Spicer Tandem Drive Axle Dual Range & Double Planetary 34,000-45,000 lbs - Manual (Page 66)

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Planetary Double Reduction Tandem Axles
• Dual Range Tandem Axles with “standard” Axle Range Selection
“Reverse-Air” Lockout.
The
System. “Reverse-Air” lockout is spring-
Two “Standard” designs are used on these axles and are identified as
operated to engage the lockout and
“Standard” “Current” or “Standard” “Non-Current” Models. Both designs
air-operated to disengage the
lockout. This model is similar to
are air-operated to engage the lockout and spring-released to disengage
the “non-current” “standard”
the lockout. Spicer Axles may be equipped with either of these lockouts.
The “Current” model is interchangeable with the “Non-Current” model
lockout. It is not available in the new
“current” lockout.
as an assembly. For service information, refer to the following page.
“Standard” “Current” Model Lockout Overhaul
Disassemble and Remove Lockout.
NOTE:
With axle installed in
vehicle, place differential lock
selector valve in the disengaged
(or unlocked) position. Disconnect
the air line at the lockout piston
housing.
“Standard” “Current” Model Lockout
1.
Remove cap screws and
2.
Remove locknut, Piston with
NOTE:
The shift fork and Push rod
lockwashers fastening mounting “O” ring, compression spring and cannot be removed with power
bracket to power divider cover. shoulder washer from push rod. divider cover installed (see Power
Remove bracket and piston Divider instructions).
housing.
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 lbs. -ft. (18-23 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 lockwashers and tighten to
48-56 Ib.-ft. (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 configura-
tion 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.
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