71C and 72C Transmission Assembly
Current Production

Ref #	Part #	Description	Qty
	10-17-000-(See Note 1)	TRANSMISSION ASSEMBLY (MODEL 71C)
	10-18-000-(See Note 1)	TRANSMISSION ASSEMBLY (MODEL 72C)
1	4775L	OUTPUT SHAFT NUT	1
2	4547BA	COUPLING (10-17 ONL Y)	1
2A	4547AY	COUPLING (10-18 ONLY)	1
3	71-7	BEARING RETAINER (10-17 ONLY)	1
3A	72-7	BEARING RETAINER (10-18 ONLY)	1
4	179859	HEX HEAD BOLT (7/16-14 X 1-1/4)	6
5	103322	LOCKWASHER (7/16) (10-17 ONL Y)	6
6	71C-110	OIL SEAL	1
7	10-00-130-017	BEARING (1 Pkg)	1
7A	10-00-130-018	BEARING (10-17)	1
7B	B309AGS	BEARING (10-18)	1
8	71-147	BEARING RETAINER GASKET (10-17 ONLY)	1
8A	72-147	BEARING RETAINER GASKET (10-18 ONLY)	1
9	* *	ADAPTER	1
9A	* *	ADAPTER	1
9B	* *	ADAPTER	1
10	* *	LOCK BOLT (7/16-14 X 7/8)	6
11	* *	LOCKWASHER (7/16) (10-18 ONLY)	6
11A	* *	LOCKWASHER (7/16) (10-17 ONLY)	6
12	* *	HEX HEAD BOLT (7/16-14 X 1-3/4)	2
13	* *	LOCKWASHER (7/16)	2
14	* *	ADAPTER GASKET	1
15	* *	BEARING	1
16	* *	RETAINING RING	1
17	10-17-559-001	DIPSTICK	1
17A	10-13-559-001	DIPSTICK TUBE	1
18	20-01-034-003	DIPSTICK TUBE	1
19	71-79B	SHIFT LEVER	1
20	9418892	HEX NUT (5/16-24)	1
21	108579	LOCKWASHER (5/16)	1
22	103340	FLATWASHER (5/16)	1
23	453632	STEEL BALL (5/16)	1
24	71-42	POPPET SPRING	1
25	10-00-640-004	NEUTRAL SWITCH ASSEMBLY	1
26	NO NUMBER	NEUTRAL SWITCH (NSS)	1
27	10-00-141-046	O-RING	1
28	10-16-039-001	VALVE COVER	1
29	179796	HEX HEAD BOLT (1/4-20 X 1/2)	3
30	103319	LOCKWASHER (1/4)	3
31	10-16-099-001	SWITCH CAM	1
32	71-14	VALVE COVER GASKET	1
33	71-A244A	CONTROL VALVE ASSEMBLY	1
34	4821	SNAP RING	1
35	71-246	SPRING RETAINER	1
36	71-242	VALVE SPRING	1
37	71-243	REGULATOR VALVE	1
38	4804H	O-RING	1
39	71-244A	CONTROL VALVE	1
40	71C-A60	PUMP ASSEMBLY	1
41	10-00-183-021	HEX HEAD BOLT (5/16-18 X 1-3/8)	4
42	10-00-044-014	OIL SEAL	1
43	3-61	PUMP GASKET	1
44	4873	WOODRUFF KEY	1
45	71C-A8	FORWARD AND REVERSE ADAPTER ASSEMBLY	1
46	20-00-183-017	CAPSCREW (3/8-16 X 1-1/4)	4
47	NO NUMBER	FORWARD AND REVERSE ADAPTER (NSS)	1
48	4840D	NEEDLE BEARING	1
49	71-144B	GASKET	1
50	X1516H	PIPE PLUG (1/4)	1
51	71-35	REVERSE CLUTCH PISTON	1
52	4805A	CLUTCH SEALING RING	1
53	4804G	O-RING	1
54	71-71	REVERSE CLUTCH PRESSURE PLATE	1
55	72-176	STEEL CLUTCH PLATE	*0-2
56	72-A66B	FRICTION CLUTCH PLATE	*1-3
57	71-97	PRESSURE PLATE SPRING	11
58	71-87A	DOWEL PIN (.312 DIA X .438 LONG)	3
58A	R6-177	DOWEL PIN (.312 DIA X .621 LONG)	3
58B	4622E	DOWEL PIN (.312 DIA X .875 LONG)	3
58C	10-00-043-031	DOWEL PIN (.312 DIA X 1.000 LONG)	3
59	71-15B	* THRUSTWASHER	1
59A	10-16-193-001	THRUSTWASHER	1
60	4822	SNAP RING	1
