BOOM & BEARING AS 1705484 - Caterpillar

1. Remove the bolts, joints and torque converter flange.2. Fasten a .375 in. (9.52 mm) diameter rod, 3 in. (76 mm) long, to the torque converter input shaft with a 1J9778 Hose Clamp. Install a 7H1948 Snug onto the rod. Assemble a 7H1942 Indicator (with a 7H1940 Universal Attachment), and 7H1945 Holding Rod into the 7H1948 Snug.3. Put the universal attachment on the outside diameter of the engine output flange. Rotate the indicator until it stops on "0". Turn the torque converter input shaft 360°. Make a record of the indicator measurement at each 90° of rotation.4. The total indicator reading through 360° of rotation must not be more than .080 in. (2.03 mm). To correct the alignment, loosen the engine rear bolts and move the engine from side to side. If the vertical alignment is not correct, install or remove shims under the engine rear supports.5. If the holes for the support bolts have become larger because of wear, dowels should be installed after the engine has been fastened down [See Step (8)].6. Remove the universal attachment. Put the face of the 7H1942 Indicator rod against the engine flange between the bolt holes and outside diameter of the flange. Turn the indicator to "0".7. Turn the torque converter input shaft 360°. Make a record of the indicator measurement at each 90° of rotation. The total indicator reading through 360° of rotation must not be more than .026 in. (0.66 mm). To correct the alignment, loosen the engine front support bolts and move the front of the engine from side to side.8. Check the vertical and horizontal alignment again. When the alignment is correct, tighten the engine mount bolts.Make a reference to ENGINE MOUNTING BOLTS (in the ENGINE SPECIFICATIONS Manual, Form SENR7590) for the correct torque for the bolts that hold the engine to the frame. If the alignment is off by a large amount, check for the cause. If the frame is bent, it can be straightened. If the engine front support is badly worn, a replacement is needed.