ENGINE AR-COMPLETE 2640822 - Caterpillar

1. Mark and remove two hydraulic lines (1) and (2). Remove four bolts (3) and four nuts (4). Remove housing (5). 2. Loosen two locknuts (6) and remove two oil supply pistons (7). Remove plug (8) and centrifugal valve (9). Remove valve body (10) from shaft. 3. Remove centrifugal valve seat (13) from shaft. Remove retaining ring (14) and shims (12). Remove bearing carrier (11). The following steps are to install the down shift control valve.4. Install bearing carrier (11) with four nuts (4).5. Install shims (12) and retaining (14). Adjust end play between shims (12) and retaining ring (14) to a maximum of .20 mm (.008 in) by adding or subtracting shims.6. Install centrifugal valve seat (13) onto shaft. Use grease to hold it in place.7. Replace valve body (10). Be sure large collar of valve body is toward the transmission and differential.8. Install right side oil supply piston (7) first to insure alignment of the valve. Torque to maximum 15 N m (11 lb ft).9. Install left side oil supply piston (7) next to insure alignment of the valve. Torque to maximum 15 N m (11 lb ft).10. Install two locknuts (6). Torque to a maximum 28 N m (21 lb ft).11. Install centrifugal valve (9) and plug (8). Torque to maximum 46 N m (34 lb ft).12. Place housing on transmission and differential and install four bolts (3). Torque to a maximum of 49 N m (36 lb ft).13. Connect two hydraulic lines (1) and (2).End By:a. install transmission and differentialb. install drive motorc. install axleDisassemble And Assemble Down Shift Control Valve
Start By:a. remove down shift control valve 1. Remove retaining ring (1) and seal (2). Remove four hydraulic fittings (3). Check and replace O-ring seals if needed. 2. Remove plug (4), seal (5), bushing (6), piston (7), washer (8), keeper (9), washer (10), spring (11) and washer (12).3. Remove plug (13), seal (14), spring (15) and piston (16). The following steps are to assemble the down shift control valve.4. Install piston (16), spring (15), seal (14), and plug (13).5. Install washer (12), spring (11), washer (10), keeper (9), washer (8), piston (7), bushing (6), seal (5) and plug (4). 6. Install four hydraulic fittings (3). Install seal (2) with tool (A) and install retaining ring (1).End By:a. install down shift control valve