61	R6A-7-1/2	SNAP RING (10-17 ONLY)	1
61A	4766B	SNAP RING (10-18 ONLY)	1
62	4734	SNAP RING (10-17 ONLY)	1
62A	4559A	SNAP RING (10-18 ONLY)	1
63	10-00-130-017	BEARING (10-17 ONLY)	1
63A	10-00-130-016	BEARING (10-18 ONLY)	1
64	71-70	FORWARD CLUTCH CYLINDER (10-17 ONLY)	1
64A	72-70	FORWARD CLUTCH CYLINDER (10-18 ONLY)	1
65	10-16-124-001	FORWARD CLUTCH PISTON	1
65A	71-45	CLUTCH PISTON SUPERSEDED BY 1016-124-001	1
66	5M-122	O-RING	1
67	5L -36	PISTON SEALING RING	1
68	5C-33	CLUTCH SPRING BEARING RING	1
69	3-37	CLUTCH BELLEVILLE SPRING	1
70	4755	SNAP RING	1
71	5C-175A	CLUTCH PRESSURE PLATE	1
72	10-16-166-001	STEEL CLUTCH PLATE (10-17 ONLY)	4
72A	10-16-166-001	STEEL CLUTCH PLATE (10-18 ONLY)	6
73	5C-A66A	FRICTION CLUTCH PLATE (10-17 ONLY)	5
73A	5C-A66A	FRICTION CLUTCH PLATE (10-18 ONLY)	7
74	5L-67	CLUTCH PRESSURE PLATE	1
75	10-00-139-048	SNAP RING (.033-.037 THICK) (10-17 ONLY) (Yellow)	1
75A	10-00-139-049	SNAP RING (.050-.054 THICK) (10-17 ONLY) (Pink)	1
75B	4768	SNAP RING (.050-.054 THICK) (10-18 ONLY) (Green)	1
75C	4768A	SNAP RING (.074-.078 THICK) (10-18 ONL Y) (Orange)	1
75D	4768B	SNAP RING (.096-.100 THICK) (10-18 ONLY) (White)	1
75E	10-00-139-018	SNAP RING(.062-.066 THICK) (10-18 ONLY) (Purple)	1
76	71-6	RING GEAR (10-17 ONLY)	1
76A	10-16-162-001	RING GEAR (10-18 ONLY)	1
77	71-17	THRUSTWASHER	1
78	4806J	SEALING RING	2
79	4495	SNAP RING	1
80	71-40	FORWARD CLUTCH HUB (10-17 ONLY)	1
80A	10-16-179-001	FORWARD CLUTCH HUB (10-18 ONLY)	1
81	218211	WOODRUFF KEY (10-17 ONLY)	1
81A	124553	WOODRUFF KEY (10-18 ONLY)	1
82	71C-3A16	DRIVE GEAR ASSEMBLY (10-17 ONLY)	1
82A	72C-2A16	DRIVE GEAR ASSEMBLY (10-18 ONLY)	1
83	4806B	SEALING RING	4
84	71-9C	BUSHING	2
85	10-17-659-* * *	PINION CARRIER ASSEMBLY (10-17 ONLY)	1
85A	10-18-659-* * *	PINION CARRIER ASSEMBLY (10-18 ONLY)	1
86	71-159	THRUSTWASHER (USE W/BUSHING STYLE CASE)	1
86A	10-17-193-001	THRUSTWASHER (USE W/SEALING RING STYLE CASE)	1
87	10-17-036-002	OIL BAFFLE (USED ON 71 C)	1
87A	10-18-036-001	OIL BAFFLE (USED ON 72C)	1
88	10-00-191-002	PLUG (3/8-18)	2
89	4885B	DRYSEAL BUSHING (3/4-14)	1
90	5L-222	SPRING, EARLY MODELS, NO LONGER USED	1
91	35-143	FLAT WASHER, EARLY MODELS, NO LONGER USED	1
92	10-00-238-002	OIL INLET SCREEN	1
93	71C-84	OIL RETURN TUBE	1
94	71C-A98	OIL STRAINER ASSEMBL Y	1
95	A4740G	BREATHER	1
96	444866	PIPE PLUG (3/8-18)	1
97	444687	PIPE PLUG (1/8-27)	1
98	10-17-565-* * *	CASE (10-17 ONLY)	1
98A	10-18-565-* * *	CASE (10-18 ONLY)	1
NSS - NOT SERVICED SEPERATELY, BUY NEXT HIGHER ASSEMBLY
Note 1: REFER TO ASSEMBLY NUMBER ON ID TAG (See Figure 1)
*SEE CHART ON PAGE 34 TO DETERMINE PROPER AMOUNT.
