SPRING 4T6074 - Caterpillar

1. Remove water line (5) for the air compressor and breather tube (3).2. Remove the bracket (1) for the belt tightener.3. Remove the glow plug wires (4) from each end of the cylinder head.4. Remove the bolts (2) that hold cylinder head to the cylinder block. Make sure the 3/8 inch bolts (6) are removed. 5. Fasten a hoist and remove the cylinder head (7) from the cylinder block. Weight is 300 lb. (136 kg).
Do not put the cylinder head down on a flat surface. This can cause damage to the fuel injection valves.
Always install a new gasket between spacer plate and cylinder block before cylinder head is installed. See REMOVE SPACER PLATE.Install Cylinder Head
1. Thoroughly clean the spacer plate and bottom surface of cylinder head. Install new head gasket and seals. Be sure a new gasket has been installed between spacer plate and cylinder block. See INSTALL SPACER PLATE. 2. Fasten a hoist and install cylinder head on engine.3. Put clean engine oil on threads of cylinder head bolts. Install cylinder head bolts and washers. Tighten bolts in following sequence: 1: Tighten bolts 1 through 20 in number sequence to 200 20 lb.ft. (27.7 2.8 mkg).2: Tighten bolts 1 through 20 in number sequence 330 15 lb.ft. (45.6 2.1 mkg).3: Tighten bolts 1 through 20 in number sequence to 330 15 lb.ft. (45.6 2.1 mkg) by hand.4: Install rocker shafts and push rods (1).5: Tighten bolts 21 through 26 in number sequence to 200 20 lb.ft. (27.7 2.8 mkg).6: Tighten bolts 21 through 26 in number sequence to 330 15 lb.ft. (45.6 2.1 mkg).7: Tighten bolts 21 through 26 in number sequence to 330 15 lb.ft. (45.6 2.1 mkg) by hand.8: Tighten the 3/8 in. bolts (2) to 32 5 lb.ft. (4.4 0.7 mkg). If studs (3) were removed, install new studs and tighten to 20 5 lb.ft. (2.8 0.7 mkg).4. Make adjustment of valves to have a clearance of .015 .003 in. (0.38 0.07 mm) for intake and .030 .003 in. (0.76 0.07 mm) for exhaust. Install valve cover housing and inner fuel lines.5. Install bracket for the belt tightener. Install water line for the air compressor and breather tube.end by:a) install exhaust manifoldb) install aftercoolerc) install fuel injection linesd) install water temperature regulator