Mani~woc Engineeri, ngCo.
Where room permits, the pressure regulating
valve can be overhauled wlthout disturbing
the hose connections. Inlet air pressure
must be exhausted to prevent possible
personal injury from high pressure.
i. Refer to Figure
2
and disassemble the
valve. To insure proper reassembly,
note the orientation of the ports in
inlet body (4) and outlet body (13).
2. To simplify overhaul, it is recommended
that a new valve cartridge (7) be in-
stalled. If desired, however, the
metal parts can be reused (if not
damaged) and the internal seals can be
replaced separately.
3. Wash all metal parts with a good
cleaning solvent and thoroughly dry.
Pay particular attention to air
passages and orifices to make sure they
are free of obstructions.
4. It is reco-,-anded that all seals be
replaced; however, seals that are reused
should be carefully washed with mild
soap and water and wiped dry. DO NOT
reuse seals found to be defective.
5. Carefully inspect all metal parts for
cracks, score marks and corrosion--
replace defective parts.
6. Lightly lubricate all parts with a
quality pne,-,-tic grease (i.e., Dow
Coming #55).
7. Reassemble the valve as illustrated.
Take extreme care not to d~m~ge rubber
parts as assembly progresses.
Securely tighten screws (6) evenly.
8. Build system pressure to normal and
check the valve for leaks and proper
operation.
LEGEND FOR FIGURE 2
i. Push Rod
2. Nut
3. Rod Guide
4. Inlet Body
5. Inlet Screen
6. Screws (i0 ea.)
7. Valve Cartridge
a. Piston
b. Sleeve
c. Cage
d. Barrier Plate
e. Support Disc
f. Retaining Ring
g. Spring
h. Poppet Support
i. Disc Ring
j. Retaining Ring
8. Balance Piston
9. Spring Booster (If Equipped)
I0. Balance Spring
I I "i Shim
12. Gauge Plug
13. Outlet Body
• 14. Filter (If Equipped)
SEAL KIT (REMAINING PARTS)
15. Dust Boot
16. Seal Washer
17. O-Ring (2.234 I.D.)
18. O-Ring (0.734 I.D.)
19. U-Cup (0.250 I.D.)
20. O-Ring (0.487 I.D.)
21. Inlet Poppet (0.550 O.D.)
22. Exhaust Poppet (0.609 O.D.)
23. U-Cup (1.600 O.D.)
24. Piston Ring
NOTE
To simplify overhaul, valve cartridge (7)
comes completely assembled.
Seals (19 thru 22) are also contained in
the assembled valve cartridge (7).
I=OUO 1019-2 9-12-79
395143
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