2006/08/14 Caterpillar


Grinding the Mount for the Hood Tilt Cylinder May Improve Service Life {5104, 7251}

Usage:

TK711 101
Track Feller Buncher:
511 (S/N: 511265-274)
521 (S/N: 521295-299)
522 (S/N: 522235-236)
532 (S/N: 532175-176)
TK711 (S/N: 101196-276)
TK721 (S/N: 102196-367)
TK722 (S/N: 103197-467)
TK732 (S/N: 104191-549)
1190 (S/N: BZK1220-1220)
1190T (S/N: BZL1320-1321)

Grinding the mount for the hood tilt cylinder may improve service life of the hood tilt cylinder. It is possible that the clevis of the cylinder may catch on the mount as the cylinder rotates on the pin. This interference may cause the cylinder rod to bend when the rod is fully extended.




Illustration 1g01296036

Mount for Hood Tilt Cylinder before grinding

(A) 72 mm (2.835 inch)

(B) 42 mm (1.654 inch)

(C) 35 mm (1.378 inch)

(D) 70 mm (2.756 inch)

(E) 25.8 mm (1.016 inch) diameter

(F) 20 mm (0.787 inch) radius

(G) 3.5 mm (0.138 inch)




Illustration 2g01296037

Mount for Hood Tilt Cylinder after grinding

(H) 6 mm (0.236 inch)

Grind the mount for the cylinder in order to create more clearance. Refer to Illustration 1 and Illustration 2. Grind the mount until there is no interference throughout the complete cycle of the cylinder.

If the hood tilt cylinder is damaged, replace the cylinder with the 251-8281 Hood Tilt Cylinder.

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