NOTE
1. Remove the six bolts and three bolt
locks which secure the bearing retainer
t o t h e i d l e r g e a r , and remove the bear-
The idler gear bearing is a match
assembly.
D o not mix components.
ing retainer.
NOTE
shoulder
1. Support the idler gear,
down, o n t h e b e d o f a n a r b o r p r e s s .
The component parts of the idler
Start one of the bearing cups, numbered
gear bearing are matched; there-
side up, squarely into the bore of the
fore, matchmark the parts during
gear.
Then
press
the bearing cup
disassembly to ensure reassembly
against the shoulder of the gear. Use a
of the parts in their original posi-
flat steel plate (pre-load test plate) be-
tions.
tween
the
ram
of
the
press
and
the
b e a r i n g cup.
2. Clean the idler gear and bearing as-
2. Lay the outer spacer ring on the face
sembly with fuel oil and dry it with com-
of the bearing cup.
pressed air.
3. Start the other bearing cup, num-
3. Place the idler gear and bearing as-
bered side down, squarely into the bore
sembly in an arbor pressure with the
of the gear.
Then press the cup tight
bearing cone or inner race supported on
a g a i n s t t h e s p a c e r r i n g . U s e a flat steel
steel blocks as shown in Figure 11B-162.
While rotating the gear assembly, press
plate (pre-load test plate) between the
ram of the press and the bearing cup.
the hub out of the bearing. Remove the
gear assembly from the arbor press and
4. Press the inner bearing cone (num-
r e m o v e the bearing cones and spacers.
bered side up) on the idler gear hub,
flush with the inner hub mounting face.
4. Tap the bearing cups and spacer
rings f r o m t h e i d l e r g e a r b y u s i n g a
Use the pre-load test plate (with the
large center hole) between the ram of the
brass drift alternately at four notches
press and the bearing.
provided around the shoulder of the
gear.
5. Install the inner spacer ring on the
idler gear hub so that the oil hole in the
hub is 180 from the gap in the inner
Inspection
spacer ring.
Wash the idler gear, hub and bearing
components thoroughly in clean fuel oil
and dry with compressed air.
Check the idler gear hub and spacer.
Inspect the bearings carefully for wear,
pitting, scoring or flat spots on the roll-
ers or cones.
Replace the bearing if it
is defective.
Examine the gear teeth for evidence of
scoring, pitting and wear.
If severely
damaged or worn, replace the gear. Al-
so, i n s p e c t t h e o t h e r g e a r s i n t h e g e a r
train.
A s s e m b l e Idler Gear Assembly
Refer to Figure 11B-163 on page 11B-108
and assemble the bearing components in
their original positions (refer to identifi-
cation marks made during disassembly)
a s outlined below:
F i g u r e 11B-162. Pressing Hub Out of
Bearing
Engine (Less Major Assemblies)
11B-107
