CAUTION: PTO units using transmission main pressure to engage the
PTO gear must have a positive main pressure shut-off at the solenoid
valve when the PTO is not engaged. Failure to provide this feature may
cause inadvertent clutch apply and PTO damage.
4. Couple the PTO output to its driven equipment. Inspect couplings or
universal joints for correct assembly and alignment. If the driven
component is not a direct mount arrangement, inspect the PTO drivelines
for angularity, phasing, and offsets.
6–7. CONNECTING PARKING BRAKE CONTROL
1. Connect and properly adjust the parking brake.
2. If present, adjust the brake shoe-to-drum clearance as specified by the
manufacturer.
This does not apply to 4000 Product Family.
6–8. CONNECTING COOLER
Refer to Figure 6–2 for typical cooler port locations on the transmission and
recommended torque for cooler line fittings.
6–9. CONNECTING ELECTRICAL COMPONENTS
NOTE: Allison Transmission electronic control systems are designed
and manufactured to comply with all FCC and other guidelines
regarding radio frequency interference/electromagnetic interference
(RFI/EMI) for transportation electronics. Manufacturers, assemblers, and
installers of radio-telephone or other two-way communication radios
have the sole responsibility to correctly install and integrate those
devices into Allison Transmission-equipped vehicles to customer
satisfaction. For further information, refer to TS2973EN, the WTEC III
Electronic Controls Troubleshooting Manual.
1. Remove the cover from the transmission feedthrough connector and
carefully connect the transmission external wiring harness. Keep dirt and
debris out of the connector.
2. Connect the external wiring harness.
a. For the 4000 Product Family connect: engine, turbine, and output speed
sensors, retarder control connector (if retarder is present), and the retarder
temperature sensor
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