RACE-BEARING-YM 4189607 - Caterpillar

Illustration 1 g00753716
End play (clearance) of the idler shaft: Minimum ... 0.25 mm (0.010 inch) Maximum ... 1.25 mm (0.033 inch) (1) Dimension for installing the stopper below the chamfer ... 0 to 5 mm (0 to 0.197 inch) (2) Dimension of plug above the surface of the stopper ... 7 7 mm (0.275 0.275)Note: The plug must not be recessed below the surface of the stopper. (3) Original clearance across the diameter between the shaft and the bearings ... 0.50 0.06 mm (0.020 0.002 inch) (4) Depth of the Idler tread Original tread depth of the track idler ... 20 mm (0.79 inch) Depth gauge measurement of the idler at 100 percent worn tread ... 30.0 mm (1.18 inch) (5) Dimension for the extension of the shaft from the collar on both sides ... 50.42 mm (1.99 inch) (6) Torque for four bolts that hold the track idler to the track roller frame ... 570 80 N m (420 59 lb ft)Note: Tighten the track idler cap bolt on the abutment side of the cap first. Then, tighten the other bolt in the cap. (7) Bearing depth from the end of the idler ... 20.0 0.5 mm (0.79 0.02 inch) (8) Torque for 24 bolts ... 55 10 N m (40 7 lb ft)Note: Rubber toric seals must be clean and dry at assembly. All surfaces that contact the toric seals must be clean and dry at assembly. At assembly, apply a thin film of oil to the contacting surfaces of the metal seal. Seal rings must be assembled squarely with the bore. The toric ring must not bulge and the toric ring must not be twisted. Refer to 6Y-0300 Installation Instructions for Conventional Duo-Cone Seal Assemblies.