JLG 600SC_660SJC Service Manual - Manual (Page 110)

SECTION 6 - UNDERCARRIAGE
6-6 – JLG Lift – 3120898
NOTE: Do not reuse bearings (12) and (13). Use new parts
for replacement.
NOTE: Bearing (13) is a straight bearing.
2. Lower the temperature of the bearing (13). Use tool-
ing (A) and a press to install bearing (13) in the
inside bore of the carrier roller. Install the bearing
until the bearing is even with the shaft counterbore
in the carrier roller.
NOTE: Bearing (12) has a flange.
3. Lower the temperature of the bearing (12). Use tool-
ing (A) and a press to install bearing (12) in the out-
side bore of the carrier roller. The outside bore can
be identified by three threaded holes (H) in the track
carrier roller. Install the bearing until the flange on
the bearing makes contact with the counterbore in
the track carrier roller.
4. Replace the o-ring seal that is used in collar (11)
with a new o-ring seal. Install the o-ring seal in the
collar. Put clean oil on the o-ring seal.
5. Use a press to install collar (11) on shaft (8). Install
collar (11) until dimension (X) is 5.09 ±0.01 inch
(129.2 ±0.2 mm).
6. Use the following procedure to determine shaft end
play.
NOTE: Do not install the Duo-cone seal kits in the track car-
rier roller or collar (11) at this time.
a. Install shaft assembly (8) in the track carrier
roller without Duo-Cone seal kits.
b. Install retainer (7) and socket head bolts (5) and
(6) on the end of the shaft assembly (8).
c. Use tooling (C) to measure the end play of the
shaft assembly (8). The end play of the shaft
assembly must be 0.008 inch to 0.030 inch(0.20
to 0.75 mm). Bearing (12) controls the amount of
end play.
d. Disassemble the track carrier roller, but do not
remove collar (11) from shaft (8).