
Shown below in Chart-1 is the past history on D404 shift fork components for straight air lockout configurations. The
reverse air lockout parts for the D404 family axles are unique in their design as shown in Chart-2. In August and
September 1996, Navistar stopped using the “Reverse Air Lockout” option on D404 family axles used in their production
vehicles. Chart-3 will show which parts you should order based on the power divider & shift fork combination you currently
have for all straight air configurations.
CHART-1
CHART-2
CHART-3
For spec’ing or service assistance, call 1-800- 24 hours a day, 7 days a week
Or visit our web site at: http://www.VSLFHUSDUWV.com
Dana Corporation
Copyright Dana Corporation, 2000 Commercial Vehicle Axle Division
May 2001 All Rights Reserved. P.O. Box
Printed in U.S.A. www.dana.com 7ROHGR2KLR
D404 Shift Fork & Push Rod Component History
PDU Cover 127605 PDU Cover 129572 129572
Shift Fork 127506* Shift Fork 129783 129856 (order kit 510870)
Pushrod 127477 Pushrod 129583 not used
Spring 127474 Spring 129584 129859
* 127506 now replaced by 129783
PDU Cover
Shift Fork Assembly
Pushrod
Spring
Straight Air Lockout Reference Chart
Before 11/2/98 11/2/98 to 2/21/00 After 2/21/00 - Current Production
Available Kit
PDU Cover Shift Fork Shift Fork Pushrod Spring Part-No.
127605 - before 11-2-98 127506* 129783 127477 127474 none
127605 - before 11-2-98 129783 129783 127477 127474 none
129572 - after 11-2-98 129783 129856** N/A 129859 510870
129572 - after 11-2-98 129856 129856** N/A 129859 510870
* 127506 now replaced by 129783
** 129856 only sold as part of kit 510870 which also includes new spring 129859.
If you originally have: For Service Use These Combination of Parts:
PDU Cover 127605 For Service Use
Shift Fork 127506* 129783
Pushrod 128730 128730
Spring 128731 128731
* 127506 now replaced by 129783
Navistar Reverse Air Lockout
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