4N9442 CRANKSHAFT ASSEMBLY*R Engine Serial No. 48W1 To 2494, 2499, 2503, 2531, 2533, 2549, 2589, 2711, 2713 & 48W2716 Inclusive. Part Of 4N920 Crankshaft Group 637D

BASIC ENGINE

CRANKSHAFT GP

0. 4N-9442 KIT-CRANKS
1. 7N-3410 CRANKSHAFT
2. 7N-3407 CRANKSHAFT
3. 7W-6648 CRANKSHAFT
4. 1W-5010 CRANKSHAFT
5. 1W-5009 CRANKSHAFT
6. CRANKSHAFT

CAMSHAFT GP

7. 4N-0963 CAMSHAFT G
8. 4N-0963 CAMSHAFT G

PISTON & ROD GP

9. 4N-1994 PISTON & R
0. INFORMATION

WHEEL TRACTOR 637D WHEEL TRACTOR 26W
637D TRACTORS 26W00001-UP (MACHINE) POWERED BY 3408 ENGINE SEBP1058 637D 26W (1975)

BASIC ENGINE

CRANKSHAFT GP

4N-0920 CRANKSHAFT GROUP

4N-9442 KIT-CRANKSHAFT

7N-3410 CRANKSHAFT GP

7N-3407 CRANKSHAFT AS

7W-6648 CRANKSHAFT GP

1W-5010 CRANKSHAFT GP

1W-5009 CRANKSHAFT AS

CRANKSHAFT BEARING REPLACEMENTS

#SEBP10580020

4N-9442: KIT-CRANKSHAFT

KIT-CRANKSHAFT

4N9442 CRANKSHAFT ASSEMBLY*R
Engine Serial No. 48W1 To 2494, 2499, 2503, 2531, 2533, 2549, 2589, 2711, 2713
& 48W2716 Inclusive. Part Of 4N920 Crankshaft Group

c156201 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4N-0684	[1]	PIN
2.	4N-0848	[2]	SLEEVE
3.	9F-2247	[5]	PLUG
4.	7S-5005	[1]	DOWEL
5.	4N-0418	[1]	GEAR (80 teeth)

#SEBP10580021

7N-3410: CRANKSHAFT GP

CRANKSHAFT GP

7N3410 CRANKSHAFT GP
Engine S/N 48W2495-2498, 2500-2502, 2504-2530, 2532, 2534-2548,
2550-2588, 2590-2710, 2712, 2714, 2715 & 48W2717-19782
7N3407-Page 8A

c234686 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7N-3407 YR	[1]	CRANKSHAFT AS
2.	8N-5421 C	[5]	BEARING-MAIN
3.	1W-5252 C	[2]	PLATE-THRUST
4.	7N-1999 C	[2]	SEAL GP-CRANKSHAFT
	C		CHANGE FROM PREVIOUS TYPE
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION

#SEBP10580022

7N-3407: CRANKSHAFT AS

CRANKSHAFT AS

7N3407 CRANKSHAFT AS*R
Engine S/N 48W2495-2498, 2500-2502, 2504-2530, 2532, 2534-2548
2550-2588, 2590-2710, 2712, 2714, 2715 & 48W2717-19782
Part Of 7N3410 Crankshaft

c226141 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4N-0684	[1]	PIN-DOWEL
2.	7N-7591 C	[1]	GEAR-CRANKSHAFT (80 TEETH)
3.	9F-2247	[5]	PLUG
4.	7S-5005	[1]	DOWEL
	C		CHANGE FROM PREVIOUS TYPE

#SEBP10580023

7W-6648: CRANKSHAFT GP

CRANKSHAFT GP

7W6648 CRANKSHAFT GROUP
Engine Serial No. 48W19783 To 48W19874 Inclusive
1W5009-Page 8B

c329327 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1W-5009 RY	[1]	CRANKSHAFT AS
2.	4W-5492	[5]	BEARING-MAIN
3.	1W-5252	[2]	PLATE-THRUST
4.	2W-1733	[1]	SEAL GP-CRANKSHAFT
5.	7N-1999	[1]	SEAL GP-CRANKSHAFT
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION

#SEBP10580024

1W-5010: CRANKSHAFT GP

CRANKSHAFT GP

1W5010 CRANKSHAFT GROUP
Engine Serial No. 48W19875-Up
1W5009-Page 8B

c327769 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1W-5009 YR	[1]	CRANKSHAFT AS
2.	4W-5492	[5]	BEARING-MAIN
3.	1W-5252	[2]	PLATE-THRUST
4.	2W-1733 C	[1]	SEAL GP-CRANKSHAFT
5.	2W-1734 C	[1]	SEAL GP-CRANKSHAFT
	C		CHANGE FROM PREVIOUS TYPE
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION

#SEBP10580025

1W-5009: CRANKSHAFT AS

CRANKSHAFT AS

1W5009 CRANKSHAFT ASSEMBLY*R
Engine Serial No. 48W19783-Up.
Part Of 1W5010 & 7W6648 Crankshaft Groups

c312617 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4N-0684	[1]	PIN-DOWEL
2.	9F-2247	[5]	PLUG
3.	7S-5005	[1]	DOWEL
4.	7N-7591	[1]	GEAR-CRANKSHAFT (80 TEETH)

#SEBP10580026

CRANKSHAFT BEARING REPLACEMENTS

SEBP10580026 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#SEBP10580027

4N-0963: CAMSHAFT GP-SINGLE

CAMSHAFT GP-SINGLE

4N0963 CAMSHAFT GROUP
Engine Serial No. 48W1 To 48W17859 Inclusive

c312619 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1W-5058 C	[1]	CAMSHAFT AS.
2.	7N-8345	[1]	GEAR (86 TEETH)
3.	1B-8705	[1]	KEY
4.	4N-0955	[1]	PIN
5.	0S-0509	[2]	BOLT
6.	4N-0342	[1]	PLATE
	C		INDICATES CHANGE

#SEBP10580028

4N-0963: CAMSHAFT GP-SINGLE

CAMSHAFT GP-SINGLE

4N0963 CAMSHAFT GROUP
Engine Serial No. 48W17860-Up

c312637 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2W-7980 CR	[1]	CAMSHAFT AS
2.	2W-5288	[1]	GEAR-CAMSHAFT (86 TEETH)
3.	1B-8705	[1]	KEY-WOODRUFF
4.	4N-0955	[1]	PIN-DOWEL
5.	0S-0509	[2]	BOLT
6.	4N-0342	[1]	PLATE-CAMSHAFT THRUST
	C		CHANGE FROM PREVIOUS TYPE
	R		REMFG PART MAY BE AVAILABLE

#SEBP10580029

4N-1994: PISTON & ROD GP

PISTON & ROD GP

4N1994 CONNECTING ROD AND PISTON GROUP--8 REQUIRED
Engine Serial No. 48W1 To 48W3187 & 48W3207 To 48W3244 Inclusive

c222281 SEBP1058

For full view, you need register

Parts for your 637D WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7N-9807 C	[1]	PIN
2.	008-3214	[2]	RING
3.	4N-0390	[1]	ROD ASSEM.
			(Includes)
	7N-4332 C	[1]	BEARING
4.	6N-8942 C	[2]	BOLT
	8L-3441	[2]	NUT
5.	6N-7436	[1]	BEARING
	6N-4166 H	[1]	BEARING .025 in.(.64 mm) undersize
	6N-4167 H	[1]	BEARING .050 in.(1.27 mm) undersize
6.	6N-4127	[1]	PISTON GROUP
			(Includes)
7.	4N-5692	[1]	RING (oil)
8.	2P-2817	[1]	RING (intermediate)
9.	3N-0603	[1]	RING (top)
	4N-5619 H	[1]	RING GROUP
			(Consists of complete set of Rings for one Piston)
	C		INDICATES CHANGE
	H		NOT PART OF THIS GROUP