Case IH AFX8010 Repair Manual page 82

DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
# 3 Steering Relief Setting
This test is used to determine the relief valve setting
of the steering signal circuit. The steering signal relief
valve is set to provide an operating pressure of
182.7--189.6 bar (2650--2750 psi). If the steering
signal is too high the steering circuit can limit or
completely stop the oil flow to the other hydraulic
functions.
Test Procedure
Attach a 345 bar (5000 psi) gauge to the pump
pressure DIAG port located on the Main Valve Stack.
With the engine at low idle, turn the steering wheel
until the steering stops are reached and hold the
wheel. The relief valve in the steering hand pump will
open. The reading on the gauge should be between
182.7--189.6 bar (2650--2750 psi).
The relief is located in the steering hand pump and
is set from the factory. If adjustment is needed, the
steering hand pump must be removed from the
combine. The relief valve adjustment is an allen plug
located on the mounting surface of the hand pump.
The plug will be filled with wax. After removing the
wax, turn the threaded plug in to increase the relief
valve setting, and out to decrease the setting. After
the adjustment has been made, the test should be
repeated to verify the spring setting. Before installing
the hand pump in the combine, replace the wax with
LOCTITE to prevent the adjusting plug from moving.
NOTE: Steering from full RIGHT to full LEFT should
take approximately 4.5 turns. If the steering system
requires more turns, it could be a sign of a hand pump
that has too much internal leakage or a steering
cylinder with internal leakage. When holding the
steering wheel against the stop, continue to apply
normal steering pressure on the wheel, there should
not be more then approx. 1.5 wheel rotation per
minute due to internal leakage.
A.10.A / 66