8
SEASTAR Hydraulics
1
2
2
3
TAPPED
HOLES (3)
ENSURE QUAD RING SEALS
SEAT PROPERLY IN COUNTER
BORES ON RELIEF MODULE
Figure 5.
DC POWER STEERING UNIT
1.4 Relief Module Installation
• Remove steering cylinder from its packaging and inspect servo
valve block. The cylinder MUST have three tapped holes on the
face of the servo valve block as shown in figure 5 below. If the
servo valve block does NOT have these tapped holes contact
SeaStar Solutions Technical Support.
• Remove fittings from the PRS and TNK ports on the steering
cylinder servo block if required.
• Inspect valve block face. It MUST be free of ALL contaminants,
including thread sealant, debris, burrs, gouges or large
scratches. Clean as required.
• Install both quad rings (items #2) into relief valve module as
shown in Figure 5.
• Insert three (3) socket head cap screws (items #1) into relief
valve module (item #3) and fasten to front face of cylinder servo
valve as shown in Figure 5. Torque mounting bolts to 40 in.lb.
• Clean threads and apply a Teflon based, liquid pipe sealant to the
threads of the fittings that were removed in the second point
above. Install fittings into the ports on the relief module. DO NOT
USE TEFLON TAPE. Torque fittings to 200 in. lb.
WARNING
Ensure that the quad rings
remain seated in the relief
valve module and are not
pinched and/or rolled between
the module block and the
servo cylinder valve. Failure do
so will result in fluid leaks
causing property damage,
personal injury and/or death.
NOTICE
All cylinders manufactured
during or after January 2008
will have mounting provisions
for the relief module.
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