1. 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

2. 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

3. 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

4. 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

5. 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

6. Jacobs brake (current product rear hotside view)
Cummins Confidential

7. Cummins Intebrake (rear hotside view)
Cummins Confidential

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

9. 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

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

11. 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

12. 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

13. 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

14. 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

15. 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

16. 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

17. 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

18. 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

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

20. 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

21. 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

22. 3D models are provided to support this CEAF
– Contact Alan Bennett or Robert Ahrmann for further details
on 3D models
Cummins Confidential