Crown's pump pressure systems offer reliable readings with little to no maintenance. However, when you need to recharge your system, it is important to follow these steps to make sure that your gauge is filled with the right amount of fluid. In doing so, you will have the most accurate readings from your pump pressure system. For more information visit our website athttps://www.drillinginstruments.com/how-to-recharge-a-pump-pressure-system/

1. HOW TO CHARGE
A PUMP PRESSURE SYSTEM

2. Fluid Levels
Damper
Assembly and
Sensitivity
Inspect Gauge
Protector for
Cracks, Cuts,
Dents, Leaks
Inspect
Hydraulic
Hoses for Cuts,
Cracks, Kinks
Inspect Hose
Connections
Check
Regularly
Inspect Gauge,
Broken Glass,
Loose Pointers
Loose Knobs Follow these steps to ensure that
pump pressure systems operate at
peak efficiency. To maintain proper
pressure and to protect diaphragm
rubber, systems must be full of
hydraulic fluid at all times.
Remember to check the components
to the left regularly.
Operator must remove pressure from gauge before starting steps below.

3. STEP ONE
Remove the cap from
check valve on the
diaphragm protector.
Diaphragm Protector (CD106)
Check Valve (CC102)
Check Valve
Cap

4. STEP TWO
Attach aluminum
hand pump to the
check valve.
Do not tighten
swivel completely.
Aluminum Hand Pump
(CH103)
Swivel
Reservoir

5. STEP THREE
Fill the hand pump
reservoir with
Crown’s red
hydraulic fluid.
Aluminum Hand Pump
(CH103)
Swivel
Reservoir
Crown Hydraulic Fluid
(CW15)

6. STEP FOUR
Push on the hand
pump plunger to
move the hydraulic
fluid towards the
system. Air
bubbles will
emerge between
the hand pump and
check valve.
Aluminum Hand Pump
(CH103)
Swivel
Reservoir
Plunger

7. STEP FIVE
Once you see a small
amount fluid coming
out of the connection
completely tighten
swivel to the check
valve. There should
be no bubbles coming
out of the connection
at this point.
Fluid in
connection
Diaphragm Protector (CD106)
Aluminum Hand Pump
(CH103)

8. STEP SIX
Remove the 1/8’
pipe plug in the
gauge, making sure
to tape the thread
with Teflon tape.
Recharge Kit (CK100)
Teflon Tape

9. STEP SEVEN
Turn diaphragm
protector upside
down so that you can
see the diaphragm
rubber.
Diaphragm Protector (CD106)
Rubber Cup Diaphragm

10. STEP EIGHT
Pump hydraulic
fluid into the
system until the
rubber collapses
its side together at
approximately 38
PSI. The
diaphragm sides
will be just
touching each
other.
Rubber cup will collapse and
sides will be just touching at
approximately 38 psi.

11. STEP NINE
Remove the hand
pump from the check
valve.
Aluminum Hand Pump
(CH103)
Check Valve (CC102)

12. Replace the check
valve cap.
STEP TEN
Check Valve
Cap