Procedure for Steering Relief Valve Pressure Test:
Make sure hydraulic oil is at normal operating tem-
perature by operating the machine under load for
approximately 10 minutes.
12.If specification is not met, repair or replace steering
control valve (relief valve in steering control valve is not
replaceable).
1.
13.After testing is completed, make sure that engine is
stopped, then relieve hydraulic system pressure (See
Relieving Hydraulic System Pressure in the General In-
formation section of this chapter). Remove tee fitting
and pressure gauge from hydraulic hose and steering
cylinder. Connect hydraulic hose to steering cylinder fit-
ting.
2.
loweredandPTOswitchoff.Makesureengineisoff.Ap-
ply the parking brake.
Parkmachineonalevelsurfacewiththecuttingunits
3.
Read Precautions For Hydraulic Testing in this sec-
tion.
CAUTION
1
Before opening hydraulic system, operate all hy-
draulic controls to relieve system pressure and
avoid injury from pressurized hydraulic oil. See
Relieving Hydraulic System Pressure in the Gen-
eral Information section of this chapter.
4.
at the rod end of the steering cylinder (Fig. 48).
Thoroughlycleantheareaaroundthehydraulichose
2
5.
Remove hydraulic hose from the fitting on the rod
end of the steering cylinder.
Figure 48
6.
Installateefittingbetweenthedisconnectedhydrau-
1.
Steering cylinder
2.
Rod end fitting
lic hose and the steering cylinder fitting. Install a 5000
PSI (350 bar) pressure gauge to the tee fitting.
7.
at idle speed. Check for any hydraulic leakage from test
connections and correct before proceeding with test.
After installing pressure gauge, start engine and run
8.
Move throttle to full speed (3200 RPM).
IMPORTANT: Hold steering wheel at full lock only
long enough to get a system pressure reading.
Holding the steering wheel against the stop for an
extended period may damage the steering control
valve.
9.
steering wheel for a left hand turn (counter--clockwise)
and holding.
Watch pressure gauge carefully while turning the
10.System
pressure should be approximately 1000 PSI
bar) as the relief valve lifts. Return steering wheel to
the neutral position.
(69
11.
Shut off engine. Record test results.
Reelmaster 5010 Series
Page 4 -- 51 Rev. B
Hydraulic System
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