Hyundai HL955 Manual page 428

3. STEERING SYSTEM RESTRICTION TEST 3. STEERING SYSTEM RESTRICTION TEST
·
SPECIFICATION SPECIFICATION
Oil temperature
Engine speed
Maximum pressure 4.5MPa (45 bar, 640psi)
at steering valve (EHPS)
·
GAUGE AND TOOL GAUGE AND TOOL
Gauge 0~7 MPa (0~70 bar, 0~1000 psi) 2EA
·
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).
2) Heat hydraulic oil to specifications.
(see hydraulic oil warm up procedure at
page 6-55).
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.
plugs installed in ends of priority valve spool.
45±5˚C (113±9˚F)
High idle
Make sure orifice
Steering pump
Fitting
P
5-24
7607SE24