Shift unit retrofit kits, Retrofitting instructions, Electric shift system retrofit kits – Spicer Drive Axles Service Manual Axle Shift Systems, 2-Speed Single Rear Axles User Manual

Page 19

Electric Shift System

Retrofit Kits

Shift Unit Retrofit Kits

The new Spicer Electric Shift Unit is a completely new design

and shares no common parts with existing shift units. How-

ever, it is completely interchangeable as a unit for service

replacement. Retrofit Kits are available to convert to the new

shift unit.

Note: In some special situations, the new unit cannot be used.

Refer to appropriate Spicer Parts Books for detailed

application and part no. information.

The following instructions are a condensed version for retro-

fitting a new shift unit. Detailed instructions are contained in
the Retrofit Kit.

Retrofitting Instructions

*These parts are included in Retrofit Kit.

1. Remove existing shift unit.
2. Remove and discard seal and spring.
3. Cut existing wiring harness (approx. 6" - 8"). Identify

wires (Low Range, High Range and ground).

4. Connect new wiring harness to existing harness,

using connectors* furnished in kit.

5. Connect new wiring harness to new shift unit.*

Check shift unit operation before mounting on differ-

ential carrier. Operate driver control switch in low

and high range and observe new shift unit operation.
If shift unit does not operate, unplug new harness

connector and test for power and voltage continuity

at connector terminals.
If shift unit operates, install on carrier as follows:

6. Use new seal and spring assembly.* Mount seal on

carrier studs.

7. Install shift unit. Install flat washers and nuts.

Torque nuts.

Note: Make sure to use the mounting washers* (0.100",

2.54 mm thick) furnished with kit.

8. Attach cable clip* to harness near motor and fasten

to motor stud with nut*. Torque clip nut.

9. Secure harness to chassis with tie wraps.* Leave

adequate slack to allow for axle movement.

IMPORTANT: Shift Unit Replacement.
Before installing a rebuilt or new shift unit, check fit of shift
fork to slide block pivot using a “Fit-up” Card or Template
(PN 128039). These cards are furnished with new shift units
retrofit and slide block kits. Instructions are contained on
the card (see illustration) (also see page 6 instructions).

EXISTING WIRING HARNESS

NEW HARNESS*

Ground

to Green Wire (Ground)

)

(

)

(

Connectors (3)

Tie Wraps (2)

Shift

Unit

Assembly

Flat Washer (2)

(0.100", 2.54mm thick)

Cable

Clip

Nut

Wiring

Harness

Spring

Seal

COMPONENTS OF TYPICAL RETROFIT KIT

IMPORTANT

Procedure:

1. Shift axle to high range so fork is

square to axle face.

2. Remove shift unit and rubber boot.

3. Drop card over shift unit as shown

in (fig. 1) until card touches carrier

surface or interferes with fork.

4. If no interference, fork is OK.

Go to step #6.

5. If card interferes at A or B, care-

fully grind fork to fit template.

6. Replace boot and reassemble unit.

Dana service keeps

you on the road.

For technical assistance call

1-877-777-5360

anywhere in North America

Part no. 128039

10M/1290/MP

2-Speed Shift Fork Fit-Up Card

Printed in U.S.A.