MD21B; AQD21B Transmissions Lower Gear Unit S-Drive Unit 110S EPC Volvo Penta Parts catalog

Lower Gear Unit S-Drive Unit 110S

Pos.	Part No	Qty	Parts name	Comments
1.	851485	[1]	Lower gear
2.	851486	[1]	Lower gear
3.	851473	[1]	Bearing housing
4.	850071	[1]	Countershaft
5.	914459	[1]	Snap ring
6.	26413	[1]	Shim	TH=0.1mm
6.	26411	[1]	Shim	TH=1.0mm
7.	18559	[1]	Ball bearing
8.	804303	[1]	Adjusting washer	TH=0,05mm
8.	34615	[1]	Shim	TH=0,10mm
9.	806620	[1]	Roller bearing
10.	181288	[1]	Needle bearing
11.	851286	[1]	Gear set
12.	382005	[1]	Disc spring
13.	946363	[1]	Lock nut
14.	897426	[2]	Sealing ring
15.	851301	[1]	Propeller shaft
16.	181287	[1]	Ball bearing
17.	906635	[1]	Round nut
18.	87655	[1]	Shim	TH=0,10mm
18.	191840	[1]	Shim	TH=0.15mm
19.	907025	[1]	Lock washer
20.	897341	[1]	Thrust ring
21.	183390	[1]	Needle roller bushin
22.	925257	[2]	O-ring
23.	963706	[2]	Hex. socket screw
24.	832965	[1]	Ring
25.	804262	[1]	Plug
26.	804261	[1]	Gasket
27.	850304	[1]	Splined sleeve
28.	963711	[6]	Hex. socket screw
29.	942551	[6]	Washer
30.	21389074	[1]	Rubber bellows
31.	960238	[1]	O-ring
32.	875812	[1]	Zinc ring kit
33.				(850073)
34.	851287	[1]	O-ring
35.	963695	[4]	Hex. socket screw
36.	953031	[6]	Stud
37.	955781	[6]	Hexagon nut
38.	850396	[1]	Propeller cone kit	See group 4A
38A.	850888	[1]	Plastic washer
39.	851773	[1]	Screw	(949325) see group 4A
40.	949807	[1]	Split pin	Replaced by 1pc 851340 and 1pc 853561
41.	852044	[1]	Castle nut	Replaced by 1pc 851340 and 1pc 853561

Upper Gear Unit S-Drive Unit 110S

S-Drive Unit

Aquamatic Drive Unit

Reverse Gear MS3B: 852003

Reverse Gear MS3B: 852002

Reverse Gear MS3B: 852001

Upper Gear Unit AQ Drive Unit 280

Intermediate Housing AQ Drive Unit 280

Lower Gear Unit AQ Drive Unit 280