2004/08/16 Caterpillar

Multi Terrain Loader:

247 (S/N: CML1-UP)

257 (S/N: CMM1-UP)

267 (S/N: CMP1-UP)

277 (S/N: CNC1-UP)

287 (S/N: CNY1-UP)

Skid Steer Loader:

216 (S/N: 4NZ1-3399)

226 (S/N: 5FZ1-UP)

228 (S/N: 6BZ1-UP)

236 (S/N: 4YZ1-UP)

242 (S/N: CMB1-UP)

246 (S/N: 5SZ1-UP)

248 (S/N: 6LZ1-UP)

252 (S/N: FDG1-UP)

262 (S/N: CED1-UP)

Service Magazine SEPD0738, 14 June 2004, "The Improved Pump Drive Flange and the Improved Coupling Hub Are Adaptable to "A-Series" Machines with 3034 Engines". Disregard this article. See the information that is provided below.

The improved 226-7635 Flange and the improved 226-7636 Coupling Hub, which are used on "B-Series" machines with 3044 engines, are adaptable to the listed "A-Series" machines with 3034 engines.

The pump drive flange and the coupling hub for the hydrostatic pump were redesigned upon the introduction of "B-Series" machines in order to provide improved service. The outside diameter of the 226-7636 Coupling Hub and the inside diameter of the 226-7635 Flange were increased for better tooth engagement and for better load distribution. The hub's design was also changed for improved clamping and retention.

The 226-7635 Flange and the 226-7636 Coupling Hub must be installed together as a pair. See Illustration 1.

Note: 9S-3263 Thread Lock Compound must be applied to the hub's 6V-8200 Bolt upon installation.

The 226-7635 Flange and the 226-7636 Coupling Hub are available through the parts system.

Illustration 1	g01081298
View of the hydrostatic pump and mounting (1) 226-7635 Flange (2) 226-7636 Coupling Hub