Caution: To get maximum brake operating efficiency and to prevent engine damage, it is important to follow
the instructions on the following pages.
If the engine is equipped with a C-Brake, use the following adjustment procedure.
NOTE: C-Brake adjustment specifications are found on the C-Brake dataplate located on the exhaust side of the CBrake housing.
Slave piston adjustment must be made with the engine stopped and cold (stabilized water temperature or 60°C
[140°F] or below). The exhaust valves on the cylinder which are to be adjusted must be in the closed position.
Rotate the crankshaft in the direction of engine rotation.
Align the ‘‘A’’ mark on the accessory drive pulley with the pointer on the gear cover.
When the ‘‘A’’ mark is aligned, the intake and exhaust valves rocker levers must be loose for cylinder No. 5.
NOTE: Both the intake and exhaust valves are closed when both rocker levers are loose and can be moved from side to side. If both valves are not closed, rotate the accessory drive one complete revolution; and align the ‘‘A’’ mark with the pointer again.
The instructions using the ‘‘A’’ mark to begin the adjustments are for illustration purposes. Adjustments can start
at any of the cylinders as shown.
Caution: Use of the wrong adjusting screw can result in severe engine damage. See the latest N14 parts publication
information.
Loosen the lock nut for the No. 5 slave piston adjusting screw.
Install a dial indicator, Part No. 3375006, over the No. 5 slave piston adjusting screw. Use the adapter, Part No.
3823826, to mount the dial indicator fixture to the C-Brake.
Tighten the adjusting screw until the slave piston contacts the crosshead.
Zero the gauge with the dial indicator stem resting on the adjusting screw.
Loosen the adjusting screw until the indicator needle shows 0.58 mm [0.023-inch].
NOTE: C-Brake adjustment specifications are found on the C-Brake dataplate located on the exhaust side of the CBrake housing.
Use the torque wrench adapter, Part No. ST-669, and a 1/4-inch eight point socket to tighten the lock nut.
Torque Value: 24 N•m [18 ft-lb]
Repeat this procedure to adjust the remaining slave pistons.
