BOSS 6K6390 - Caterpillar

REMOVE AND INSTALL CAMSHAFT BEARINGS
start by:a) remove camshafts1. Install tooling (A) as follows:a) Install the cam bearing pilot in the camshaft bearing.b) Put the backup plate in position so the bearing is between the parts.c) Install the bolt to hold the tooling together. Tooling (D) is used in place of tooling (B) and (C) to remove and install the camshaft bearings when the flywheel and front drive housings have been removed from the cylinder block.2. Install tool (B) on the flywheel housing as shown or install tooling (B) and (C) on the front drive housing. Tooling (C) must be used behind the bolt holes for clearance to install tool (B) on the front drive housing.3. Use tooling (E) as needed to get the correct length. Connect the extensions to the stud on tooling (A). The threaded shaft, thrust bearing assembly and nut (all parts of 8S2241 Tool Group) can be used with an 8H684 Ratchet Box Wrench in place of tooling (F) if a hydraulic puller is not available.4. Connect tooling (F) to extensions of tool group (E) and pull the bearing from its bore in the cylinder block. When the bearings are installed in the bore of the block, the bearing joint must be on the horizontal centerline of the bore and the upper oil hole of the bearing toward the vee of the block. The upper bearing oil hole must be put 20° 5° above the horizontal centerline of the bore in the block and the location of the lower (outside or outboard) bearing oil hole will be (and must be) 20° 5° below the horizontal centerline of the bearing bore as shown. Also, the bearing joint of the right side bearings must be toward the vee of the block and the left side bearings must be toward the outside of the block.5. Install the camshaft bearings as follows:a) Install camshaft bearing (1) on tooling (A) as shown and put unit (2) in position in the bearing bore.b) Follow Steps 2, 3 and 4 to install the tooling and pull the bearing into the center of its bore.c) Check the bore in bearing (1) after it is installed. The bore must be 86.00 0.06 mm (3.386 .002 in).a) install camshafts REMOVE CRANKSHAFT
start by:a) remove rocker shafts and push rodsb) remove front drive housingc) remove front balancer group (3508)d) remove rear gear group (Step 1 only)e) remove piston cooling jets
CAUTION The rocker shafts and push rods do not have to be removed to remove the crankshaft but bent push rods can be the result if they are not removed.
1. Put the engine in the position shown. The weight of the 3512 Engine is approximately 5443 kg (12,000 lb). The weight of the 3508 Engine is approximately 4445 kg (9800 lb).2. Remove counterweights (1) from the crankshaft.3. Remove bearing caps (2) from the connecting rod and push the