PUMP GP-GR 2 BSC 20R8015 - Caterpillar

Start By:a. remove engine and transmission It is not necessary to make a separation of the transmission and engine as shown in the illustrations. 1. Remove cover (1) from the transmission. 2. Remove sleeve (2) from the manifold and transmission case. Remove the O-ring seals from the sleeve. 3. Remove bolts (3) and (4) that hold the transmission hydraulic control valves to the clutch housing. 4. Install tooling (A) as shown and fasten a hoist. Remove transmission hydraulic control valves (5). The weight is 34 kg (75 lb.). The following steps are for installation of the transmission hydraulic control valves.5. Install tooling (A) and a hoist to the transmission hydraulic control valves. Put transmission hydraulic control valves (5) in position in the transmission, on the clutch housing.6. Install bolts (3) and (4) that hold the transmission hydraulic control valves to the clutch housing. Tighten the bolts to a torque of 48 4 N m (35 3 lb.ft.).7. Inspect O-ring seals for damage and make a replacement if needed. Install O-ring seals on sleeve (2). Install sleeve (2).8. Put the gasket in position and install cover (1) on the transmission.End By:a. install engine and transmission.Disassemble Transmission Hydraulic Control Valves (3F/3R Power Shift)
Start By:a. remove transmission hydraulic control valves 1. Remove manifold (1) from the selector and pressure control valve body. Remove the two O-ring seals. 2. Remove bolts (2) and remove upper manifold (3). 3. Remove selector and pressure control valve body (4) from the bottom plate. 4. Remove cover (5) from valve body (4). Remove the O-ring seals from cover (5). 5. Remove spring (7) and valve spool (6) from valve body (4).
Ring (8) holds the springs under compression.
6. Remove ring (8), retainer (9) and two springs from valve spool (6). 7. Remove piston (13), shims (12), spring (11) and spring (10) from the valve body. 8. Remove valve spool (14) and slug (15) from the valve body. 9. Remove snap ring (19), washer (18), spring (17) and valve (16) from valve spool (14).
Pin (20) holds spring (23) under compression.
10. Remove pin (20) with a punch and a hammer, and remove valve spool (21), slug (22) and spring (23) from the valve body. 11. Remove detent assemblies (24) from the top and bottom of the valve body for valve spool (25). 12. Remove O-ring seals (26) from detent assemblies (24). 13. Use a hammer and punch to remove pin (28) that holds stop (27) in place. Remove stop (27) and valve spool (25) from the valve body. 14. Remove detent assemblies (29) from the top and bottom of the valve body for valve spool (30). 15. Remove O-ring seals (31) from detent assemblies (29). 16. Use a hammer and punch to remove pin (33) that holds stop (32) in place. Remove stop (32) and valve spool (30) from the valve body. 17. Remove orifice screen (34) from the valve body. 18. Remove O-ring seal (35) from orifice screen (34). 19. Remove plate (36) from bottom manifold