3. STEERING SYSTEM RESTRICTION TEST 3. STEERING SYSTEM RESTRICTION TEST В SPECIFICATION SPECIFICATION Oil temperature 45 Ь 5 C (113 Ь 9 F) Engine speed High idle Maximum pressure 35 bar ( 510 psi) at steering unit В GAUGE AND TOOL GAUGE AND TOOL Gauge 0~7 MPa (0~70 bar , 0~1000 psi ) 2EA В This test will check for restrictions in the steering system which can cause overheat- ing of hydraulic oil. 1) Install temperature reader. (see temperature reader installation proce- dure in this group). P 2) Heat hydraulic oil to specifications. (see hydraulic oil warm up procedure at page 6-58). A 3) Connect fitting (A) 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 unit, inspect priority spool in MCV for a stuck spool. Make sure orifice plugs are installed in ends of priority spool. Check for plugged orifice in priority spool SX port of MCV. 74033ASE16 5-18