This is a very practical manual

1. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Engine And Equipment Page010-0000

2. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Engine And Equipment Page010-0000

3. MF 6120 TRACTOR - 1637273
1-AA01-607-C
22 1013
28
30
2916 32
12
119 19
18
17
21 120
14
15
31
4
3 5
8
7 6
24
25
26
23
27
2
Ref AA011607-1 Page 010-0010

4. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Engine - Up to Serial or Engine Number E025037 Page010-0010
Item Part Number Qty Description Comments
1 3714083M1 1 Engine 1004
PEL-LM31283
2 4222707M91 1 Short Engine Replace and repair. Old not interchangeable with new 4222029M91
3 353519X1 4 Screw Unf
4 3714074M1 1 Spacer
5 339374X1 4 Lock Washer
6 3714629M1 1 Gasket Length 310 MM
7 3637340M1 1 Fan
8 3712101M1 1 Cowl [B]
Up to Serial or Engine Number D080028
3714616M2 1 Cowl [B]
From Serial or Engine Number D080029
9 390734X1 1 Washer
10 3763362M91 1 Startermotor
11 3009693X1 3 Nut Metric M10
12 339376X1 3 Lock Washer
13 3618907M1 1 Alternator 70 AMP
14 3619452M91 1 Support
15 3009503X1 3 Bolt Metric M10X90
16 3619507M1 1 Tensioner
17 339123X1 2 Hex. Sock.
Screw
M8X20
18 3009498X1 1 Bolt Metric M10X55
19 3009693X1 1 Nut Metric M10
20 339009X1 1 Hex. Sock.
Screw
M8X35
21 385361X1 1 Washer
22 339169X1 1 Nut M8
23 3582678M91 1 Cowl [A]
24 3712102M1 Strap [B]
Up to Serial or Engine Number D080028
Replace and repair. Old not interchangeable with new 3581600M1
25 390972X1 2 Washer Metric Up to Serial or Engine Number D080028
26 339228X1 2 Screw Metric M8X12
Up to Serial or Engine Number D080028
27 3712099M2 1 Cowl
28 3712097M1 1 Cowl
29 390734X1 3 Washer
30 339402X1 3 Nut M10
31 3619356M91 1 Kit, Belt
32 4222720M1 3 Stud Replace and repair. Old not interchangeable with new 3637111M1
FOOTNOTE [A] WITHOUT CONDITIONED AIR
FOOTNOTE [B] WITH CONDITIONED AIR

5. MF 6120 TRACTOR - 1637273
1-0560-610-C
29
18
3016
10
92 11
27
17
12
4
15
22
24
32
25
31
20 19
1
8
283
7 14
23
6
26
13
5
21
Ref 05601610-1 Page 010-0045

6. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Cylinder Block - 4.41 Engine Page010-0045
Item Part Number Qty Description Comments
1 4222540M91 1 Kit,Cyl.Block Replace and repair. Old not interchangeable with new 4222031M91
2 3637333M1 4 Liner [B]
(1)
3637334M1 X Liner [C]
3 731354M1 8 Plug (1)
4 746259M1 4 Plug (1)
5 3641755M1 2 Screw
6 733072M1 10 Ring (1)
7 1476108X1 10 Screw (1)
8 4222017M1 1 Bush (1)
9 4222043M1 1 Plug (1)
Replace and repair. Old not interchangeable with new 3637015M1
10 746259M1 2 Plug (1)
11 376180X1 1 Plug (1)
12 4224555M1 1 Washer (1)
13 3638696M1 1 Joint
14 748416M1 1 Plate
15 746259M1 3 Plug (1)
16 1476282X1 1 Plug (1)
17 736868M1 1 Plug (1)
18 4222534M1 1 Head Gasket Replace and repair. Old not interchangeable with new 3641865M1
19 3640868M91 1 Housing
20 1447691M1 1 Seal (19)
21 4223587M1 1 Joint
22 3637011M1 12 Screw
23 376616X1 4 Bush (1)
24 731947M1 2 Dowel
25 3641756M1 2 Screw
26 348281X1 4 Screw (1)
27 363819X1 2 Plug (1)
28 731996M1 2 Plug
29 376670X1 1 Plug
30 3639268M1 2 Dowel [A]
31 731856M1 1 Plug
32 4223072M1 2 Plug
FOOTNOTE [A] USED ONLY WITH 4222031M91
FOOTNOTE [B] PRESS FIT
FOOTNOTE [C] SLIP FIT

7. MF 6120 TRACTOR - 1637273
1-0644-609-A
9 8
4
10
3
7
6
5
2
1
Ref 06441609-1 Page 010-0050

8. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Gear Drive Auxiliary Drive Options - 4.41 Engine Page010-0050
Item Part Number Qty Description
1 3638809M1 1 Screw
2 1650388M1 1 Washer
3 734594M1 1 Plate
4 3641767M1 1 Joint
5 4222836M1 1 Screw
6 3640979M1 1 Screw
7 3640978M1 1 Screw
8 1476131X1 2 Nut
9 1476127X1 2 Washer
10 3637137M1 1 Nut

9. MF 6120 TRACTOR - 1637273
1-0563-610-B
21
23
5
4
7 11
1
2 8
10
10
3 9
6
12
13
14 15
16
17
19 18
20
22
Ref 05631610-1 Page 010-0055

10. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Crankshaft, Pistons And Connecting Rods - 4.41 Engine Page010-0055
Item Part Number Qty Description Comments
1 3637034M91 4 Kit, Conrod
2 1 Conrod (1)
Not serviced,order REF.1
3 1 Cap (1)
Not serviced,order REF.1
4 733767M1 1 Bush (1)
5 4222485M1 2 Screw (1)
Replace and repair. Old not interchangeable with new 3637029M1
6 3637030M1 2 Nut (1)
7 4222821M1 2 Sleeve (1)
8 4223499M91 4 Kit, Piston Replace and repair. Old not interchangeable with new 3641254M91
9 1 Pin (7)
Not serviced,order REF.7
10 376131X1 2 Clip (7)
11 1 Piston (7)
Not serviced,order REF.7
12 3641031M91 1 Kit, Crankshaft
13 736950M91 1 Kit, Bearing [A]
(12)
736951M91 X Kit, Bearing [A]
Thickness (-) 0.25MM
736952M91 X Kit, Bearing [A]
Thickness (-) 0.50MM
736953M91 X Kit, Bearing [A]
Thickness (-) 0.75MM
14 747128M1 2 Thrust Washer (12)
735742M1 X Washer Thickness (+) 0.19MM
15 1 Crankshaft (12)
Not serviced,order REF.12
16 735168M91 1 Kit, Bearing [A]
(12)
735169M91 X Kit, Bearing [A]
Thickness (-) 0.25MM
735170M91 X Kit, Bearing [A]
Thickness (-) 0.50MM
735171M91 X Kit, Bearing [A]
Thickness (-) 0.75MM
17 747129M1 2 Thrust Washer (12)
735743M1 X Washer Thickness (+) 0.19MM
18 3638115M1 1 Thrust Block (12)
19 3638113M1 3 Screw (12)
20 734749M1 1 Gear
21 2196X 1 Key
22 747631M1 1 Pulley,Crank
23 4222053M91 4 Kit, Piston Ring
FOOTNOTE [A] PRE-FINISHED

11. MF 6120 TRACTOR - 1637273
1-0566-610-A
9
1911
8
7 20
10
6 16
145
12 21
13
1
17
2
18
43 15
Ref 05661610-1 Page 010-0060

12. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Cylinder Head - 4.41 Engine Page010-0060
Item Part Number Qty Description Comments
1 4222278M91 1 Cylinder Head Replace and repair. Old not interchangeable with new 4222075M91
2 731354M1 1 Plug (1)
3 748413M1 4 Valve Inlet (1)
4 748309M1 4 Valve Exhaust (1)
5 733824M1 8 Washer (1)
6 3637057M1 8 Spring (1)
7 3637041M1 8 Seal (1)
8 3637058M1 8 Cap (1)
9 736453M1 16 Cotter [A]
(1)
10 745662M1 8 Screw
11 745663M1 12 Screw
12 1476243X1 2 Screw
13 4223073M1 4 Guide (1)
Replace and repair. Old not interchangeable with new 3640676M1
14 4223074M1 4 Guide (1)
Replace and repair. Old not interchangeable with new 748420M1
15 733536M1 4 Plug (1)
16 4224584M1 4 Plug (1)
Replace and repair. Old interchangeable with new 1476192X1
17 3637050M1 1 Plate
18 3637051M1 2 Screw
19 3638411M1 1 Plate
20 3637051M1 2 Screw
21 3637139M1 2 Screw
FOOTNOTE [A] SERVICED IN PAIRS

13. MF 6120 TRACTOR - 1637273
1-0569-610-B
1
12
1717
10
10
23 16
7
7
7
7
4
4
4
4
5
5
5
5
11
9
9
22
2
21
3
206
14
13
8
19
15
18
Ref 05691610-1 Page 010-0065

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15. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Rocker Shaft - 4.41 Engine Page010-0065
Item Part Number Qty Description Comments
1 3641234M91 1 Rocker Shaft Ass
2 3637395M91 1 Rocker Shaft (1)
3 731330M1 2 Plug (2)
4 3638403M1 4 Bracket (1)
5 4223075M91 4 Rocker (1)
Right Hand
Replace and repair. Old not interchangeable with new 3641306M91
6 895748M1 1 Bush
7 4223076M91 4 Rocker (1)
Left Hand
Replace and repair. Old not interchangeable with new 3641247M1
8 895748M1 1 Bush
9 733811M1 2 Spring (1)
10 733812M1 2 Spring (1)
11 3638499M1 1 Connection (1)
12 3638500M1 1 Screw (1)
13 376137X1 2 Circlip (1)
14 747876M1 2 Washer (1)
15 3637066M1 3 Stud
16 3637067M1 3 Nut
17 739513M91 2 Shim (1)
18 4222069M1 8 Tappet Replace and repair. Old not interchangeable with new 740671M1
19 733817M1 8 Rod
20 376525X1 1 Olive (1)
21 4223933M1 8 Screw (1)
22 376123X1 8 Nut (1)
23 3637073M1 1 Screw

16. MF 6120 TRACTOR - 1637273
1-0305-609-B
7
5
6
4
3
121 2
10
13 11
8
9
Ref 03051609-1 Page 010-0070

17. Massey Ferguson
6120 TRACTOR - 1637273 1637273
Air Induction And Exhaust System - 4.41 Engine Page010-0070
Item Part Number Qty Description Comments
1 3641768M1 1 Ind.Manifold
2 3638735M1 1 Joint
3 3638736M1 1 Joint
4 3638737M1 1 Joint
5 1476293X1 2 Screw
6 3641769M1 3 Screw
7 1476292X1 1 Screw
8 3641785M1 1 Exhaust Manifold
9 3640556M1 2 Joint
10 3641786M1 2 Stud
11 3641787M1 2 Stud
12 3637108M1 4 Nut
13 4222720M1 3 Stud Replace and repair. Old not interchangeable with new 3637111M1

18. MF 6120 TRACTOR - 1637273
1-0572-610-A
10
2
11
1
3
12
14
13
5
16
15
7
19
4
6
8
209
21
25
26
27
17
18
23
22
24
Ref 05721610-1 Page 010-0075