UNIVERSAL JOINT GP 4E8172 - Caterpillar

Remove Rocker Shaft Assembly
Start By:a. remove valve covers FLUID SPILLAGE CONTAINMENT Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "TOOLS AND SHOP PRODUCT GUIDE, NENG2500", for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates. 1. Remove fuel line (2) with Tool (B). Put protective caps on all fuel openings.2. Make a separation between rocker arm (1) and the push rod with Tool (A). Put identification on each valve bridge as to its location. Remove valve bridges (3). 3. Disconnect fuel lines (4) from fuel line adapters (5). Remove locks (6). Remove adapters (5).4. Remove bolts (8) that hold the rocker shaft assembly (7) to the cylinder head. Remove rocker shaft assembly (7).Install Rocker Shaft Assembly
FLUID SPILLAGE CONTAINMENT Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "TOOLS AND SHOP PRODUCT GUIDE, NENG2500", for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates. 1. Put rocker shaft assembly (2) into position on the head.2. Put clean engine oil on the threads of bolts (1) and install the bolts to hold rocker shaft assembly. Tighten the bolts as follows: a. Tighten bolts 1 through 6 in number sequence shown to a torque of 270 25 N m (200 20 lb ft).b. Tighten bolts 1 through 6 in number sequence shown again to a torque of 447 20 N m (330 15 lb ft).c. Tighten bolts 1 through 6 in number sequence shown again to a torque of 447 30 N m (330 15 lb ft). 3. Put clean engine oil on the O-ring for adapter (5). Install adapters (5) and locks.4. Connect fuel lines (3) to adapters (5). Tighten fuel line nuts to 40 7 N m (30 5 lb ft) with Tool (B).5. Put clean engine oil on the valve bridge dowels. Install valve bridges (7) in their correct locations on the cylinder head. Adjustment of the bridge is necessary only if valve grinding or other reconditioning of the cylinder head has been done. See the topic "Bridge Adjustment" in the Systems Operation, Testing and Adjusting Manual for this procedure.6. Put clean engine oil on the valve bridges. Make connection between the rocker arms (4) and push rods with Tool (A).7. Make an adjustment of the valve to have a clearance of .038 mm (.015 in) for intake and 0.76 mm (.030 in) for exhaust. See the topic "Valve Clearance Setting" in the Systems Operation, Testing & Adjusting