DR-1 Plastic Fluid Regulator - Operation
9
MAINTENANCE
PRELIMINARY PROCEDURES
Prior to removing the regulator for service or repair,
perform the following:
1. If possible, flush the regulator with suitable clean-
ing solvent.
2. Turn the fluid and air "OFF" to the regulator and
disconnect the air and fluid lines from the regula-
tor.
3. Remove the regulator for service.
DISASSEMBLY PROCEDURES
(Refer to Figure 1)
TOOLS REQUIRED
• 3/4-inch Open End Wrench
• Adjustable Wrench
• Screwdriver
• Repair Kit, 73913-01
1. Remove Item 4 (8-screws) holding the regulator
assembly together with the screwdriver.
2. Remove Item 1 (cap), Item 9 (diaphragm), spacer
ring assembly and the lower housing assembly.
>
Care MUST be taken while cleaning the coated
parts of the regulator to prevent scratching.
C A U T I O N
!
>
When separating parts it may be necessary to
use a small screwdriver. Care should be taken to
NOT damage the plastic components. Damage
of these parts may cause leakage.
C A U T I O N
!
>
Unless replacing the cap or spacer ring,
it is NOT necessary to remove the air fittings.
>
The regulating needle and seat are a
matched set with matching serial numbers.
Care must be taken to not use needles and
seats with non-matching serial numbers as
fluid leakage may occur. If either compo-
nent needs to be replaced, a new matched
set must be used.
NOTE
3. With screwdriver, remove Item 15 (screw) from
the spacer ring assembly.
4. Separate Item 6 (lower diaphragm retainer), Item
10 (o-ring), Item 8 (lower diaphragm), Item 16 (bleed
spacer), Item 14 (center diaphragm) and Item 5 (upper
diaphragm retainer) from the spacer ring assembly.
5. With the 3/4-inch open-end wrench, remove
Item 13 (retaining plug), Item 12 (spring) and Item
11 (regulating needle) from Item 3 (lower housing).
6. Remove Item 11 (regulating seat) and Item 10
(o-ring) from the lower housing assembly.
7. Clean all metal parts with suitable cleaning solvent.
DO NOT use solvent on the diaphragms or o-rings.
LN-9228-00.3
