Pivot Eye Repair; Pivot Eye Attachment - Komatsu 930E-2 Shop Manual

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 replacement.
Removal
To remove the axle housing pivot eye:
1. Follow all preceding instructions for "Pivot Pin
Removal".
Be certain axle housing (1) and wheels are
blocked securely.
2. Attach a lifting device to the pivot eye (4).
3. Remove capscrews (2) and flatwashers (3). Re-
move pivot eye.
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. = 8.7484 ±0.0005 in. (222.209 ±0.013 mm)
O.D.= 9.7520 ±0.0005 in. (247.701 ±0.013 mm)
3. Inspect pivot eye structure bore for excessive
wear or damage.
Pivot eye bore (new):
9.7500 ±0.0005 in. (247.650 ±0.013 mm)
FIGURE 4-3. PIVOT EYE ATTACHMENT
1. Rear Axle Structure
2. Capscrew
G04014
3. Flatwasher
4. Pivot Eye
Rear Axle Housing Attachment
Assembly
1. Setup an appropriate tool to press bearing carrier
(3, Figure 4-2) into the bore of the 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 0.001 - 0.003 in. (0.025 - 0.08
mm) interference fit. Freezing the bearing carrier
will ease installation.
Lubrication groove in bearing carrier outer diame-
ter must align with lubrication fitting hole in pivot
eye structure.
2. Press bearing carrier into bore. Be certain the
carrier is pressed fully into the pivot eye bore,
flush with the sides.
3. Install spherical bearing (4) as described in "Pivot
Eye Bearing, Assembly".
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 housing.
Insert several capscrews (2) and flatwashers (3)
to align the parts. Remove the lifting device.
3. Install the remaining capscrews and flatwashers.
Tighten alternately until the pivot eye is properly
seated. Tighten capscrews to 1715 ft. lbs. (2325
N.m) final torque.
G4-3