IT14G Integrated Toolcarrier and 914G Wheel Loader Braking System Caterpillar


Master Cylinder

Usage:

IT14G 1WN

104-5948 Master Cylinder on the Standard Machine




Illustration 1g00341582

Cross section of the master cylinder

(A) Brake boost. (B) Master cylinder.

Note: SAE 10W oil is used. The oil temperature is 48.9°C (120°F). The oil has a flow rate of 37.9 L/min (10 US gpm) .

(1) Relief valve pressure setting for the brake boost ... 1965 ± 70 kPa (285 ± 10 psi)

(2) Lightly coat the cup seal with brake oil.

(3) Apply 5P-3413 Pipe Sealant to the threads before assembling.

(4) Torque for the filler plug ... 37 ± 3 N·m (27 ± 2 lb ft)

(5) Torque for the end plug ... 88 ± 20 N·m (65 ± 15 lb ft)

(6) Apply 7M-7456 Compound to the threads prior to assembly. Torque for the retainer ... 18 ± 1 N·m (13 ± 1 lb ft)

(7) Torque for the three bolts ... 51 ± 3 N·m (38 ± 2.2 lb ft)

122-9727 Master Cylinder on the High Speed Machine




Illustration 2g00342636

Cross section of the master cylinder

(A) Brake boost. (B) Master cylinder.

(1) The relief valve pressure setting of the brake boost ... 1000 kPa (145 psi)

(2) Lightly coat the cup seal with the brake oil.

(3) Torque for the filler plug ... 37 ± 3 N·m (27.5 ± 2.5 lb ft)

(4) Apply 5P-3413 Pipe Sealant to the threads before assembling.

(5) Internal relief pressure setting for the master cylinder ... 930 kPa (135 psi)

(5) Torque for the end plug of the relief valve ... 108 ± 7 N·m (80 ± 5 lb ft)

(6) Torque for the bolt to the hydraulic line ... 54 ± 7 N·m (40 ± 5 lb ft)

(7) Torque for the end plug ... 88 ± 20 N·m (65 ± 15 lb ft)

(8) Torque for the retainer ... 18 ± 1 N·m (13 ± 1 lb ft)

(9) Torque for the three bolts ... 51 ± 3 N·m (37.5 ± 2.5 lb ft)

130-5521 Master Cylinder on the High Speed Machine

Note: Refer to Illustration 2 .

(1) The relief valve pressure setting for the brake boost ... 1000 kPa (145 psi)

(1) Torque for the end plug of the relief valve ... 47 ± 7 N·m (35 ± 5 lb ft)

(3) Torque for the filler plug ... 37 ± 3 N·m (27.5 ± 2.5 lb ft)

(4) Apply 5P-3413 Pipe Sealant to the threads before assembling.

(5) Relief pressure setting for the master cylinder ... 930 kPa (135 psi)

(5) Torque for the end plug of the relief valve ... 108 ± 7 N·m (80 ± 5 lb ft)

(6) Torque for the bolt to the hydraulic line ... 54 ± 7 N·m (40 ± 5 lb ft)

(7) Torque for the end plug ... 88 ± 20 N·m (65 ± 15 lb ft)

(9) Torque for the three bolts ... 51 ± 3 N·m (37.5 ± 2.5 lb ft)

(10) Torque for the end plug ... 135 ± 7 N·m (100 ± 5 lb ft)

143-8386 Master Cylinder on the High Speed Machine

Note: Refer to Illustration 2 .

(1) The relief pressure for the brake boost ... 1000 kPa (145 psi)

(1) Torque for the end plug of the relief valve ... 47 ± 7 N·m (35 ± 5 lb ft)

(3) Torque for the filler plug ... 37 ± 3 N·m (27.5 ± 2.5 lb ft)

(4) Apply 5P-3413 Pipe Sealant to the threads before assembling.

(5) Relief pressure setting for the master cylinder ... 930 kPa (135 psi)

(5) Torque for the end plug of the relief valve ... 108 ± 7 N·m (80 ± 5 lb ft)

(6) Torque for the bolt to the hydraulic line ... 54 ± 7 N·m (40 ± 5 lb ft)

(7) Torque for the end plug ... 88 ± 20 N·m (65 ± 15 lb ft)

(8) Torque for the retainer ... 18 ± 1 N·m (13 ± 1 lb ft)

(9) Torque for the three bolts ... 53 ± 3 N·m (39 ± 2.2 lb ft)

(10) Torque for the end plug ... 183 ± 7 N·m (135 ± 5 lb ft)

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