Parker 221 Series, Owner'S Manual, Page: 42 / 56

Bulletin HY25-1135-M1/US
Owner’s Manual
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
38
Allison Installation 6 and 8-Bolt PTOs
PTO Openings (Continued)
MT-30-42 (57 Teeth)
6 Speed
3341 - 3441 (55 Teeth)
AT-540
11.9"
[302.26mm]
4.7
Lube Tap
3/4" O-Ring 50-70 PSI
3.5-4.9 Kg/cm
2
T Fitting
378840
Main Pressure
1/8" N.P.T. 90-150 PSI
6.3-10.5 Kg/cm
2
NOTE:
Use cooler return port for PTO lubrication. The T fitting is to be installed in the port that is
coming from the cooler back to the transmission.
1. Converter driven PTO Drive Gear.
4 Speed (64 Teeth)
MT-640
13.5"
[342.9mm]
5.6"
[142.24mm]
T Fitting 378880
Lube Tap
Before Nov. 1974
Use T Fitting 378880
7/8" O-Ring 25-30 PSI
1.75-2.1 Kg/cm
2
6.4"
[162.16mm]
13"
[330.2mm]
5.1"
11.9"
[302.26mm]
Lube Tap
3/8" NPT12-20 PSI
.92-1.4 Kg/cm
2
Main Pressure
1/8" NPT 90-200 PSI
6.3-14 Kg/cm
2
Main Pressure
1/8" NPT 125-217 PSI
8.7-15.2 Kg/cm
2
After Nov. 1974
Use T Fitting 378970
1-1/16" O-Ring 25-30 PSI
1.75-2.1 Kg/cm
2