Parker 221 Series, Owner'S Manual, Page: 27 / 56

Bulletin HY25-1135-M1/US
Installation Sketches
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
23
Owner’s Manual
6 and 8-Bolt PTOs
GENERAL
Shift Option A
Air Shift
221/442/447/489/660/680 Series
378414
Pressure
Protection V
alv
e
Opens at 60-70 PSI
378416
He
x Nipple
Air
Supply
NO
TE:
Direction
of Arro
ws
379640
Booted Connector
Indicator Switch
on Air Shift Co
ver Assy
379042
Male Connector
379044-6
Nylon T
ubing
75-P-13
Indicator Light
Blac
k
Wire
Red Wire
379252 Butt Connector
379900 Fuse Holder Assy w/10 Amp Fuse
Batter
y or
Ignition
329648X
Valv
e Assemb
ly
500448-9
Slotted Scre
w
4 Places
500357-7
Loc
kw
asher
4 Places
500376-6 He
x Nut
4 Places
379130 Valv
e Br
ac
ket
2 Places
Installation Kit:
328388-98X
See SK-204 Dr
illing
Template f
or Control Plate
NO
TE:
When this installation is used on v
ehicles with
automatic tr
ansmissions the PT
O dr
iv
e m
ust be stopped
bef
ore shifting.
C
A
UTION
:
When installing n
ylon tubing a
void shar
p angles
, e
xhaust and manif
old systems
.
W
ARNING:
Connect directly to air supply.
Do not use tubing between air supply and pressure protection valve.
(SK-462)