Caterpillar® 637, 637B – Wheel Tractor-Scrapers

Serial number ranges

Tractor S/N: 65M1-UP,79P1-UP
Scraper S/N: 64M1-UP,91N1-UP,92N1-UP,26R1-UP

Application (Cylinder)	Caterpillar® Part No.	Description	Bore	Rod	Note / Serial No.
Steering	242-2554	Seal Kit	6.500"	2.500"	S/N: 65M1-275,79P1-264
	243-5797	Seal Kit	6.500"	2.500"	S/N: 65M276-UP,79P265-UP
Servo-Master	8T-1387	Seal Kit	1.500"	0.750"
Load	242-2558	Seal Kit	6.000"	2.500"	S/N: 65M1-502,79P1-653,79P661-661,79P664-664,79P682-682
	243-5797	Seal Kit	6.500"	2.500"	S/N: 65M503-UP,79P654-660,79P662-663,79P665-681,79P683-UP
Bail	240-8515	Seal Kit	3.500"	2.000"	S/N: 79P
Apron	244-2069	Seal Kit	8.250"	3.000"	S/N: 64M358-UP,91N451-UP,92N232-UP,26R
Bowl	243-5820	Seal Kit	7.250"	2.750"	S/N: 64M236-UP,91N230-UP,92N201-UP,26R
Ejector	8T-1415	Seal Kit	8.250"	6.000"	S/N: 64M541-UP,91N935-UP,92N277-UP,26R646-UP

For reference only. Send us your machine serial number before ordering and we will confirm the correct kit.

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Caterpillar®, Komatsu®, Volvo®, JCB® and other brand names are registered trademarks of their owners and are used only to indicate compatibility.