PIPE A.-OUTLET 8B3505 - Caterpillar

Table 1
Required Tools    
Part Number    Part Description    Qty    
8T-0853     Pressure Gauge (0 to 400 kPa (0 to 58 psi))     1    
8T-0857     Pressure Gauge (0 to 10,000 kPa (0 to 1,450 psi))     1    
6V-3989     Fitting (TEST)     1    
6V-4143     Quick Connect Coupler     2    
6V-3014     Hose As     1    
Illustration 1 g00842654
View of the Brake Control Valve Which is Located Under the Cab (1) Locknut (2) Rod adjuster (3) Brake control valve (4) Pressure tap (Brake)
Stop the engine.
Connect a 10000 kPa (1450 psi) pressure gauge to pressure tap (4) .
Start the engine.Note: The parking brake must be in the OFF position during the adjustment of the brake pressure.
Adjust the engine speed to HIGH IDLE by turning the engine speed dial to position 10.
Fully depress the service brake pedal until the service brake pedal locks mechanically.
Check the brake pressure at pressure tap (4). Refer to Testing and Adjusting, "Specifications" in this manual for the correct brake pressure.
If the brake pressure does not meet specifications, loosen locknut (1) and turn rod adjuster (2) until the correct pressure is achieved.Note: If the service brake pedal is released, adjusting the rod is easier.
Release the service brake. Stop the engine and disconnect the 10000 kPa (1450 psi) pressure gauge.
Connect a 400 kPa (58 psi) pressure gauge to pressure tap (4) .
Start the engine but do not depress the service brake pedal. The pressure should not exceed 20 kPa (2.9 psi).
If the brake residual pressure exceeds 20 kPa (2.9 psi), the stop screw must be lowered in order to decrease the brake pressure. The stop screw is located at the back of the service brake pedal on the bottom.
If it was necessary to adjust the residual brake pressure, repeat Step 5 and Step 7 in order to make sure that the brake pressure is adjusted properly.