PROPEL GEAR CASE
SUBSECTION 9D
3. Lift output shaft (06) out of output carrier (08).
4. Remove seal (01) and discard.
CENTER SECTION. To disassemble the center section, pro-
ceed as follows (see Figure 9D-12):
1. Place the center housing assembly so that it is resting on
the input side.
2. Remove the output gear set using eyebolts in the holes
provided in carrier (08).
NOTE
Shafts and gears should be marked to insure that
each shaft and gear set is located in its original bore
with care taken that the shafts are not rotated.
3. Drive roll pins (07) into shafts (10) so that they will clear
the carrier. Bronze shafts (10) may now be driven out.
4. Lift input gear set (16) straight up to remove it from the
housing.
Figure 9D-2. Bull Gear Removal
NOTE
Care should be taken to mark shafts, gears, and bear-
10. Remove capscrews (30) and lockwashers (31).
ings such that all are kept in their original locations in
11. Remove adapter assembly (32) from housing (57).
the carrier.
12. Slide coupler (24) out of gear (37).
5. Drive roll pin (23) into shaft (22) enough to clear the car-
13. Straighten the tong on washer (26) and remove nut
rier allowing the shaft to be driven out.
(25).
6. With gears (20) removed, output sun gear (15) maybe re-
14. Washer (27) and cone (28) can now be removed from
moved from carrier (16) by removing snap ring (17).
the top of the adapter and cone (35) and gear (37) can be re-
7. Remove all roll pins (07 and 23) from shafts (10 and 22).
moved from the bottom.
INPUT SECTION. To disassemble the input section, pro-
CLEANING AND INSPECTION
ceed as follows (see Figure 9D-12):
Clean and Inspect all gear case components as follows (see
1. Lift out input sun gear (18).
2. Set ring gear (13) on the output end and remove cap-
1. Clean all components with solvent and air dry.
screws (59).
2. Inspect bushing (05). If it is scored or worn, press it out
3. Input housing (57) may then be lifted straight up to clear
and replace.
the pilot of the ring gear.
3. Shafts (10) should be inspected to see that the gearing
4. Remove tie wire (46) from capscrews (47) and remove
surface is smooth. There wiII be a slight step on each shaft;
the capscrews.
this is normal seating-in wear. If the shafts are badly worn
(more than 0.040 inch wear), all four shafts must be re-
5. Lift bull gear (49) straight up and tilt it away from the
placed.
smaller gear (see Figure 9D-2).
4. All gears should be inspected to see that the bores are
6. Drive shaft (62) out of the case.
smooth and that all teeth are in good condition, free from
NOTE
cracks and pitting. A smooth polished surface IS normal in
Bearing assembly (43,50,51,54 and 55) is a matched
the bore of the planet gears.
set and care must be taken that all components in this
NOTE
assembly remain in their original position.
Spiral bevel gears (37 and 68) are a matched set. If
7. Remove capscrews (75) and cover (73) from the input
one needs. replacement, a complete set must be
housing.
ordered.
NOTE
5. Bearings and shafts should show no scoring or other
signs of distress or abnormal wear.
Spacer shims (72) should be retained as a set. If no
gears or bearings are replaced, these shims can be
6. Carrier spacer (12) should be inspected. If the thickness
reused
is less than 0.060 inches or it IS scored it should be re-
placed.
8. Remove cone (69) from shaft (67).
7. Check the outer end of sun gear (15). If it is scored, re-
9. Remove gear (68). shaft (67), and cone (66) from the
place it.
input housing.
9D-2
