Dive Gear Express DGX Gears FIRST, First Stage Service Manual, Page: 20 / 32

5. Regulator First Stage Assembly
(1) Before starting the assembly of the second stage, complete a thorough inspection of all parts to be
reused. Refer to the Overview Inspection section for details. At this time, open the service kit and lay
out the parts. Use the schematic to identify each part. The service parts kit includes one low-pressure
O-ring (11*) for use on the OPV included with most packages, plus one high-pressure O-ring (13*) for
use on the SPG included with most packages. Additional LP or HP O-rings are not included and should
be supplied as needed from your bench consumables.
Caution Note: Only use enough lubricant to lightly coat the O-rings and ensure no
debris is trapped on them.
1. The first step in the assembly of the now cleaned first stage is to lubricate and install the O-ring (20*)
on the Piston - Fig. 23.
Fig. 23