12
field repair
Figure 11
Gear Match Numbers and Setting Data
MATCHED NUMBER TO BE COMPARED WITH THE SAME
NUMBER ON THE RING GEAR. (EXAMPLE CO-43)
PINION SETTING DISTANCE. (EXAMPLE 4.860)
BACKLASH (NORMAL) AT WHICH THE GEARS WERE
LAPPED. (EXAMPLE .010)
MATCHED NUMBER TO BE COMPARED WITH THE SAME
NUMBER ON THE PINION GEAR. (EXAMPLE C0-43)
THE PINION SETTING DISTANCE IS THE DISTANCE
THE END OF THE PINION SHOULD BE FROM THE
CENTERLINE OF THE RING GEAR SHAFT.
Figure 10
Disassembly of Fan Shaft
Disassembly of Fan Shaft
Part numbers and references—refer to
Figures 6 and 10
.
1. Press helical ring gear (
201
), lower fan shaft spacer (
40
) and
lower cone (
421
) from shaft. Remove key spacer ring.
2. Remove upper bearing cone (
422
).
3. Remove upper fan shaft bearing cup (
422
) from case cover
(not illustrated).
4. Remove lower fan shaft bearing cup (
421
) from case (not
illustrated).
Assembly of Geareducer
Gear Match Numbers and Setting Data
Before assembling a new pinion gear in the pinion cage check
match numbers on pinion gear and spiral bevel ring gear to be
certain that they are a matched set. Gears are lapped in matched
sets at the factory and should not be separated. Numbers are
etched on both the pinion and ring gear as illustrated in
Figure 11
.
Pinion Cage Assembly
Part numbers and references—refer to
Figures 6 and 12
.
1. Press oil slinger (
102
) onto pinion shaft.
2. Install pinion head bearing cone (
402
) on pinion shaft.
3. Press pinion head bearing cup (
402
) into pinion cage.
4. Press pinion tail bearing cup (
401
) into pinion cage.
5. Lower pinion cage over pinion shaft until head bearing cone
(
402
) mates with cup.
6. Press tail bearing cone (
401
) onto pinion shaft.
a. Lock with lock nuts (
103
) and lockwasher (
104
) to provide
bearing preload of 10 to 18 in·lb
ƒ
(1130-2034 mN·m)
resistance to rotation of pinion shaft.
b. Crimp ears of lockwasher (
104
) to locknuts after obtaining
prober preload.
7. For Inpro/Seals (
701
) press the stator into the pinion cage
cap.
For conventional lip seals (
701
) install the lip seal in the
pinion cage cap.
8. Apply a bead of RTV sealer on the face of the pinion cage
interface with the pinion cage cap, encircling all the holes.
Fasten the pinion cage cap to the pinion cage. Tighten bolts
(
23
) to 55 in·lb
ƒ
(75 N·m) torque. For Inpro/Seal complete
the rotor installation per the instructions included with the
seal.
1
2
Summary of Contents for Geareducer 3600
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