Spicer Diff Lock Selector Switch Standardization User Manual

Spicer® Components Bulletin
ABIB-9609

Diff Lock Selector Switch Standardization

Effective July 1, 1996, Spicer has standardized the Diff Lock Selector Switch and Wiring Harnesses used on the
axles listed below, with those used on the DD/RD461 product line. The current selector switch (210280) has
12mm threads and the 461 axle series selector switch (129035) has 14mm threads. The wiring harness (pigtail)
connectors at the switch end are not interchangeable between the current (210280) switch and the new
(129035) switch. The old wiring harness must be replaced with a new harness that is compatible to the 129035
switch as part of the switch upgrade. Service parts requirements involving the two groups of axles will vary due
to design features and switch locations.

GROUP A GROUP B

19060D
21060D
22060D
DD/RD404
DD/RD454
DD/RD405

19055D 21080D 26105D
21065D 22080D 30105D
22065D 23080D
23070D 26080D
23085D 30080D
26085D 21080D

GROUP A AXLES

The selector switch is located on a new piston cover that now has a 14mm threaded hole to accommodate the
129035 switch. The original piston covers will be replaced by PISTON COVER UPGRADE KITS and the 129035
selector switch is now included with any Carrier Exchange Unit built after July 1, 1996 (date code H96183).
When ordering a piston cover upgrade kit, it is important to select a kit with proper wiring harness.

GROUP B AXLES

The selector switch hole is machined into the carrier and cap assembly. When converting these axles over to the
14mm selector switch, a SELECTOR SWITCH UPGRADE KIT is available that includes a 129035 switch,
compatible wiring harness and adapter components. The adapter components as shown on page 3 of this
bulletin will enable the 14mm switch to be used in the carrier/cap housings that have the 12mm threaded hole.
As stated above, due to selector switch design, the wiring harness will also need replacing. The 129035 selector
switch is now included with any Carrier Exchange Unit or Carrier/Cap service kits produced after July 1, 1996
(date code H96183).

NOTE: Because the wiring harnesses are NOT interchangeable, Spicer suggests stocking all three (3) of
the new wiring harnesses to minimize customer down-time. A wiring harness listing by OEM usage is
provided as a guideline.

When stock of the existing 12mm switches and compatible wiring harnesses for these axles are depleted and no
longer available, the axles will need to be upgraded as described above.

09/96

This bulletin contains product improvement information.

Dana Corporation is not commited or liable for canvassing existing product.

GROUP A AXLES: 19060D DD/RD404
21060D DD/RD454
22060D DD/RD405

ITEM

NO.

PARTS USED
BEFORE
7/1/96

1 210280 Note 1 129035 SELECTOR SWITCH Note 2 — —

2 126618 129034 NYLON WASHER-Black ——

3 128146 Note 1 129044 WIRING HARNESS METRI-PACK 150 SERIES 508396

4 128445 Note 1 129046 WIRING HARNESS METRI-PACK 280 SERIES 508291

5 128481 Note 1 129047 WIRING HARNESS WEATHER PACK 508289

6 128641 129425 PISTON COVER INCH THREAD AIRLINE HOLE See Below

6 128612* 129424* PISTON COVER METRIC THREAD AIRLINE HOLE 508290

PARTS
USED ATER
7/1/96

PART

DESCRIPTION

NOTES

NOTE 1: When service inventory is depleted, you must order upgrade kits.
NOTE 2: Exchange carrier units built after 7/1/96 will include a new selector switch

PISTON COVER UPGRADE KITS

DESCRIPTION

SELECTION SWITCH - 14mm 129035 129035 129035 129035

NYLON WASHER 129034 129034 129034 129034

PISTON COVER* 129425 129424* 129425 129425

WIRING HARNESS 129047 129047 129046 129044

COVER GASKET 128643 128643 128643 128643

508289 508290* 508291 508396

KIT CONTENTS

* Cover 129424 and 128612 have metric threaded airline hole. Used in GMC applications

ORDER

UP-

GRADE

KIT