EXHAUST TO TRANSMISSION THROUGH PTO
TRANSMISSION MAIN PRESSURE
MANUAL HYDRAULIC VALVE OR SOLENOID VALVE
“FROM COOLER” PORT PTO LUBE LINE (with 0.81 mm (0.032 in.) orifice) V05817
Figure 3–3. PTO Clutch Pressure Plumbing Schematic
3–4.
INSTALLING FILL TUBE AND SEAL
a. Location. The fill tube may be mounted on either the right or left side. The unused fill tube provision must have a plug in the fill tube opening. CAUTION: Install a fill tube bracket using the correct length M8 self-tapping screw which is 24.0 mm (0.95 inch). A screw that is too long may cause cracks and leaks in the main housing. Refer to AS64-065 in the Allison Sales Tech Data book for the correct screw specifications. b. Installation. If the fill tube will interfere with the installation of the transmission, delay this step until after the transmission is in the vehicle. Install the fill tube seal into the main housing. Insert the fill tube through the seal until the shoulder at the bottom of the fill tube contacts the seal. Align the tube bracket with its bolt location. Install the fill tube bolt and tighten until it is firmly seated against the bracket. 24
