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| Illustration 1 | g00720280 |
End play (clearance) of the idler shaft:
- Minimum ... 0.38 mm (0.015 inch)
- Maximum ... 1.24 mm (0.049 inch)
(1) Dimension for installing the stopper below the chamfer ... 7 ± 7 mm (0.2756 ± 0.2756 inch)
(2) Dimension of plug above the surface of the stopper ... 0 to 5 mm (0 to 0.197 inch)
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) Idler tread for the STD machine and for the LGP machine
- Original tread depth of the 159-2086 Track Idler ... 20 mm (0.79 inch)
- Depth gauge measurement of the idler at 100 percent worn tread ... 35.5 mm (1.40 inch)
(5) Idler tread for the XR machine
- Original tread depth of the 161-5792 Track Idler ... 20 mm (0.79 inch)
- Depth gauge measurement of the idler at 100 percent worn tread ... 32.5 mm (1.28 inch)
(6) Dimension for the extension of the shaft from the collar on both sides ... 51.42 ± 0.13 mm (2.0244 ± 0.0051 inch)
(7) Torque for four bolts that hold the track idler to the track roller frame ... 750 ± 90 N·m (550 ± 60 lb ft)
Note: Tighten the bolt on the abutment side of the idler cap first. Then, tighten the other bolt in the cap.
(8) Bearing depth from the face of the idler on each side ... 13.0 ± 0.5 mm (0.512 ± 0.020 inch)
(9) Torque for 24 bolts ... 85 ± 15 N·m (63 ± 11 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.