
Bulletin HY25-1380-M1/US
Owner’s Manual
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
12
Installation Instructions
Pressure Port and Aperture Opening Identification
1. These drawings represent left and right views of the MD and HD pressure ports on the transmission.
Allison World Transmission
P.T.O.s
An HD with 2 P.T.O.’s requires a 379556 “T” fitting and a 379703 swivel nut 90 degree elbow to attach 2 hoses to
the single port on the left side.
1 Lubrication Option “R”, shifter Options “G” and “H” for 277 and 859 Series
2 Lubrication Option “R” for 278 Series
Standard Hose Specifications by Transmission
TRANS.
LOCATION
267 Series
277 Series
278 Series
859 Series
MD
Top Right (Right Press. Port)
329130-6X
329075-2X
329075-2X
329075-2X
MD
L.H. Side (Left Press. Port)
329130-1X
329130-5X
329130-5X
329130-5X
MD
R.H. Side (Right Press. Port)
329130-4X
329075-1X
329075-1X
329075-1X
HD
Top Right (Left Press. Port)
329130-6X
329075-2X
329075-2X
329075-2X
HD
L.H. Side (Left Press. Port)
329130-1X
329130-4X
329075-4X
329130-4X
HD
1, 2
L.H. Side (Left Press. Port)
—
329130-5X
329130-5X
329130-5X
HD
1, 2
Top Right (Right Press. Port)
—
329130-4X
329075-4X
329130-4X
MD
1, 2
L.H. Side (Left Press. Port)
—
329130-5X
329130-5X
329130-5X
MD
1, 2
R.H. Side (Right Press. Port)
—
329075-1X
329075-1X
329075-1X
Allison10-Bolt Pad
97-Teeth
Main Pressure Port
.438-20UNF-2A
Left Side Only
13.61
[345.7]
68-Teeth
83-Teeth
Main Pressure Port
.438-20UNF-2A
175 to 255 P.S.I.
Both Sides
Main Pressure Port
.438-20UNF-2A
175 to 255 P.S.I.
Both Sides
10.15
[257.8]
24.33
[618.0]
Allison10-Bolt Pad
Main Pressure Port
.438-20UNF-2A
175 to 255 P.S.I.
Both Sides
10.15
[257.8]
24.33
[618.0]
Allison10-Bolt Pad
Main Pressure Port
.438-20UNF-2A
175 to 255 P.S.I.
Both Sides
Top/Left
Top/Left
Right/Left
MD
HD
MD