71
Inertia Brake
6. Apply contact lubrication to jumper harness per instructions in the “How to Apply Contact Lubrication to Eaton 
Transmission Harnesses” section then connect the jumper 
harness to the transmission harness. 
Reroute and reconnect the Transmission Harness to the Inertia Brake. Dress the harness 
along the transmission case 
from the inertia brake up to the top of the transmission. Install the harness push-in anchor to the threaded-hole anchor 
point in the inertia brake housing. Install tie wraps every 6-10 inches. The harness should not have sharp bends or be 
under tension. See illustrations in the “How to Apply Contact Lubrication to Eaton Transmission Harnesses” section. 
7. Add UltraShift PTO Instruction Label to dash near PTO switch 
or a location in view of the driver.
8. Install the PTO to the 8-bolt PTO opening fol
lowing the manufacturers instructions. 
Note: Fill th
e transmission with lubricant.
Final Check
• Make sure the mounting bolts are properly tightened.
• Make sure the lubricant supply line is properly tightened. 
• Make sure the transmission is properly filled with lubricant.
• Make sure the Transmission Harness is connected and locked.
• Check for lubricant leaks after operating the vehicle.
• Check 
that the inertia brake has sufficient clearance to prevent contacting tanks, brackets, frame rails, exhaust, or any 
other part of the vehicle. Contacting anything when stationary or moving will cause damage to inertia brake, angle 
adapter, or other vehicle equipment.
• Instruct Driver on PTO operation with Fuller
® 
UltraShift Transmissions.
 
 
 
 
Inertia Brake mounting to 6-bolt 
opening as viewed from rear of 
transmission 
Note orientation of connector end of  Inertia 
Brake when directly mounted to 6-bolt 
o
Drawing shows Inertia Brake directly mounted to 
the 6-bolt opening 
Push-in harness anchor 
point threaded hole.