VALVE GP-RELIEF 1355489 - Caterpillar

Remove Cylinder Head Assemblies
Start By:a. remove exhaust manifolds The exhaust manifolds do not have to be removed unless all of the cylinder head assemblies are to be removed.1. Drain the coolant from the cooling system.2. Shut off the fuel supply to the engine. 3. Remove the bolts, and remove intake elbow (1) from the cylinder head assembly. 4. Disconnect fuel lines (2) and (4) from fuel manifold (3). Remove bolts (5), and remove fuel manifold (3).5. Remove the rocker shaft assemblies and push rods. See Remove Rocker Shaft Assemblies And Push Rods for this procedure. 6. Remove the bolts and cover (6) from under the cylinder head assembly to be removed. 7. Remove bolt (8) and cap (7) that hold the fuel control lever to the fuel control shaft. 8. Remove bolts (13) to remove lever assembly (9) and rod assembly (14) as a unit from the cylinder head assembly.9. If necessary, use tool (A) to turn the flywheel until the camshaft is moved in a position so rod assembly (14) can be removed between the engine block and camshaft.10. Remove bolt (10) and clamp (12) from fuel injector (11).
Do not put a force on the fuel injection rack or cause damage to it when the injectors are removed.
11. Use a pry bar to remove injector (11) from the cylinder head assembly. 12. Remove fuel lines (17), bracket (16) and elbows (15) from the cylinder head assembly.13. Remove bolts (18) and (20) to remove valve cover base (19) from the cylinder head assembly. 14. Use tooling (B) to fasten a hoist to cylinder head assembly (22). Remove bolts (21) and (23) to remove cylinder head assembly (22) from the engine. The weight of the cylinder head assembly is 45 kg (100 lb.).Install Cylinder Head Assemblies
1. Thoroughly clean the spacer plates and bottom surface of the cylinder head assemblies. Install a new spacer plate gasket, head gasket and seals. Do not use any adhesives. Before installation of the cylinder head assembly on a water cooled manifold, be sure there is not a plug at location (X). 2. Fasten a hoist and tooling (A) to the cylinder head assembly with two 3/8"-16 NC bolts and washers as shown. Put the cylinder head assembly into position on the spacer plate. 3. Put 5P3931 Anti-Seize Compound on the threads of the cylinder head bolts. Install the cylinder head bolts and washers. Tighten the bolts in the following sequence:a. Tighten all of the bolts to a torque of 30 5 N m (22 4 lb.ft.).b. Tighten bolts 1 through 8 in number sequence to a torque of 270 35 N m (200 26 lb.ft.).c. Tighten bolts 1 through 8 in number sequence to a torque of 450 20 N m (332 15 lb.ft.). 4. Install bolts (3) and the washers to hold the cylinder head assembly to the engine.5. Make sure the O-ring seals are installed around the two dowels in the bottom of valve cover base