992G Wheel Loader and 854G Wheel Dozer Braking System Parking Brake Caterpillar


Parking Brake
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Illustration 1g00100339

(1) The two bolts that are next to the notches in the housing are used to assemble the package. Torque for two bolts ... 270 ± 40 N·m (200 ± 30 lb ft)

(2) Torque for the 17 bolts ... 270 ± 40 N·m (200 ± 30 lb ft)




Illustration 2g01076434

View A-A

(3) 7S-3997 Spring

Length under test force ... 69.34 mm (2.730 inch)
Test force ... 3894 ± 312 N (875 ± 70 lb)
Free length after test ... 82.75 mm (3.258 inch)
Outside diameter ... 42.88 mm (1.688 inch)

(4) Thickness of seven new discs with six new plates

Thickness of the discs and the plates ... 74.61 ± 1.04 mm (2.937 ± .041 inch)
Minimum thickness of the worn plates and the worn discs ... 70.0 mm (2.76 inch)

(5) Seal the circular area with 6V-5765 RTV Silicone Sealant when you install the plates and the discs.

(6) Thickness of one new 1V-8279 Brake Disc Assembly ... 4.95 ± 0.08 mm (.195 ± .003 inch)

(7) Torque for the one bolt ... 105 ± 20 N·m (75 ± 15 lb ft)

(8) Lubricate the seal with the lubricant that is being sealed.

(9) Bore diameter in the housing for the parking brake release piston.

Bore diameter ... 57.163 ± 0.013 mm (2.2505 ± .0005 inch)
Outside diameter of the parking brake release piston ... 57.099 ± 0.013 mm (2.2480 ± .0005 inch)

(10) Thickness of one new 4E-7519 Plate ... 6.66 ± 0.08 mm (.262 ± .003 inch)