**REFER TO REDUCTION SECTION IN BACK OF MANUAL.
*** CHECK MODEL CHART ON VELVET DRIVE PAGE TO DETERMINE CORRECT PART NUMBER
NOTE: The following kits are available for the Model 71 C and 72C transmissionsIndex numbers shown match the index numbers on the Above exploded-view
Ref #	Part #	Description	Qty
	A4867AB	FORWARD CLUTCH PACK KIT (10-18 ONLY)
71	5C-175A	>CLUTCH PRESSURE PLATE	1
72A	10-16-166-001	STEEL CLUTCH PLATE	6
73A	5C-A66A	FRICTION CLUTCH PLATE	7
74	5L-67	CLUTCH PRESSURE PLATE	1
Ref #	Part #	Description	Qty
	A4867AE	FORWARD CLUTCH PACK KIT (10-17 ONLY)
71	5C-175A	CLUTCH PRESSURE PLATE	1
72	10-16-166-001	STEEL CLUTCH PLATE	4
73	5C-A66A	FRICTION CLUTCH PLATE	5
74	5L-67	CLUTCH PRESSURE PLATE	1
Ref #	Part #	Description	Qty
	A4867HA	OIL SEAL AND SEALING RING KIT
6	71C-110	OIL SEAL	1
38	4804H	O-RING	1
42	1 0-00-044-014	OIL SEAL	1
43	22341	.PUMP GASKET	1
52	4805A	CLUTCH SEALING RING	1
53	4804G	O-RING	1
66	5M-122	O-RING	1
67	5L-36	CLUTCH SEALING RING	1
78	4806J	SEALING RING	2
83	4806B	SEALING RING	4
	10-00-044-017	OIL SEAL (REDUCTION UNITS ONLY)	1
	10-17-410-002	SERVICE GASKET KIT (See Next Kit List)	1
Ref #	Part #	Description	Qty
	10-17-41 0-002	SERVICE GASKET KIT
8	71-147	BEARING RETAINER GASKET (10-17 ONLY)	1
8A	72-147	BEARING RETAINER GASKET (10-18 ONLY)	1
14	L4-146	ADAPTER GASKET	1
32	71-14	VALVE COVER GASKET	1
49	71-144B	GASKET	1
	L4-145	GASKET (REDUCTION UNITS ONLY)	1
	L4-147	GASKET (REDUCTION UNITS ONLY)	1
Ref #	Part #	Description	Qty
	10-04-420-052	NEUTRAL SWITCH KIT
	10-00-539-001	SWITCH AND BODY ASSEMBL Y	1
25	10-00-640-004	..NEUTRAL SWITCH ASSEMBLY	1
28	10-16-039-001	VALVE COVER	1
29	179796	HEX HEAD BOLT (1/4-20 X 1/2)	3
30	103319	LOCKWASHER (1/4)	3
31	1 0-16-099-001	SWITCH CAM	1
32	71-14	VALVE COVER GASKET	1
	1340	INSTRUCTION SHEET	1
Ref #	Part #	Description	Qty
	10-95-410-002	SNAP RING SERVICE KIT
15	4766	RETAINING RING	1
34	4821	SNAP RING	1
60	4822	SNAP RING	1
61	R6A-71/2	SNAP RING (10-17 ONLY)	1
61A	47668	SNAP RING (10-18 ONLY)	1
62	4734	SNAP RING (10-17 ONLY)	2
62A	4559A	SNAP RING (10-18 ONLY)	1
70	4755	SNAP RING	1
75	10-00-139-048	SNAP RING (.033-.037 THICK)(10-17 ONLY) (Yellow)	1
75A	10-00-139-049	SNAP RING (.050-.054 THICK)(10-17 ONLY) (Pink)	1
758	4768	SNAP RING (050-.054 THICK)(10-18 ONLY) (Green)	2
75C	4768A	SNAP RING (.074-.078 THICK)(10-18 ONLY) (Orange)	1
75D	47688	SNAP RING (.096-.100 THICK)(10-18 ONLY) (White)	1
75E	10-00-139-018	SNAP RING (.062-.066 THICK)(10-18 ONLY) (Purple)	1
79	4495	SNAP RING	1
	4756D	SNAP RING (REDUCTION UNITS ONLY)	1
	4756E	SNAP RING (REDUCTION UNITS ONLY)	1
	4816	SNAP RING (REDUCTION UNITS ONLY)	1
	4766A	SNAP RING (REDUCTION UNITS ONLY)	1

Reverse Plates use in each model
	Steel Plates	Friction Plates
1017-001	0	1
1017-002	0	1
1017-003 throuqh 1017-108 use 1 steel and 2 friction plates
1017-202*	1	2
1017-206*	1	2
* The 1017-202 and 1017-206 was originally built with 2 special steel plates and one friction plateVelvet Drive recommends changing this configuration to 1 steel and two frictionIf the steel plates removed are .080" to .084" thick, destroy and discard themThey are no longer used in any Velvet-Drive transmissionOnlyplates measuring .066" to .071" are to be used in any 1017- or 1018-transmission.
	Steel Plates	Friction Plates
1018-001	1	2
1018-002	1	2
1018-003 through 1018-106 use 2 steel and 3 friction plates.