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Assembly procedures, Refer to figure 1), Dr-1 fluid regulator - maintenance – Ransburg DR-1 Fluid Regulator 74151 User Manual

Page 15

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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