Buyers Products Company AS301 User manual

Quality since 1946
9049 Tyler Blvd. • Mentor, Ohio 44060
Phone [phone] • Fax [phone]
Toll-Free Fax [phone] • buyersproducts.com
Installation Instructions
AS301 Air Shift Cylinder
The AS301 Air Shift Cylinder mounts to Buyers BPC1010-Series, Permco 640-Series,
or Commercial C101-Series Dump Pump/Valve in place of the detent assembly.
4. Remove four cap screws and
slide end cap off spool. Do not
remove O-ring from valve hous-
ing. Clean mounting face
of valve housing and spool.
Disassembly
1. Using snap ring pliers,
remove snap ring from valve
spool.
2. Remove retaining ring from
valve spool.
3. Remove detent cap, spring
and ball from valve’s end cap.
Assembly
5. Place large O-ring and spring
retainer over valve spool with
smaller diameter hole in retainer
toward valve casting. Be sure
O-ring in valve housing is prop-
erly seated.
6. Apply light coating of grease
to small O-ring and carefully
place it into large detent groove
in valve spool.
If end cap has a wiper seal, clean spool. Wrap a layer of thin, clear
tape over groove to prevent seal from catching in it when you
remove cap. Remove tape before installing Air Shift Kit. —Installation Instructions continued on back

Quality since 1946
9049 Tyler Blvd. • Mentor, Ohio 44060
Phone [phone] • Fax [phone]
Toll-Free Fax [phone] • buyersproducts.com
Assembly, cont. from front
7. Hold opposite end of spool
and push on piston assembly
until piston hole lines up with
hole in valve spool. Slide clevis
pin into hole.
8. Apply a light coating of
grease to quad seal ring. Slip
snap ring onto clevis pin to
secure it.
9. Slide pressure cap over as-
sembly and push tight against
valve body. Tighten cap screws
finger tight. Shift spool back and
forth to assure centering of
air shift.
10. Alternating cross corners,
torque cap screws to 24 ft. lbs.
11. Install air lines from valve in
cab to air cylinder.
Air in port A shifts spool to
raise position.
Air in port B shifts spool to
lower position.
Minimum air supply 80 psi.
An air dryer or water filter
is recommended in air sup-
ply for cold weather opera-
tion.
Be sure O-ring is
in proper position
in groove in valve
housing before start-
ing assembly.
AS301 Lit. 2