEERS SLOWLY IN ONE DIRECTION
-CAUSE- -REMEDY-
Leaking cylinder seals.............................................................................................Reseal cylinders.
Worn or damaged steering linkage..........................................................................Replace linkage and align front end.
SLIP
A SLOW MOVEMENT OFSTEERING WHEEL FAILS TO
CAUSE ANY MOVEMENT OF STEERED WHEELS
-CAUSE- -CAUSE-
Leakage of cylinder piston seals or accessory
valve between cylinder lines or ports......................................................................Replace seals or accessory valve.
Worn steering control unit meter ............................................................................Replace steering control unit.
TEMPORARY HARD STEERING OR HANG-UP
-CAUSE- -REMEDY-
Thermal Shock* ......................................................................................................Check unit for proper operation and
cause of thermal shock.
ERRATIC STEERING
-CAUSE- -REMEDY-
Air in system due to low level of oil,
cavitating pump, leaky fitting, pinched hose, etc....................................................Correct condition and add fluid.
Loose cylinder piston ..............................................................................................Replace cylinder.
Thermal shock damage*..........................................................................................Replace steering control unit.
Sticking flow control spool .....................................................................................Replace flow control valve.
“SPONGY” OR SOFT STEERING
-CAUSE- -REMEDY-
Air in hydraulic system. Most likely air
trapped in cylinders or lines ....................................................................................Bleed air out of system.
Low fluid level ........................................................................................................Add fluid and check for leaks.