2.57:1 and 2.91:1 Reduction Units - Current Production
INDEX PART DESCRIPTION QTY
NO. NUMBER
  NO NUMBER REDUCTION UNIT ASSEMBLY (2.57:1)  
  NO NUMBER REDUCTION UNIT ASSEMBLY (2.91:1)  
1 179864 . HEX HEAD BOLT (7/16-14 X 1-3/4) 2
2 103322 . LOCKWASHER (7/16) 2
3 179840 . HEX HEAD BOLT (3/8-18 X 1-1/8) 6
4 103321 . LOCKWASHER (3/8) 6
5 10-00-149-034 . COUPLING NUT 1
6 10-00-031-001 . COUPLING 1
7 10-17-659-007 . PINION CAGE AND OUTPUT SHAFT 1
    ASSEMBLY (2.57:1 ONLY)  
7A 10-17-659-008 . PINION CAGE AND OUTPUT SHAFT 1
    ASSEMBLY (2.91:1 ONLY)  
8 L6-135 . . OIL COLLECTOR RING (2.57:1 ONLY) 1
8A L4-135 . . OIL COLLECTOR RING (2.91:1 ONLY) 1
9 R10B-40 ..PINION SHAFT PIN (2.57:1 ONLY) 6
9A 4717L ..PINION SHAFT PIN (2.91:1 ONLY) 6
10 L5-39 ..PINION SHAFT 6
11 L6-43 . . THRUSTWASHER (2.57:1 ONLY) 12
11A L3-43 . . THRUSTWASHER (2.91:1 ONLY) 12
12 4741 A  ..ROLLER BEARING 288
13 L3-41 ..PINION BEARING SPACER 6
14 L6-5 ..PINION GEAR (2.57:1 ONLY) 6
14A L4-5 ..PINION GEAR (2.91:1 ONLY) 6
15 10-17-159-003 ..PINION CAGE AND OUTPUT SHAFT 1
      (2.57:1 ONLY)  
15A 10-17-159-004 ..PINION CAGE AND OUTPUT SHAFT 1
      (2.91:1 ONLY)  
16 NO NUMBER . BEARING ASSEMBL Y 1
17 10-00-133-010 ..BEARING CONE * 1
18 10-00-133-009 ..BEARING CUP * 1
19 10-17-053-002 . SOLID SPACER (.820-.821 INCH LONG) * * 1
19A 10-17-053-003 . SOLID SPACER (.829-.830 INCH LONG) * * 1
19B 10-17-053-004 . SOLID SPACER (.832-.833 INCH LONG) * * 1
19C 10-17-053-005 . SOLID SPACER (.835-.836 INCH LONG) * * 1
19D 10-17-053-006 . SOLID SPACER (.838-.839 INCH LONG) * * 1
19E 10-17-053-007 . SOLID SPACER (.841-.842 INCH LONG) * * 1
19F 10-17-053-008 . SOLID SPACER (.844-.845 INCH LONG) * * 1
19G 10-17-053-009 . SOLID SPACER (.847-.848 INCH LONG) * * 1
19H 10-17-053-010 . SOLID SPACER (.850-.851 INCH LONG) * * 1
191 10-17-053-011 . SOLID SPACER (.853-.854 INCH LONG) * * 1
19J 10-17-053-012 . SOLID SPACER (.856-.857 INCH LONG) * * 1
20 10-00-044-017 . OIL SEAL 1
21 NO NUMBER . BEARING ASSEMBLY 1
22 10-00-133-002 . . BEARING CONE * 1
23 10-00-133-001 . . BEARING CUP * 1
24 4776BB . LOCK BOLT (7/,6-14 X 7/8) 2
25 10-17-036-001 . OIL BAFFLE 1
26 10-17-065-001 . REDUCTION HOUSING 1
27 4734 . SNAP RING 1
28 L6-104 . SUN GEAR (2.57:1 ONLY) 1
28A L7-104 . SUN GEAR (2.91:1 ONLY) 1
29 4853E . LOCK BOLT (7/16-14 X 1-1/4) 6
30 115550 . LOCKWASHER (7/16) 6
31 4756E . SNAP RING (2.57:1 ONLY) 1
31A 4756D . SNAP RING (2.91:1 ONLY) 1
32 L6-31 . STATIONARY GEAR PLATE (2.57:1 ONLY) 1
32A L7-31 . STATIONARY GEAR PLATE (2.91:1 ONLY) 1
33 L6-6 . RING GEAR (2.57:1 ONLY) 1
33A L3-6 . RING GEAR (2.91:1 ONLY) 1
34 L4-146 . REAR ADAPTER GASKET 1
35 L7-8A . REDUCTION UNIT ADAPTER 1
36 4816 . SNAP RING 1
37 10-00-130-018 . BEARING 1
38 L4-145 . FRONT ADAPTER GASKET 1
   *  REPLACE BOTH PARTS IF ONE IS DAMAGED.
* * SELECT CORRECT SIZE SPACER AT ASSEMBLY. ONLY ONE REQUIRED.
 
 
2.57:1 and 2.91:1 Reduction Units - Early Production
INDEX PART DESCRIPTION QTY
NO. NUMBER
  NO NUMBER REDUCTION UNIT (2.57:1 ONLY)  
  NO NUMBER REDUCTION UNIT (2.91:1 ONLY)  
1 10-00-149-034 . COUPLING NUT 1
2 4912 . COUPLING 1
3 179860 . HEX HEAD BOLT (7/16-14 X 1-1/4) 6
4 103322 . LOCKWASHER (7/16) 6
5 L4-7 . BEARING RETAINER, NO LONGER SUPPLIED 1
6 L4-147 . BEARING RETAINER GASKET 1
7 71C-110 . OIL SEAL 1
8 4920 . BEARING 1
9 L6-A2D . PINION CAGE AND OUTPUT SHAFT 1
      ASSEMBLY (2.57:1 ONLY), NO LONGER SUPPLIED  
9A L7-A2D . PINION CAGE AND OUTPUT SHAFT 1
      ASSEMBLY (2.91:1 ONLY), NO LONGER SUPPLIED  
10 L7-1A . REDUCTION HOUSING, NO LONGER SUPPLIED 1
NOTE: These early production parts are not interchangeable with current production
           parts. All other parts are the same.