ALTERNATOR 5526994 - Caterpillar

1. Disconnect two oil hoses (1) and one oil line (2) from the track brake valve. 2. Remove the two bolts (4) that hold the track brake valve to the block.3. Remove track brake valve (3). The following steps are for the installation of the track brake valve.4. Put the track brake valve (3) in position on the block.5. Install the two bolts (4) that hold the valve to the block.6. Connect one oil line (2) and two oil hoses (1) to the track brake valve.Disassemble And Assemble Track Brake Valve
a. remove track brake valve1. Remove the cover (1) and stem (6).2. Remove plug (4), spring (3) and stem (2).3. Remove plug (5), plunger (10), spring (9), shims (8) and stop (7). Keep the shims together for assembly purposes. The following steps are for the assembly of the track brake valve. 4. Install the stop (7), shims (8), spring (9), plunger (10) and plug (5). Make sure the O-ring seals are in position on plunger (10) and plug (5). The shims (4) must be of correct thickness to cause the parking brake to release when the pilot system pressure is 1860 kPa (270 psi) or higher, and to engage when the pilot system pressure becomes 1655 kPa (240 psi) or lower. Check the adjustment of the valve as follows:a. Make sure plunger (10) is turned out of valve as far as possible.b. Push on one of the travel pedals, and check the operation of the parking brakes and the pressure in the pilot system.c. Make an adjustment to the thickness of shims (8) until the parking brakes engage and release at the correct pressures.2. Install the stem (6) and cover (1).3. Install stem (2), spring (3) and plug (4).End By:a. install track brake valve