Shibaura ST330, Workshop Manual

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164
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4) Pressure adjustment of relief valve
① Remove the oil pressure take-out plug (3/8 NPTF)
from the port C1 (see the right figure).
② Install a pressure gauge 19.6 MPa {0 - 200 kgf/c
㎡
} to the port C1.
③ Start the engine and increase the speed.
④
Set the change over valve at the S (closed)
position and read the indication on the pressure
gauge. (Complete in a short time.)
Relief set pressure
14.7 － 15.2 MPa
{150
－
155 kgf/c
㎡
}
⑤
Adjust the set pressure by increase or decrease the
number of shims as shown in the right figure.
The pressure varies about 0.26MPa { 2.7 kgf/c
㎡
} :
by 0.1 mm of shims.
NOTE:
1. A kit (No. 340293230) contains 3 shims of 0.1
mm × 2 and 0.15 mm × 1 in thickness
respectively (3 in total).
2. Remove the pressure gauge, wind seal tape on
the plug and install taking care not to allow
the seal tape to enter the hydraulic piping.
484Y
485Y
486Y
487Y