Kirby Morgan 37 - Manual (Page 8)

75
Kirby Morgan 37 & 57
© Copyright 1970-2008 Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 080508001
Remove the valve stem.
Remove the lock nut, spring and knob.
Undo the packing nut.
7.5 Emergency Valve Assembly
The Emergency valve control knob is not interchange-
able with the defogger valve control knob.
7.5.2 Cleaning and Lubricating
1) Clean all the metal parts in a soap and water solu-
tion, followed by cleaning with a 50/50 dilute solution
of white vinegar/water. Rinse with fresh water. Clean
all parts. See the cleaning instructions in Chapter 6.
2) Inspect the packing and washer for wear and re-
place if necessary. Normally the packing will last a
very long time and does not require replacement as
long as the valve operates smoothly and does not leak.
To replace the packing place the packing nut in a vise
and carefully work the packing out with a small screw
driver, taking care not to damage the threads of the
packing nut. Replace the washer if needed.
3) Inspect the stem seat for unevenness or wear and
replace if necessary. It must also be replaced if the
stem is bent. Damage will include damaged threads,
rounded flats that engage the control knob. Also
inspect the shaft to ensure the conical seat surface is
smooth and free of corrosion or damage.
Inspect the packing and washer.
4) Check the seat in the emergency valve body for
wear or unevenness, galling and corrosion. Check
the seat on the emergency valve stem. To clean up the
seat surface use a pencil eraser to buff the surface.
Inspect all threaded surfaces for damage. Replace the
emergency valve body if any damage is found.
7.5.1 Disassembly of the Emergency Valve
Tools Required:
11/16 inch Open End Wrench
1 inch Open-end Wrench
Torque Wrench Attachments & Torque Wrench
3/8 inch Slotted Flat Blade Screwdriver
Soft Jaw Vice
Lubricant
Teflon Tape
1) Remove the lock nut, spring, and knob.
2) Undo the packing nut, and remove the packing,
and washer.
3) When the packing nut is free of the threads of the
emergency valve body, back out the stem until it is
free of the emergency valve body.
The control knob for the emergency
valve and the defogger knob are not in-
terchangeable. Use only the correct knob
for the appropriate valve.
WARNING