Group 26, Steer Axle
26-4-2 • Steering Axle Overhaul SM 765, Dec ’06
Preparation For Steer Axle
Disassembly and Over haul
N
TE
Cleanliness is of extreme importance in the
repair and overhaul of this assembly.
• Before starting disassembly, thoroughly clean the
axle assembly of all accumulations of dirt, oil, cor-
rosion, and other substances to prevent contamina-
tion of the parts during disassembly and overhaul.
• Work in a clean area.
• Keep all parts in order as disassembly progresses.
Take care to properly identify each part and its
order of removal. If necessary, keep notes and put
markings on parts using a non-destructive marker
such as a grease pencil or felt-tipped pen.
• If necessary, see Section 3, “Steer Axle Removal
and Replacement,” for the procedures to remove
the steer axle from the truck.
• See Section 5, “Steer Cylinder Removal and
Replacement,” for the procedures to remove the
steering cylinder and steering links from the steer
axle.
• See Section 6, “Steering Cylinder Overhaul,” to
disassemble the steer cylinder.
Steer Axle Disassembly
To disassemble the steering knuckle, kingpin, and bearing
from the steer axle, it is not necessary to remove the axle
from the truck.
1. Remove the snap ring from the bottom of the steering
link pin and remove the pin. Steering link is free to
be removed from the cylinder rod and knuckle.
2. Remove and discard cotter pin from kingpin castel-
lated nut. Remove the nut.
3. Drive the kingpin down and out of the assembly.
Remove the steering knuckle. Note right and left
knuckle parts.
IMP
RTANT
Do not let the knuckle or pin fall when the
pin is removed.
4. Remove the kingpin retainer pin from the base of
the kingpin.
5. Remove the knuckle bearing washers, dust covers,
upper and lower grease seals, bearings, and bear-
ing cups from the assembly.
Bearing cups may be removed by hand, by using a bearing
puller, or by tapping out using a brass drift pin.
Kingpin castel-
lated Nut
Kingpin
Retainer Pin
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