BRACKET-SUPPORT 3440366 - Caterpillar

Typical Vane Pump Group and Pump Drive View A: Vane Pump Group(B) Dimension. (1) 3L-1425 Bearing-Ball. (2) 5P-0904 Seal-Lip Type. (3) 6V-2318 Seal-Lip Type. (4) 143-9721 Shaft-Pump.View C: Pump Drive. (D) Greater than Dimension B.(5) 144-0214 Gear-Drive. (6) 3T-4362 Cover-Torque Converter. Procedure 1. Checking Clearance Between Shaft Shoulder And Drive Gear.
Check clearance between the shoulder of the pump shaft and the drive gear in one of two ways.
1. Using "Plastigage" between the pump mounting face and the mounting face of the torque converter cover, assemble pump to cover (6). "Plastigage" is available from automotive supply houses.2. Using a depth gauge, measure from the mounting face for the pump on the torque converter cover (6) to the end of the drive gear (5). (Dimension D). Dimension D should be greater than Dimension B. If either method above shows interference between the pump shaft shoulder and the drive gear, any one of the following four solutions will assure clearance.1. Remove approximately 3.0 mm (.12 in) from the end of the pump drive gear (5).2. Replace former 105-0229 Gear-Drive with new 144-0214 Gear-Drive (5).3. Replace former 110-8478 Vane Pump Group with new 143-9722 Vane Pump Group.4. Replace former 6E-1241 Shaft-Pump with new 143-9721 Shaft-Pump. If pump shaft (4) or shaft bearing (1) has failed, install new 143-9721 Shaft-Pump (4), 3L-1425 Bearing-Ball (1), 5P-0904 Seal-Lip Type (2), and 6V-2318 Seal-Lip Type (3).For machines using the 4Z-6297 Pump Group and fire resistant fluid (water glycol), install new 143-9721 Shaft-Pump (4), 3L-1425 Bearing-Ball (1), 7X-4750 Seal-Lip Type (2), and 7X-4751 Seal-Lip Type (3).
Procedure 2. Checking Alignment Of Vane Pump Group With Torque Converter Cover.
1. To determine pump failure caused by misalignment, mount a dial indicator on the end of the drive gear (5) for the pump. (A magnetic base is needed).2. Place indicator in contact with the pump pilot bore in torque convertor cover (6).3. Bar the engine over and check indicator dial during one full revolution of pump drive gear (5). If the total indicator reading (TIR) is more than 0.305 mm (.0120 in), replace 3T-4362 Cover-Torque Convertor (6). If pump shaft (4) or shaft bearing (1) has failed, install new 143-9721 Shaft-Pump (4), 3L-1425 Bearing-Ball (1), 5P-0904 Seal-Lip Type (2), and 6V-2318 Seal-Lip Type (3).For machines using the 4Z-6297 Pump Group and fire resistant fluid (water glycol) install new 143-9722 Shaft-Pump (4), 3L-1425 Bearing-Ball (1), 7X-4750 Seal-Lip Type (2), and 7X-4751 Seal-Lip Type (3).