14. Using the ROBINAIR HEAT GUN (Part No. HD-25070),
uniformly heat the bearing inner race for about 30 seconds
using a circular motion.
NOTE
To facilitate removal without heat, apply a light penetrating oil
to shaft and leading edge of bearing inner race.
15. Turn forcing screw until bearing inner race is pulled free
of sprocket shaft.
16. Remove thrust washer from sprocket shaft.
1. Forcing screw
2. 3/8-16 in. bolt with flat washer
3. Bridge
4. Hardened washer
5. Wedge attachment
6. Bearing inner race
7. Sprocket shaft
Figure 3-139. Remove Inner Race from Sprocket Shaft
Installation
1. Place new thrust washer over sprocket shaft.
2. Place new bearing inner race on bench top. Using the
ROBINAIR HEAT GUN (Part No. HD-25070), uniformly
heat bearing inner race for about 60 seconds using a cir-
cular motion.
3. Wearing suitable gloves to protect hands from burns, place
heated bearing inner race over sprocket shaft.
NOTE
To facilitate installation without heat, apply a light penetrating
oil to shaft and leading edge of bearing inner race.
Do not use heating devices with penetrating oil. Penet-
rating oil is flammable which could result in death or ser-
ious injury. (00375a)
4. See Figure 3-140. Obtain the SPROCKET SHAFT
BEARING TOOL (Part No. HD-97225-55C). Assemble
tool as described below.
a. See Figure 3-141.Thread pilot adapter into sprocket
shaft.
b. Thread pilot shaft onto pilot adapter.
c. Slide long collar over pilot shaft until it contacts
bearing inner race.
d. Slide short collar over pilot shaft until it contacts long
collar.
e. Slide Nice bearing and large flat washer over pilot
shaft.
f. Sparingly apply graphite lubricant to threads of pilot
shaft to prolong service life and ensure smooth oper-
ation.
g. See Figure 3-142.Thread handle onto pilot shaft.
5. See Figure 3-143. Rotate handle of tool in a clockwise
direction until bearing inner race makes firm contact with
thrust washer.Verify that thrust washer cannot be rotated
by hand.
6. Remove handle, flat washer, Nice bearing, short collar,
long collar, pilot shaft and pilot adapter from sprocket shaft.