PISTON 6B3912 - Caterpillar

Illustration 1 g01370425
Front Wheel Gp
Illustration 2 g01370428
Rear Wheel Gp (1) Torque for purge screw ... 12 3 N m (105 25 lb in) (2) Torque for nut ... 65 10 N m (48 7 lb ft) (3) 284-8960 Washer Quantity ... Three Thickness of one shim ... 0.5 mm (0.02 inch) (4) 284-8959 Washer Quantity ... One Thickness of one shim ... 2.0 mm (0.08 inch)ReferenceFor additional information, refer to the Braking and Hydraulic Fan System Testing and Adjusting, "Service Brake - Test (16M)" for your machine for additional information concerning the installation of the shims and the compensator. (5) Lubricate the seal lightly with the lubricant that is being sealed prior to assembly. (6) 288-3883 Spring Quantity ... Four Test length ... 89.9 mm (3.54 inch) Test force ... 400 N (90 lb) Free length after test ... 114.2 mm (4.50 inch) Outside diameter ... 19 mm (0.75 inch) (7) Torque for four bolts ... 60 12 N m (45 9 lb ft) (8) 284-9557 Plate Number of plates ... 14 Thickness of one plate ... 1.91 0.064 mm (0.075 0.0025 inch) (9) 259-6836 Friction Disc Number of discs ... 13 Thickness of one disc ... 3.6 0.08 mm (0.142 0.003 inch) Minimum reusable thickness for one disk ... 3.43 mm (0.135 inch) (10) Torque for 28 bolts ... 270 40 N m (200 30 lb ft) (11) 270-6942 Shim Quantity ... Four Shim thickness ... 0.12 mm (0.005 inch) (12) 270-6943 Shim Quantity ... One Shim thickness ... 0.18 mm (0.007 inch) (13) 270-6944 Shim Quantity ... Four Shim thickness ... 0.5 mm (0.02 inch)ReferenceFor additional information regarding the installation of these shims, refer to the Disassembly and Assembly, "Service Brakes" manual for your machine. (14) Clean the mounting surface. Prior to assembling the wheel group and the tandem, apply 1U-8846 Gasket Sealant to the mounting surface. (15) The seals and all of the surfaces that are contacting the seals must be clean and dry at assembly. Apply a thin film of oil to the metal seal ring prior to assembly.