Kirby Morgan 37 User Manual

Page 23

Kirby Morgan 37 & 57

14) Rotate the adjustment knob in i.e., clockwise,

several turns, then recheck the torque one more time.

Ensure the adjustment shaft rotates smoothly and

there is no binding.

15) Stretch the Quad-Valve main exhaust body onto

the exhaust flange of the regulator. Rotate as needed

so the port and starboard whiskers can be installed.

16) For the old double exhaust or single exhaust,

stretch the exhaust whisker onto the exhaust flange

of the regulator. Fasten the double exhaust to the

regulator with a cable tie and tighten.

17) Mount the regulator to the helmet. Lightly lubri-

cate and install the sealing O-ring and thread on the

regulator mount nut.

18) Install the bent tube assembly before tightening

the regulator mount nut, finger tight

NOTE: If this maintenance is during an annual

overhaul, replace the Teflon ring at the side block

end of the bent tube and the O-ring at the demand

regulator inlet side of the bent tube.

Lightly lubricate the O-ring on the bent tube assem-

bly. Slide the O-ring end of the bent tube assembly

into the regulator inlet nipple until the side block end

is aligned with the threads for the bent tube mount nut.

Rotating clockwise, thread the large nut on the bent

tube assembly onto the inlet nipple 1 to 2 threads.

Ensure that the Teflon® ring is in place and engage

the bent tube nut to the side block fully until it is hand

tight. You may need to gently rock the regulator body

and/or the bent tube to fully engage side block nut.

Next, fully engage (clockwise) the large nut on the

bent tube into the regulator inlet until hand tight. This

will ensure the nut is bottomed on the shoulder on

the bent tube. Do not tighten further.

Loosen the jam nut on the regulator inlet (counter-

clockwise), and engage the jam nut fully to the large

nut on the bent tube. Using a torque wrench and an

7/8” open end wrench hold the large nut on the regu-

lator end of the bent tube and tighten the jam nut to

40 inch pounds.

The Quad Valve must be properly connected to the

regulator and the quad exhaust cover.

19) Ensuring the O-ring is in place, use a torque

wrench with a 1 3/8” socket and an extension to

tighten the regulator mount nut to 75 inch pounds.

Next using a torque wrench with an 11/16” adapter,

torque the bent tube nut to the side block to 100 inch

pounds.

20) Attach the whisker to each side of the face port

retainer using the screws, plates and spacers. Using a

torque wrench with a flat blade screwdriver adapter,

carefully torque these screws to 12 inch pounds.

21) Connect the Quad exhaust cover to the exhaust

body and install the screws on the Quad exhaust

22) Adjust the regulator following instructions in this

chapter.

23) Install the diaphragm, cover, clamp and screw.

Tighten the screw to 12 inch pounds using a torque

screwdriver.

24) Check the regulator for proper operation and fine-

tune the adjustment if necessary.