QSK19 Oil Pan Fillet Change Kathryn McCarthy 5/20/2016 Cummins Confidential

Reason for change The changes being made to the oil pan are a result of oil pan cracking issues. A previous change to the tooling process significantly increased the stress at a certain region of the oil pan, which was causing failures. Cummins Confidentiall

Description of Change The change to the oil pan includes restoring the corner fillet radii to what it was prior to the 2013 casting tooling revision and increasing a fillet radii on the outside of the pan rail from ½” to 1” to further reduce stress at the failure region. Insert Data Classification

Part Numbers Affected Existing Part Number New Part Number Option Number 3024391R 4371958   30244391 5412754 OP4037 OP 4102 3096460 5412755 OP 4084 OP 4090 OP 4111 Cummins Confidential

3024391R – Current Product Part Cummins Confidential

3024391R – Proposed Design Change Cummins Confidential

Dimensional Changes to Casting Depth, width, draft angle, and height of the oil pan will not change Boss locations and machined holes are not changing Only change is at the location where the rear vertical edge merges into the outside of the pan rail Outlined areas will be modified Cummins Confidential

Change #1 – Sidewall Fillet Radii Increase Fillet radius at the top of the oil pan side walls will be increased from 0.5” to 1” Width of flat section on the outside of the pan rail changed from 1.44” to 0.935” Cummins Confidential

Change #1 – Sidewall Fillet Radii Increase ½” wall fillet radius 1” wall fillet radius Cummins Confidential

Change #1 – Sidewall Fillet Radii Increase Change will not impact the mounting bolt through holes Spot faces will be added if necessary Cummins Confidential

Change #2 – Larger Corner Fillet Corner fillet will extend out further Cummins Confidential

Change #2 – Larger Corner Fillet Length of flat section at the corner fillet reduced from 2.35” to 1.70” Cummins Confidential

Change #3 Rear Vertical Edge Fillet Current Production Part New Proposed Design Insert Data Classification

Change #3 Rear Vertical Edge Fillet Current Production Part New Proposed Design Insert Data Classification

Feedback Requested Please respond to the CEAF response link by Friday, June 3rd. For questions, please contact Kathryn McCarthy. Insert Data Classification