Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
12
Bulletin HY25-1590-M1/US
Owner’s Manual
Caterpillar
Installation Instructions
Mounting the PTO on the CAT Transmission
When installing a PTO, always wear protective clothing and safety glasses.
WARNING: Oil may be hot. Use extreme caution to assure that you do not
accidentally come in contact with hot oil.
1. Drain transmission oil before removing the rear aperture plate. After draining
transmission fluid reinstall plug. (Fig. 1)
2. Remove the PTO rear aperture plate with an 18 mm socket. (Fig. 1)
3. Remove the O-Ring and clean the aperture surface. (Fig. 2)
NOTE: Do not reuse the O-Ring that comes with the transmission cover plate.
Fig. 2
Fig. 1
NOTE: CAT transmission needs to be equipped with the optional rear PTO drive
arrangement.
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