User Manual
Greasehead
145-2884-HV0
OPS-2884 Rev E
8
4.3.1 Replacing the Saver Sub
It is not expected that the saver sub would need to be replaced during normal
operations but if damage occurs to a pressure fitting or a leak is found during
pressure testing then this procedure should be followed.
•
Ensure that the pressure is bled off.
•
Do not remove the pressure fittings at this time as they can be used to
provide grip to remove the plug.
•
Remove the two socket head cap screws and lock washers. (If they
appear unusually tight or difficult to move re-check that the pressure
has been removed).
•
Grip the pressure fitting and pull out the saver sub with a pulling and
rocking motion. If the pressure fitting has been removed already then
two ¼-20 UNC screws (not supplied) can be used to jack out the sub.
•
Inspect the o-ring for signs of damage and replace if necessary
•
Inspect the seal bore for signs of damage and report if necessary
•
If required, remove the pressure fitting – clean and inspect the pressure
port.
•
To re-fit the sub apply grease to the o-ring and seal bore.
•
Push the sub into the bore by hand as far as possible, ensuring that the
part is centralised in the bore.
•
Fit the screws and washers and tighten to drive the o-ring into the bore.
Make up each screw equally to ensure that the sub does not become
twisted.
•
Fully tighten the screws.
4.3.2 Removing the Check Valve Components
This will be required if the injection Check Valve Saver Sub is being moved to
the return port to provide a right angled port. The check valve can be re-
instated by following the procedure in reverse.
•
With the check valve sub removed from the body
•
Unscrew the Hollow Hex Plug using a suitable hex key
•
Remove the spring and check valve and store in a safe place
•
Replace the Hollow Hex Plug to act as a thread protector
•
Refit the Check Valve sub to the required port.