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Document XLDS Guide – Section Four A
Revised September 30, 2019
39
SECTION FOUR A: RDC REPAIR / MAINTENANCE / OVERHAUL
This lubricant will aid in getting the O- ring (12) in
place.
5. Install O-ring (12) into the recess area
of the top of the piston, and work it into
the recess then install the washer (13),
and nut (14), then tighten the nut until it
bottoms out against the piston.
6.
Slightly
moisten
O-ring
(16),
with
Christo Lube on the new seat (15), then
install the seat into the large opening end of
the regulator body, then press it in using the
3/8” wooden dowel. Figure 69.
Figure 69
7. Pack the piston assembly spring with Silicone
grease. Ensure the grease gets worked in
around the coils, so that the entire spring
area is filled with grease.
Figure 70
Figure 71
8. Insert the piston assembly into the bore of the
piston cap (17), and press the piston assemble
all the way down.
Figure 72
9. Wipe clean any excess grease from the cone
and disc using the lint free cloth.
10. Insert the piston assembly with the piston into
the regulator body, and thread the piston cap
into the body, until it bottoms out then
tighten to 150 inch lbs.
NOTICE
Install the new seat with O-ring into the regulator
body with the cone side of the seat facing down,
toward the ½”-20 port. While it might appear that
the cone side of the seat, and the cone on the
poppet shaft should go together, this is not the
case. The flat side of the seat, is the side that seals
against the poppet.