4 - 5
Slew Motor Pressure Relief (continued)
9. Disassemble
a. Place the relief valve in a vice and remove the cap A
with a 14 mm A/F hexagonal socket, take out the
piston B, liner C, poppet E, shim F and spring D.
b. Remove the poppet E away from the seat G, and
spring D and add or remove a shim (as required by
the above calculation) between the spring D and
spacer.
c. After shim adjustment, install the poppet E, spring D,
shim(s) F, piston B and liner C onto the sleeve.
d. Fix the sleeve into a vice and install the cap A with a
torque of 156.9 Nm (115.17 ft).
10 a. Install the relief assembly in the slew motor unit, and
confirm the pressure.
b. If it is not within the setting pressure, repeat the
procedure from step 7.
Section E
Hydraulics
9803/6400
Section E
4 - 5
Issue 1
Pressure Testing
G
E
D
F
C
B
A
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