CMI-C2L2Y-03

From:
Sent: Monday, March 21, 2016 5:48 PM
To:
@Navistar.com>
Cc:
@cummins.com>;
<
@cummins.com>;
@cummins.com>
Subject: Notification of use of HGL gears (reference 8D 34024)
Hi Tim,
This memo is to inform you that we will begin producing engines this week which will contain known
good crankshaft gears produced by HGL. There was a population of crankshafts already produced with
HGL gears when we put a hold on building engines with HGL gears. This population of crankshafts was
quarantined at that time. A team has been working on the development and implementation of the
process for screening to find defective gears already installed on crankshafts. The spec limit of this
process has resulted in a 7% fallout. This is much higher than the 1% fallout we actually experienced
that caused the noise condition, however we are being overly conservative due to the disruptive nature
of the issue. We are confident that engines produced with these screened crankshafts will not exhibit
the noisy “gear whine” condition (reference 8D 34024).
HGL is still not producing new gears. I will communicate to you if ever we do start using new gears
produced by HGL.
Thanks,
HD Customer Quality Assurance Manager
Cummins Inc.
Jamestown Engine Plant
(716) 456