SEAL-LIP TYPE 7I8170 - Caterpillar

Rubber toric seals and all surfaces 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. Put lubricant on all other seals at assembly.(1) 7P1675 Spring (943): Length after installation ... 620 mm (24.4 in.)Force of spring after installation ... 69 500 5560 N (15,630 1243 lb.)Free length ... 771.5 mm (30.37 in.)(1) 3P4434 Spring (953): Length after installation ... 670 mm (26.4 in.)Force of spring after installation ... 80 100 6760 N (18,000 1520 lb.)Free length ... 845.8 mm (33.30 in.)(2) Torque for fill and relief valve ... 70 15 N m (50 10 lb. ft.)(3) Put 5P3931 Anti-Seize Compound on the locks. First torque for lock bolts (two for each idler shaft) ... 54 N m (40 lb.ft.)Then hit locks with a hammer and tighten bolts to ... 50 10 N m (70 10 lb.ft.)(4) Put 5P3931 Anti-Seize Compound on these surfaces.(5) Torque for support assembly (6) when installed into pilot (5) ... 130 20 N m (95 15 lb.ft.)(7) Torque for three bolts ... 135 15 N m (100 10 lb.ft.) (8) End play of shaft (new) ... 0.25 to 0.74 mm (.010 to .029 in.) End play of shaft (use again) ... 1.27 mm (.050 in.)Maximum amount the shaft can be bent ... 0.13 mm (.005 in.)(9) Torque for plug ... 170 20 N m (125 15 lb. ft.) The idler must be installed on the track roller frame so that plug (9) is toward the outside of the machine.(10) Clearance between shaft and bearing (minimum permissible) ... 0.20 mm (.008 in.) Clearance between shaft and bearing (use again) ... 1.27 mm (.050 in.)