IDLER GP-FRONT 3934075 - Caterpillar

Personal injury or death can result from sudden suspension cylinder movement.Sudden movement, up or down, can cause the clearance above your head to change rapidly.Read all warning labels on the suspension cylinders before servicing. Do not check the oil in the suspension cylinder until all the nitrogen pressure has been released.Do not, under any condition, remove valves, cover or plugs from the cylinder unless the rod is fully retracted and all the nitrogen pressure is released.Do not stand under the machine when testing or adjusting the suspension cylinders.
Illustration 1 g01265960Charging dimensions for a suspension cylinder which has been purged Charge with oil ... 25.4 mm (1.00 inch)Full charge of oil and nitrogen ... 130.5 6.5 mm (5.15 0.25 inch)Note: Use FT1680 Gauge Block in order to achieve the dimension for the full charge of oil and nitrogen. See Testing and Adjusting, "Suspension Cylinder (Rear) - Purge and Charge" for the charging procedure. (1) Apply a coat of 4C-5593 Anti-Seize Compound to the pin prior to assembly with the bearing. Outside diameter of 7D-3009 Pin ... 69.761 0.030 mm (2.7465 0.0012 inch)Inside diameter of 7J-3297 Bearing ... 69.825 to 69.850 mm (2.7490 to 2.7500 inch)
Illustration 2 g03874210 (2) Install the bearings so that the separation line (fracture plane) is aligned with the mark that is shown. The mark that is shown is the horizontal centerline of the bearing. (3) Torque for 5M-6707 Relief Valve ... 50 10 N m (37 7 lb ft) (A) Outside diameter of rod assembly ... 177.749 0.050 mm (6.9980 0.0020 inch) (5) Inside diameter of head over three lands ... 177.88 0.03 mm (7.003 0.001 inch) (6) Inside diameter of cylinder assembly ... 215.85 to 216.03 mm (8.498 to 8.505 inch) (7) Outside diameter of rod assembly over two lands ... 213.87 0.13 mm (8.420 0.005 inch)Lubricate the sealing lip with the lubricant that is being sealed.Note: Approximately 12.0 L (3.17 US gal) of SAE 10W oil with the current service classification is necessary in order to charge a cylinder.The charging medium for suspension cylinder is dry nitrogen.Internal volume ... 3.96 L (241.6540 in3)Charged pressure ... 1340 kPa (200 psi)Service pressure ... 7250 kPa (1050 psi)Bursting pressure ... 35140 kPa (5100 psi)Charged safety factor ratio ... 36:1Service safety factor ratio ... 4.3:1