Komatsu 830E-AC Shop Manual page 501

PIVOT EYE REPAIR
If damage occurs to the pivot eye (4, Figure 4-3), it
may be necessary to remove it from the rear axle
structure (1) to facilitate repair and bearing replace-
ment.
Removal
To remove the axle housing pivot eye:
1. Follow all the preceeding instructions for Pivot
Pin Removal.
NOTE: Be certain axle housing (1) and wheels are
blocked securely!
2. Attach a lifting device to the pivot eye (4).
3. Remove cap screws (2) and flatwashers (3).
Remove pivot eye to work area.
Installation
1. Be certain mating surfaces of axle housing (1,
Figure 4-3), and pivot eye (4) are clean and not
damaged.
2. Lift pivot eye into position on front of axle hous-
ing. Insert several cap screws (2) and flatwash-
ers (3) to align the parts. Remove the lifting
device.
3. Install the remaining cap screws and flatwash-
ers. Tighten alternately until the pivot eye is
properly seated. Tighten cap screws to 2007
N-m (1480 ft lbs) final torque.
FIGURE 4-3. PIVOT EYE ATTACHMENT
1. Rear Axle Structure
2. Cap Screw
G04022
3. Flatwasher
4. Pivot Eye
Rear Axle Housing Attachment
Disassembly
1. Remove spherical bearing (4, Figure 4-2) as
described in Pivot Eye Bearing, Disassembly.
2. If bearing carrier (3) is damaged or worn, setup
an appropriate tool to press bearing carrier out
of the pivot eye structure bore.
Bearing Carrier (new):
I.D. 222.209 ± 0.013 mm (8.7484 ± 0.0005 in.)
O.D. 247.701 ± 0.013 mm (9.7520 ± 0.0005 in.)
3. Inspect pivot eye structure bore for excessive
wear or damage.
Pivot Eye Bore (new):
247.650 ± 0.013 mm (9.7500 ± 0.0005 in.)
Assembly
1. Setup an appropriate tool to press bearing car-
rier (3, Figure 4-2) into the bore of the pivot eye
structure (1). Be certain the bearing carrier is
pressed fully into the pivot eye bore, flush with
sides. Lube groove in bearing carrier outer
diameter must align with lube fitting hole in pivot
eye structure.
NOTE: With parts to correct size, the fit of the
bearing carrier into the bore of the pivot eye structure
may be: 0.025 mm - 0.08 mm (0.0010 in. - 0.0030 in.)
interference fit.
Freezing the bearing carrier will ease installation.
2. Install spherical bearing (4) as described in
Pivot Eye Bearing, Assembly.
G4-5