10
Figure 5
Flange Seal of Bottom Bearing Cap
Pinion Cage Subassembly
1. Place O-ring (
506
) on pinion shaft (
101
).
2. Place oil slinger (301) on pinion shaft.
3. Press head bearing cone (
311
) on pinion shaft making sure
oil slinger and bearing are against gear.
4. Press bearing cups (
311
and
312
) into pinion cage.
5. Lower pinion cage on pinion shaft, until head bearing cone
and cup mate.
6. Press tail bearing cone (
312
) on pinion shaft until it mates with
its bearing cup.
7. Install locknuts and lockwasher (103 and
104
). Tighten nuts on
bearing cone until 5 to 15 in·lb
ƒ
(565-1695 mN·m) of bearing
preload is obtained. Bearing preload is the resistance in the
bearings to shaft rotation measured in in·lbƒ required to rotate
the shaft at uniform velocity. Preload is necessary to insure the
stability of the gear engagement. Crimp the lockwasher to hold
the two nuts in place.
8. Install O-ring (
504
) in groove.
9. Press oil seal (
501
) into pinion shaft.
10. Position O-ring (
505
) and push cap - with seal - in place on
shaft. Attach cap to pinion cage with cap screws.
11. Record the pinion setting distance that is etched on the pinion
gear.
Installation of Fan Shaft
1. Press ring gear hub (
8
) and the upper and lower bearing cones
(
411
and
412
) on the fan shaft (
201
). Install ring gear (
101
) on
ring gear hub and tighten cap screws to 90 ft·lb
ƒ
(123 N·m) .
2. Install upper fan shaft bearing cup (
412
) and bearing retainer
without shims.
3. Turn the Geareducer case upside down and install the fan
shaft assembly seating the upper fan shaft bearing cone into
its cup. Install the lower bearing cup (
411
).
4. Install the bottom cover cap using sealer as indicated in
Figure
5
and tighten cap screws to 25 ft·lb
ƒ
(34 N·m). Use old shim
pack or make up equivalent thickness shim pack (
420
) and
install the bottom bearing retainer cap. Do not install the O-ring
for the bottom bearing retainer at this time. Tighten the cap
screws to 25 ft·lb
ƒ
(34 N·m).
5. Turn the Geareducer right side up and rotate the fan shaft
several turns in each direction to seat the bearing rollers. With
a dial indicator and using the Geareducer case as a reference,
measure and adjust the fan shaft bearings to .003-.005" (.076-
.127mm) endplay. The endplay is adjusted by adding shims
(part
420
) under the upper bearing retainer.
6.
For "S" Models Only:
Once proper end play is obtained install
fan shaft oil seal in the upper bearing reatainer.
1/8" DIA. BEAD
OF RTV SILICON
GASKET SEALER
Installation of Pinion Cage
1. The "X" marked pinion and gear teeth should be clearly identi-
fied with chalk or other markings which can be seen from the
inspection opening or the bottom of the case.
2. Find the difference between the pinion setting distance of
the old gear and the new pinion gear and adjust the old shim
pack (
320
) or make a new shim pack to compensate for the
different setting distances.
Example:
Pinion setting distance of old gear
4.883
Pinion setting distance of new gear
4.878
Difference
.005
Remove .005 from shim gap.
3. Install shims (
320
) and pinion cage subassembly.
Note
—Care must be taken not to damage the pinion gear teeth
by forcing them into the ring gear teeth.
field repair
Содержание Marley Geareducer 2200
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