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PERMCO 400-AS Installation Instructions

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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.
Permco 400-AS, Rev. A
Approved 1-14-05
Ken Thompson, kc
Installation Instructions
PERMCO #400-AS
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Summary of Contents for PERMCO 400-AS

  • Page 1 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. Permco 400-AS, Rev. A Approved 1-14-05 Ken Thompson, kc...
  • Page 2 3. Detent spring and ball will fall straight down and out of pump. 4. Re-insert the plug with o-ring. 5. It should be noted that you will also remove 1 through 6 when attaching the air shift. Air shift kit (400-AS) should include new o-ring (6). Permco 400-AS, Rev. A Approved 1-14-05...
  • Page 3 5. Bolt assembly to retainer plate with long cap screw (8). Part No. Description Small o-ring o-ring retainer ¼ x 20 cap screw Large o-ring Cylinder Body Set Screw Cover Plate 5/16 x 18 cap screw Permco 400-AS, Rev. A Approved 1-14-05 Ken Thompson, kc...

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