Spicer Single Drive Axles Service Manual: 34DS, 34RS, 38DS, 38RS, DS340, RS340, DS380, RS380, DS400, RS400, DS3 - Manual (Page 87)

Inter-Axle Differential Lockout Overhaul.
64
Ser
vice Procedure
Procedure - Assemble and Install Lockout
1. With shift fork and sliding clutch installed, place the shoulder washer (white plastic) over push rod. The large diameter side
of the washer must face the power divider cover.
2. Install compression spring on push rod.
3. Lubricate “O” ring with silicone-based lubricant and install “O” ring on piston.
4. Place piston assembly on push rod. The large diameter end of piston must face power divider cover.
5. Install locknut on push rod and tighten to 13-17 lft. lbs. (l8-23 N.m).
6. Install piston housing, making sure the housing is correctly seated and piloted in the shoulder washer.
7. Place mounting bracket over housing and position on power divider cover. Install cap screws and lock washers and tighten
to 48-56 ft. lbs. (65-76 N.m).
Note: If axle is installed in vehicle, apply sealant to air line fitting and connect air line. When tightening air line, hold piston
housing in mounting position using a wrench applied to the hexagon configuration at outer end of housing.
Note: A new style “Inter-Axle Differential Lockout” was being released as this publication was being printed. If the Inter- Axle
Differential Lockout Assembly on your axle is not shown in this publication, call your local Spicer representative.
Shoulder washer
must seat properly