Velvet Drive 72C 1.88:1 & 1.91:1 Reduction Unit Diagram (Later Style)
Ref #
Part #
Description
Qty.
1
VD-179864
Hex head bolt (7/16-14 x 1 3/4)
2
2
VD-103322
Lockwasher (7/16)
2
3
VD-179840
Hex head bolt (3/8-18 x 1 1/8)
6
4
CRU-RS2180
Lockwasher (3/8)
6
5
ALTO-023320
Coupling nut
1
6
VD-1000031001
Coupling
1
7
VD-4756D
Snap ring
1
8
VD-1017671001
Main shaft (1.91:1 only)
1
8A
VD-1017171004
Main shaft (1.88:1 only)
1
9
VD-L3-6
Ring gear (1.91:1 only)
1
9A
VD-1017162001
Ring gear (1.88:1 only)
1
10
N/A
Bearing assembly
1
11
VD-1000133010
Bearing cone*
1
12
VD-1000133009
Bearing cup*
1
13
VD-1017053002
Solid spacer (.820-.821 inch long)**
1
13A
VD-1017053003
Solid spacer (.829-.830 inch long)**
1
13B
VD-1017053004
Solid spacer (.832-.833 inch long)**
1
13C
VD-1017053005
Solid spacer (.835-.836 inch long)**
1
13D
VD-1017053006
Solid spacer (.838-.839 inch long)**
1
13E
VD-1017053007
Solid spacer (.841-.842 inch long)**
1
13F
VD-1017053008
Solid spacer (.844-.845 inch long)**
1
13G
VD-1017053009
Solid spacer (.847-.848 inch long)**
1
13H
VD-1017053010
Solid spacer (.850-.851 inch long)**
1
13I
VD-1017053011
Solid spacer (.853-.854 inch long)**
1
13J
VD-1017053012
Solid spacer (.856-.857 inch long)**
1
14
VD-1000044017
Oil seal
1
15
N/A
Bearing assembly
1
16
VD-1000133002
Bearing cone*
1
17
VD-1000133001
Bearing cup*
1
18
VD-1017065003
Reduction housing
1
19
VD-4734
Snap ring
1
20
VD-L7-104
Sun gear (1.91:1 only)
1
20A
VD-1017165004
Sun gear (1.88:1 only)
1
21
VD-4853B
Lock bolt (5/16-18 x 3/4)
6
22
VD-114605
Lockwasher (5/16) (1.88:1 only)
6
23
N/A
Lock plate (1.91:1 only), no longer supplied
3
24
N/A
Pinion carrier assembly (1.91:1 only), no longer supplied
1
24A
VD-1017659021
Pinion carrier assembly (1.88:1 only)
1
25
VD-4827
Retaining ring
1
26
VD-4717L
Pinion shaft pin
6
27
VD-L5-39
Pinion shaft
6
28
VD-L3-43
Pinion thrustwasher
12
29
VD-4741A
Roller bearing (1.91:1 only)
288
29A
VD-1000131011
Roller bearing (1.88:1 only)
288
30
VD-L3-41
Roller bearing spacer (1.91:1 only)
18
30A
VD-1000053024
Roller bearing spacer (1.88:1 only)
18
31
VD-L4-5
Pinion gear (1.91:1 only)
6
31A
VD-1017163002
Pinion gear (1.88:1 only)
6
32
VD-L9-150
Planetary cage (1.91:1 only), no longer supplied
1
32A
VD-1017159011
Planetary cage (1.88:1 only)
1
33
N/A
Pinion carrier gasket (1.91:1 only)
1
34
N/A
Lube oil strainer (1.91:1 only), no longer supplied
1
35
N/A
O-ring (1.91:1 only)
1
36
ALTO-023023
Rear adapter gasket
1
37
VD-1000183073
Lock bolt (7/16-14 x 7/8)
6
38
VD-103322
Lockwasher (7/16)
6
39
N/A
Reduction unit adapter*** (1.91:1 only), no longer supplied
1
39A
VD-1017172001
Reduction unit adapter****
1
40
VD-4816
Snap ring
1
41
VD-1000130018
Bearing
1
42
ALTO-023021
Front adapter gasket
1
*Replace both parts if one is damaged
**Select correct size spacer at assembly. Only one required.
***For use with 1.91:1 noise reduction parts. These include lock plates (23), pinion carrier gasket (33), and o-ring (35).
****For use with 1.88:1 or 1.91:1 without noise reduction parts.