Bulletin HY25-1135-M1/US
Installation Sketches
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
30
Owner’s Manual
6 and 8-Bolt PTOs
GENERAL
WARNING: Connect directly to air supply. Do not use tubing between air supply and pressure protection valve.
CAUTION: When installing nylon tubing avoid sharp angles, exhaust and manifold systems.
ImPORTANT: When this installation is used on vehicles with automatic transmissions the, PTO drive gear must be stopped before shifting.
NOTE: Air control value must be fitted inside a waterproof housing when instlled outside the driver’s cab.
Air Shift Installation Kits: 328388-65X
328388-72X
328388-79X
(SK-297 Rev J)
378416 Hex. Nipple
Air Supply
379042 Male Connector
379042 Male Connector
379042 Male Connector
To Dump Pump
Shifter Lower Port
To Dump Pump
Shifter Raise Port
379044-6 1/4" Nylon Tubing
379044-6 Nylon Tubing
379904 Push Connector
Connect to Indicator
Switch on Air Shift
Cover Ass’y
379640
Booted Pin
Connector
Battery or
Ignition
379000 Fuse
Holder Ass’y
w/10 AMP
Fuse
Black
Wire
379252 Butt
Connector
379664 Red L.E.D. 12 V
Indicator Light Assembly
Red Wire
Cab
PTO
IN
TIP
EX
LOW
OFF
Exhaust Port May
Be Plumbed to
Exhaust Outside
of Cab
NOTE: Connect Plastic Tubing to the
Push Connect (Air Shift Cover Ass’y)
378414 Pressure Protection Valve
Opens at 70 PSI
Shift Option S, T or U
Elec/Air Shift
221/290/442/447/489/
660/680 Series
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