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Inertia Brake
Inertia Brake
Installation
1. Clean and thoroughly dry all mating surfaces (including the gasket) prior to assembly.
Note: The transmission inertia brake 
may be mounted to the 6-bolt PTO opening directly, or mounted utilizing a 6-bolt PTO Angle 
Adapter to assist in aiding chassis clearance. 
2. If a 6-b
olt PTO Angle Adapter is required, install the angle adapter to the 6-bolt PTO opening following the 
manufacturers instructions. See picture of 6-bolt 
installation with angle adapter in the “Final Check” section.
3. If the Inertia brake is installed directly 
mounted to the 6-bolt opening, proper orientation must be followed as shown in 
the illustration in the “Final Check” section. A directly mounted Inertia Brake also requires a new lubrication hose, Eaton 
part number 5588209.
4. Using the six (6) 
3/8 mounting bolts, install the Inertia Brake and gasket, being careful to align the Inertia Brake gear 
with the drive gear. Tighten mounting bolts to 40-45 lb-ft. (54-61 Nm) using a cross pattern. 
Note: When
 mounted directly - orient the inertia brake housing with hose connection forward / electrical connection rearward as 
shown in the “Final Check” section (same orientation as 8-bolt). When mounted to a 6-bolt PTO Angle Adapter - orient the 
inertia brake housing with hose connection rearward / electrical connection forward as shown in the illustration in the 
“Final Check” section. Ensure gasket, inertia brake and mating mounting faces are assembled dry (no lubricant or grease). 
 The Inertia Brake is heavy. Be prepared to handle the weight of the Inertia Brake until the mounting bolts are installed.
5. Reconnect 
the lubricant supply line to the Inertia Brake and tighten to 20-22 lb-ft (27-30 Nm). For Inertia Brakes directly 
mounted to the 6-bolt opening: Orient the 45 degree elbow facing inboard, and connect the 45 degree elbow 
fitting end of the 5588209 hose to the Inertia Brake elbow. Connect the straight 
fitting end of the hose to the case port 
90 degree elbow. For Inertia Brakes mounted to a 6-bolt PTO angle Adapter: Connect the 90 degree elbow fitting end of 
the 5588210 hose to the case port 90 degree elbow. Connect the straight fitting end of the hose to the Inertia Brake 45 
degree elbow.