Lit. No. 30118, Rev. 00
June 15, 2020
79
Relief valve RV2 and components are not
interchangeable with the other relief valves.
NOTE: The spring for relief valve RV2 is
di
ff
erent from the other springs and should not
be interchanged. The RV2 spring is made of a
lighter wire and is gold in color.
Inspection
1. Remove the valve stem, ball, spacer, and
spring.
2. Look for broken or damaged parts,
contamination, or missing or damaged O-rings.
3. If all the parts are in good condition, place the
ball on a hardwood block, hold the stem seat
on the ball, and lightly strike the top of the
stem with a hammer. This will seat the ball and
valve stem.
4. Apply a light coat of anti-seize lubricant or
grease to the stem threads. Lubricate the
O-rings with hydraulic
fl
uid. Reassemble the
components into the valve block.
Adjustment
1. Screw the valve stem inward until the spring is
fully compressed.
2. Back out the valve stem by turning it
counterclockwise (CCW) the number of turns
indicated in the table.
CAUTION
Be careful to strike the valve stem squarely.
You can bend the stem if you do not strike
it squarely.
CAUTION
Never operate the unit while adjusting the
relief valve. Doing so will damage the relief
valve O-rings.
TROUBLESHOOTING
RELIEF VALVE INSPECTION AND ADJUSTMENT
Relief Valve
Approx.
Pressure
# of Turns CCW
from Fully Seated
RV1
Pump
2250 ± 100 psi
2
RV3
DS Ram Rod End
2200 ± 100 psi
2-5/8
RV4
PS Ram Rod End
RV5
DS Ram Base End
3400 ± 100 psi
1-3/8
RV6
PS Ram Base End
Primary
Manifold
Secondary
Manifold
RV3
Pressure
Test Port
RV4
RV5
RV6
RV1
Ball
Valve Stem
w/O-Rings
Spacer
Spring
Содержание RDV V-Plow
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