2006/11/20 Caterpillar

Track Feller Buncher:

1090 (S/N: BZJ1-206)

1190 (S/N: BZK1-2161)

1190T (S/N: BZL1-2210)

1290T (S/N: BZM1-10205)

1390 (S/N: B3F1-205)

511 (S/N: 5111-286)

521 (S/N: 5211-314)

522 (S/N: 5221-244)

532 (S/N: 5321-176)

541 (S/N: 5411-210)

551 (S/N: 5511-116)

552 (S/N: 5521-145)

TK711 (S/N: 1011-276)

TK721 (S/N: 1021-367)

TK722 (S/N: 1031-467)

TK732 (S/N: 1041-549)

TK741 (S/N: 2021-233)

TK751 (S/N: 3011-261)

TK752 (S/N: 3021-425)

Note: The graphic has been replaced for this article.

Application software for 500 series Track Feller Bunchers and TK700 series Track Feller Bunchers has been updated. The updated software will prevent "zero point" errors and "reposition lockout lever" errors on machines that are equipped with the following joystick controls:

• 235-5727 Joystick Control Gp

• 272-7087 Joystick Control Gp

• 272-7088 Joystick Control Gp

• 272-7089 Joystick Control Gp

• 283-2393 Joystick Control Gp

• 283-2394 Joystick Control Gp

• 283-2395 Joystick Control Gp

These errors may occur when the joystick is physically centered in the neutral position. Refer to Table 1 and Table 2 for the part number of the updated software for your machine.

Illustration 1	g01343828

When you send the application software to the IQAN system, ensure that the program is using the values from the new application software. Refer to Illustration 1.