Information To support CEAF: Cummins Intebrake for L9 used on D563004CX03 Affected Options: BR Option; EB Option; PH Option; RL Option; VC Option; WR Options

Project Scope Background: Introduction of Cummins Intebrake for the L9 engine platform – (This CEAF is for the engine brake version of the L9 only. The non- brake version is not being effected by this CEAF.) Implementation Date: May 2018

Introduction/ Background What is changing? Compression relief brake for L9 Rocker lever housing height (valve cover mounting surface) Rocker lever housing pass through connectors Valve cover height (uses short valve cover) Space claim for overall engine height (reduction of engine height) Main engine wiring harness connections to rocker lever housing pass through connectors (reduction in wiring harness connections) OEM interface point with main engine wiring harness remains the same Why are we making this change? Product improvement Weight reduction Overall engine package height reduction Cummins Confidential

Valve Cover Height (Jacobs-brake vs. Cummins Intebrake) RL Option (Jacobs-brake) VC Option (Jacobs-brake) 188 mm 140 mm RL Option (Intebrake) VC Option (Intebrake) Tall valve cover would no longer be needed with Cummins InteBrake Reduction in overall height of engine package envelope Uses same short valve cover as non-brake engines Cummins Confidential

Valve Cover Height (non-brake vs. Intebrake) RL Option (non-brake) VC Option (non-brake) 135 mm 140 mm RL Option (Intebrake) VC Option (Intebrake) Shorter valve cover will be used with Cummins Intebrake – 5mm height increase above non-brake rocker lever housing to incorporate the Cummins Intebrake design Cummins Confidential

Jacobs brake (current product rear hotside view) Cummins Confidential

Cummins Intebrake (rear hotside view) Cummins Confidential

Jacobs brake (current product rear view) 202 mm 175 mm 193 mm 70 mm Cummins Confidential

Cummins Intebrake (rear view) What is changing? Valve cover/breather height reduction (approx. 48 mm) Rocker lever housing height increases by 5mm where valve cover mounts Overall package envelope reduced Cummins Confidential

Jacobs brake (current product cold side view) Injector 4 pin connector (3 connectors) Engine brake jumper harness Cummins Confidential

Cummins Intebrake (rocker housing pass throughs) Injector/engine brake 8 pin connector Injector/engine brake 8 pin connector What is changing? Injector pass through connectors in rocker housing reducing from qty (3) four pin connectors to qty (2) eight pin connectors Engine brake jumper harness being eliminated 8 pin connector contains engine brake solenoid pins Cummins Confidential

WR Options (One example) Areas of change in main engine harness with Cummins Intebrake Only changes to the main engine harness are to areas connecting to the pass through harnesses in the rocker lever housing All other main engine harness connections and routing are the same as existing current product

Jacobs brake (current product cold side view) 202 mm 193 mm 175 mm Tall valve cover and breather options (3) Injector harness pass through connectors (2) Jacobs brake pass through connectors Cummins Confidential

Cummins Intebrake (cold side view) What is changing? Valve cover/oil fill cap height reduction (approx. 54 mm) Breather height reduction (uses same lower mounted option as non-brake engine) Injector pass through connectors in rocker housing reducing to qty (2) eight pin connectors Cummins Confidential

RL9840/RL9843 Same machined rocker lever housing is used in each option Only difference between these two options is the engine brake solenoid 12 volt / 24 volt

Current Product Housing and Cummins Intebrake Housing Overlaid Qty (3) Hotside boss sizes and height are same as current product – Only difference for Cummins Intebrake housing is these (3) bosses are 5mm lower than the housing top machined surface where valve cover mounts and the holes are drilled through and threaded through rather than being blind holes that are in the current product housing

Current Product Housing and Cummins Intebrake Housing Overlaid Boss height on rear of housing has been moved up 5mm to remain flush with the top machined surface where valve cover mounts – M6 threaded hole has been moved 2mm outward and made a through hole rather than a blind hole

Option comparisons Option Name Jacobs Engine Brake Cummins Intebrake Existing Option New Option Breather Option BR9216 BR9215 Valve Cover (Front Fill) Option VC 9784 VC 9773 Valve Cover (No Fill) Option VC 9776 VC9777 Valve Cover (Rear Fill) Option VC 9774 VC9775 Wiring Harness Option WR 9230 WR90759 WR 9355 WR90760 WR 9518 WR90761 WR 9546 WR90762 WR90470 WR90763 Rocker Lever Option (12V EB Option) RL 9759 RL9834 Rocker Lever Option (24V EB Option) RL9835 Engine Brake Option EB9038/9039 EB9089

Engine Configurations that the Cummins Intebrake will be implemented onto Cummins Intebrake Configs D563004CX03 D563012CX03 D563019CX03 D563020BX03 D563025BX03 D563026CX03 D0Q3001BX03

the height change affect or prevent any additional OEM components from Feedback Requested Any fitment issues or brackets that mount in this area? – With rocker lever housing height increase and short valve cover used, does the height change affect or prevent any additional OEM components from being attached? Cummins Confidential

Feedback Requested Any fitment issues or brackets that mount in this area? With rocker lever housing height increase and short valve cover used with breather attached, does the height change affect or prevent any additional OEM components from being attached? Could same brackets used for non-brake engines also be used for the Cummins Intebrake engines? Cummins Confidential

3D models are provided to support this CEAF – Contact Alan Bennett or Robert Ahrmann for further details on 3D models Cummins Confidential