Assembly procedures, Refer to figure 1), Dr-1 fluid regulator - maintenance – Ransburg DR-1 Fluid Regulator 74151 User Manual
Page 15
ASSEMBLY PROCEDURES
(Refer to Figure 1)
1. Inspect Item 11 (regulating needle and seat) for
damage. If either of these items are damaged or the
mating surfaces are scratched, both items should be
replaced as a matching set.
2. Discard the following items and replace them with
the new item from the 73913-00 or 73913-01 repair
kit:
Item 16
Screw
Item 10
O-Ring
Item 9
Upper Diaphragm
Item 14
Center Diaphragm
Item 8
Lower Diaphragm
3. Place Item 10 (o-ring) in the slot on Item 6 (lower
diaphragm retainer).
4. Place Item 8 (lower diaphragm) on Item 6 (lower
diaphragm retainer) with the side of the diaphragm
contacting the retainers (o-ring side).
5. Stack the following parts on Item 8 (lower dia-
phragm), in the following order:
Item 7 (Center Diaphragm Retainer)
Item 18 (Bleed Spacer)
Item 14 (Center Diaphragm)
Item 5 (Upper Diaphragm Retainer)
Item 16 (Screw)
6. Ensure that clearance holes in Items 8 and 14
(diaphragms) and Item 17 (bleed spacer) are aligned
properly and tighten Item 16 (screw). Use Loctite
222 on screw threads. Set the diaphragm assembly
aside.
7. Place Item 3 (lower housing) on table with bottom
threaded opening facing "UP".
8. Insert Item 10 (o-ring) onto Item 11 (regulating
seat) and then insert the assembly into Item 3 (lower
housing). The beveled side of the regulating seat
must be "UP".
DR-1 Fluid Regulator - Maintenance
12
9. Place Item 11 (regulating needle) into Item 3 (lower
housing) with the ball end against Item 11 (regulating
seat).
10. Place Item 10 (o-ring) on Item 13 (retaining
plug).
11. Place Item 12 (spring) into Item 3 (lower
housing) over Item 11 (regulating needle) and
thread Item 13 (retaining plug) into Item 3 (lower
housing). Tighten Item 13 (retaining plug) to 25-30
lbs•ft, ensuring that Item 11 (regulating needle) and
Item 12 (spring) remain in the center of Item 3 (lower
housing).
12. Place Item 3 (lower housing) on table with bowl
facing "UP" and place diaphragm assembly (from
step 4) into bowl of Item 3 (lower housing), with pin
of Item 6 (lower diaphragm retainer) facing "DOWN".
Rotate the diaphragm assembly so that the slot on
Item 6 (lower retainer) is 180
o
to the outlet port of
Item 3 (lower housing) for cleaner flushing of the
regulator assembly.
>
DO NOT scratch the coating.
C A U T I O N
!
>
Apply a small amount of non-silicone lu-
bricant to Item 10 (o-ring) prior to assembly.
NOTE
>
Verify regulator seat and needle have
matching serial numbers.
C A U T I O N
!
LN-9223-00.10