Maintenance; Tools Required; Preliminary Procedures; Disassembly Procedures - Ransburg DR-1 Service Manual

EN

MAINTENANCE

TOOLS REQUIRED

• 3/8", 7/16", 7/8", and 15/16" Open-End Wrenches
• 5/32" Allen Head Wrench
• Adjustable Wrench
• Screwdriver
• Repair Kit, 73913-00 or 73913-01

PRELIMINARY PROCEDURES

Prior to removing the regulator for service or repair, perform
the following:
1. If possible, flush the regulator with suitable cleaning
solvent.
2. Turn the fluid and air "OFF" to the regulator and
disconnect the air and fluid lines from the regulator.
3. Remove the regulator for service.

DISASSEMBLY PROCEDURES

(Refer to Figure 1)
NOTE
† Unless replacing Item 1 (cap) and/or Item 2
(spacer ring), it is NOT necessary to remove Item 18
(air fitting) and Item 15 (gasket).
† Item 11 (regulating needle and seat) is a
matching 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 component needs to be replaced, a
new matched set must be used.
1. Remove Item 4 (8 screws) holding the regulator assembly
together with the 5/32" Allen wrench.
LN-9223-00-R12 (04/2018)
2. Remove Item 1 (cap), Item 9 (upper diaphragm), Item
2 (spacer ring), and Item 3 (lower housing assembly).
This will leave the diaphragm assembly Item 5 (upper
diaphragm retainer), Item 14 (center diaphragm), Item 7
(center diaphragm retainer), Item 17 (bleed spacer), Item
8 (lower diaphragm), Item 10 (o-ring), and Item 6 (lower
diaphragm retainer) held together by Item 16 (screw).
† When separating parts it may be necessary to
use a small screwdriver. Care should be taken to
NOT damage the components. Damage of these
parts may cause leakage.
3. With a screwdriver, remove Item 16 (screw) from the
diaphragm assembly.
4. Separate Item 6 (lower diaphragm retainer), Item 10
(o-ring), Item 8 (lower diaphragm), Item 17 (bleed
spacer), Item 14 (center diaphragm), and Item 5 (upper
diaphragm retainer).
5. With the 7/8" and the 15/16" open-end wrenches,
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.
† Care MUST be taken while cleaning the coated
parts of the regulator to prevent scratching.
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MAINTENANCE
CAUTION
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CAUTION
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