Spicer Single Drive Axles Service Manual: 34DS, 34RS, 38DS, 38RS, DS340, RS340, DS380, RS380, DS400, RS400, DS3 - Manual (Page 69)

Inter-Axle Differential Lockout Overhaul.
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Ser
vice Procedure
Procedure - Assemble and Install Lockout
1. With shift fork and sliding clutch installed in power divider cover, assemble and install lockout as follows.
2. Apply silicone gasket compound to mounting surface on power divider cover. See illustration.
3. Install lockout body. Secure with cap screws and lock washers. Torque cap screws to 48-56 ft. lbs. (65-76 N.m).
Note: Before installation, soak piston felt oilers in SAE 30 engine oil and lubricate “O’’ rings with a high-viscosity silicone oil
or barium grease “O’’ ring lubricant.
4. Install felt oilers and large “O” ring on piston.
5. Axles with Lube Pump. Before installing piston, place piston stop at base of lockout body.
6. Install compression spring over shift fork push rod. Install piston in body and secure with “O” ring, flat washer and nut.
Torque nut to 20-26 ft. lbs. (27-35 N.m).
7. Install “O’’ ring in lockout body cover. Install cover and secure with cap screws and lock washers. Torque cap screws to 96-
108 in. lbs. (10-12 N.m).
Lockout Silicone Gasket Pattern