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PILOT PRESSURE REGULATING VALVE TEST AND ADJUSTMENT - Continued
VALVE SPOOL ACTUATING PILOT PRESSURE TEST

Maintenance Manual For Hydraulic Excavator Model 230Lcr
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TM 5-3805-280-24-1
Tests
Per 0.25 mm (0.010 in.) Shim Approximate Change--Specification
Pressure ........................................................... 78 kPa (0.75 bar) (11 psi)
Per 0.5 mm (0.020 in.) Shim Approximate Change--Specification
Pressure ......................................................... 157 kPa (1.57 bar) (23 psi)
Per 1.0 mm (0.040 in.) Shim Approximate Change--Specification
Pressure ......................................................... 304 kPa (3.04 bar) (44 psi)
TX,9025,GG2646 1908JUN985/6
7. As necessary, remove plug for pilot pressure regulating
valve (A). Add shims (E) to increase pressure; remove
shims to decrease pressure.
8. Tighten plug.
Plug-to-Pilot Pressure Regulating Housing--Specification
Torque .......................................................................... 25 Nm (215 lb-in.)
9025
A--Pilot Pressure Regulating Valve
25
E--Shims
62
TX,9025,GG2646 1908JUN986/6
6-193


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