PERMCO 400-AS Installation Instructions Download Page 1

Permco 400-AS, Rev. A 
Approved 1-14-05 
Ken Thompson, kc 

Installation Instructions 

PERMCO #400-AS 

 

Prepare Valve for Installation: 

1.

 

Refer to figure 1 on page 2 for proper valve preparation instructions. 

2.

 

Make sure that valve spool and valve face are free of any foreign particles. 

 

Prepare Cylinder for Installation 

1.

 

Remove the two 5/16-18 cap screws from rear of cylinder. This will disassemble 
cylinder into 3 pieces: 

a.)

 

Mounting Bracket with Socket head Cap screw 

b.)

 

Cylinder Body Assembly with O-Ring 

c.)

 

Rear Cover Plate with O-Ring 

 

Installation of Cylinder:  (Refer to Figure 2 on page 3) 

1.

 

Slide bracket over shaft with recess of bracket facing pump. Make sure O-Ring 
seat is in recess of bracket. Attach to pump with (2) socket head cap screws using 
a 3/16” hex wrench. 

2.

 

Rotate pump shaft to align hole in shaft with the setscrew located inside the 
middle air port of the cylinder body. Slide cylinder body assembly over shaft. 

3.

 

Secure to pump by screwing setscrew through pump shaft using 5/32” hex 
wrench, tighten firmly. 

4.

 

Place rear cover plate with o-ring onto end of cylinder body and install cap 
screws, torque to 10 ft/lbs. 

5.

 

Test alignment of cylinder by removing pipe plug from rear cover, inserting a 
3/16” hex wrench through cover and rotating shaft clockwise. Shaft should rotate 
freely. Replace pipe plug using a thread sealant. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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