Quality since 1946
9049 Tyler Blvd. • Mentor, Ohio 44060
Phone (440) 974-8888 • Fax (440) 974-0165
Toll-Free Fax 800-841-8003 • 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
