EN D 031 Rev D
Page 10 of 17
4.
Install fill plug.
5.
Open shutoff valve one turn.
Regulator/Filter Maintenance
1.
Open petcock at bottom of the bowl and drain accumulated water.
2.
Remove filter element and clean every 3 months or more often if required.
Caution
: Plastic bowl can be damaged and fail if strong solvents are used for cleaning.
3.
Use soap and warm water to clean the filter bowl.
Bushing Replacement
Use the following steps as a guide. Refer to the data sheet for a visual aid.
1.
Use the pneumatic/hydraulic system to hold the slip bodies in the raised position.
2.
Remove the slip assemblies per the instructions found in the operation section.
3.
Release the pressure on the cylinder allowing it to extend. Bleed any remaining pressure
out of the cylinder.
4.
Loosen and remove the nut on the bolt that pins the cylinder yoke to the link. Remove
the bolt, and rotate the cylinder so that the yoke is away from the link.
5.
The link is held onto the left and right hand crank shafts by two external retaining rings.
Remove these rings so the link can be removed.
6.
There are two bushings in the link. Using a press or bushing puller, remove these
bushings from the link and discard. Install two new bushings into the link. Set the link
aside.
7.
Rotate the lift arms so the taper pins are exposed. These taper pins connect the lift arms
to the crank shafts. Drive out the taper pins and set aside.
8.
Loosen and remove the set screws that hold the lift arms to the crank shafts. Set the set
screws aside.
9.
Remove the crank shafts from the spider by lightly tapping the ends. Set these aside
along with the lift arms and spacers.
10.
Bushings are located in the spider body in four locations. Using a press or bushing
puller, remove these bushings from the body and discard. Install four new bushings into
the body.
11.
Reassemble the Tubing Spider (page 12).
Crank Shaft and Lift Arm Replacement
Use the following steps as a guide. Refer to the data sheet for a visual aid. This procedure can be
difficult, if there are any doubts to the successful completion of the repair, consult with an
authorized repair facility.
1.
Replace the old cranks shafts and lift arms with new ones using the instructions in the
bushing replacement section. Reassembly will stop when the taper pins are to be
installed. The replacement crank shafts do not have holes drilled through them.
