Bulletin HY25-1135-M1/US
Owner’s Manual
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
10
General Installation
6 and 8-Bolt PTOs
Mounting the PTO (Continued)
Checking Backlash (Continued)
NOTE: Use a crossing pattern when torqueing the bolts
(Fig. 14).
NOTE: Apply a drop of Loctite 290 on each capscrew before
reinstalling. Capscrews that are furnished with a conversion
kit and are being installed for the first time do not require the
drop of Loctite.
NOTE: When using a 221 Series PTO with the AJ gear
designation on an Allison Automatic transmission with a six
bolt opening, a special gasket is supplied. When installed
with the PTO this gasket reduces the need for backlash
adjustment.
863 Series
An inspection hole is provided in the PTO housing for feeling
the mounted backlash.
Rock the PTO Input Gear with your hand and correlate this
backlash to the unmounted backlash found in step 3 on
page 9. Use Gaskets to get backlash feel as close to
unmounted condition as possible. (Fig. 15).
Fig. 15
Fig. 14
4
2
1
3
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