VALVE GP-CONTROL 1914012 - Caterpillar

End play (clearance) of the idler shaft:(minimum) ... 0.25 mm (.010 in)(maximum) ... 0.85 mm (.033 in)(1) Clearance across the diameter between shaft and bearings (new) ... 0.366 0.11 mm (.014 .004 in)(2) Diameter of idler tread (new) for LGP undercarriage and front idler on standard and XL undercarriage ... 500 0.5 mm (19.7 .02 in) Idler tread diameter at 100 % worn ... 482 mm (19.0 in)Diameter of idler tread (new) for rear idler on standard and XL undercarriage ... 475 0.5 mm (18.7 .02 in)Idler tread diameter at 100 % worn ... 457 mm (18 in)(3) Torque for bolts ... 55 10 N m (40 7 lb ft)(4) Torque for bolts that hold idler to track roller frame ... 270 40 N m (200 30 lb ft)(5) Bearing depth from end of idler ... 20.0 0.5 mm (.79 .02 in) Rubber toric seals and all surface in contact with them must be clean and dry at assembly. Put a thin layer of oil on the surfaces of the metal seals that are in contact just before installation. Seal rings must be assembled square with the bore and toric must not be bulged or twisted. Put lubricant on all other seals at assembly.