Disassembly Of First Stage, Photo #1, Photo #2

5.2DISASSEMBLY Of FIRST STAGE

To view all the parts used in the first stage, fold out the front cover of this manual. The circled numbers below refer to the corresponding numbers on the drawing.

1.Use 6" or 8" adjustable wrenches to disconnect all hoses from the first stage. Pull back the hose protector from the inlet end of the hose. Inspect the hoses for wear. Pay particular attention to the area where the metal ferrules meet the rubber hose material. Replace hoses if necessary.

2.Unscrew and remove the handwheel 1 .

3.Remove the dust cap 8 .

4.Install a Sherwood regulator support handle (p/n 4700-15) into one of the low-pressure ports. Use the support handle and a 15" adjustable wrench or bench vise to loosen the yoke nut from the body 15. See Photo # 1.

Photo #1

5.Remove the yoke 10 and yoke nut 9 from the body.

NOTE: If a Sherwood DIN adapter (p/n SAA530O) is installed in place of the normal yoke assembly, remove it

at this time. See Sherwood Scuba Technical Bulletin #104 for servicing procedures for the SAAS300 DIN adapter.

6.Use a 5/32" Allen wrench to remove all remaining port plugs 11 17 from the main body 17 .

7.	Use a 3/32" Allen wrench to remove the locking Allen screw 14 from the main body
	(see Photo #2).