3. STEERING SYSTEM RESTRICTION TEST 3. STEERING SYSTEM RESTRICTION TEST 余 SPECIFICATION SPECIFICATION Oil temperature 45 佳 5 C (113 佳 9 F) Engine speed High idle Maximum pressure 4.5 MPa (45 bar , 640 psi ) at steering valve (EHPS) 余 GAUGE AND TOOL GAUGE AND TOOL Gauge 0~7 MPa (0~70 bar , 0~1000 psi ) 2EA 余 This test will check for restrictions in the steering system which can cause overheat- ing of hydraulic oil. Steering pump 1) Install temperature reader. (see temperature reader installation proce- dure in this group). Fitting 2) Heat hydraulic oil to specifications. (see hydraulic oil warm up procedure at page 6-55). P 3) Connect fitting and install gauge.
Do not operate steering or loader funct- Do not operate steering or loader funct- ions or test gauge may be damaged. ions or test gauge may be damaged. 4) Run engine at specification and read pres- sure gauges. If pressure is more than specification at the steering valve, inspect steering valve for a priority valve spool. Make sure orifice plugs installed in ends of priority valve spool. 7607SE24 5-24