Spicer Drive Axles Service Manual Axle Shift Systems, 2-Speed Single Rear Axles - Manual (Page 25)

22
Air Shift System
Removal / Disassembly
Shift Unit Removal/Disassembly
Remove Shift Unit
1. Disconnect air line at shift unit cover. Remove nuts,
flat washers and piston air shift unit from differential
carrier.
Note: When shift unit is removed, provide container to catch
oil that escapes from reservoir.
2. Remove shift fork seal and spring.
Disassemble Shift Unit
1. Remove cap screws, lock washers, cover and gasket
from housing. Drain lubricant.
2. Remove bolts, locknuts, and cover at piston end of
housing. Remove “0” ring.
CAUTION: During the following procedure, the piston will
pop out of housing under spring pressure. Exercise caution
to prevent possible injury.
3. Remove locknut, flat washer, and piston from push
rod. Remove “0” ring and felt oilers from piston.
4. Remove compression spring and piston stop from
bore of shift unit housing.
5. Remove clevis pin, then remove push rod from shift
unit housing. Remove “0” ring from push rod.
6. Remove actuating lever and pin assembly from shift
unit housing. Do not disassemble actuating lever.
CAUTION
“O” Ring
“O” Ring
Actuating
Lever
Assembly
Piston
Felt Oilers
Compression
Spring
Shift Unit
Housing
Piston Rod
Clevis Pin
Compression
Spring
Piston
Stop
“O” Ring
Shift Fork
Swivel Pin
Actuating
Lever
Actuating
Lever Pin