KIT-ENGINE OVERHAUL 3495917 - Caterpillar

3054 and 3054B Engine
Illustration 1 g00295370
Use the following procedure in order to tighten the bolts for the cylinder head:
Put clean engine oil on the threads of bolts. The bolts are tightened in the numerical sequence that is shown in Illustration 1.Torque for bolts ... 110 N m (81 lb ft)
Repeat the procedure in Step 1 to ensure that all of the bolts are tightened to the correct torque.Torque for bolts ... 110 N m (81 lb ft)
Use the numerical sequence that is shown in Illustration 1 to tighten the bolts for the additional torque-turn specification.
Tighten the short bolts (S) for an additional 150 degrees (2.5 flats).
Tighten the medium sized bolts (M) for an additional 180 degrees (3.0 flats).
Tighten the long bolts (L) for an additional 210 degrees (3.5 flats).Cylinder head thickness ... 102.79 to 103.59 mm (4.047 to 4.078 inch)Minimum permissible thickness after the cylinder head face has been resurfaced. ... 102.48 mm (4.035 inch)Maximum permissible projection of the fuel injection nozzle below the face of the cylinder head after resurfacing ... 4.45 mm (0.175 inch)
Illustration 2 g00295372
Maximum distortion of the cylinder head is given in the following table.
Table 1
Dimension     Maximum Permissible Distortion    
Width "A"    
0.08 mm (0.003 inch)    
Length "B"    
0.15 mm (0.006 inch)    
Diagonal "C"    
0.15 mm (0.006 inch)     3056 Engine
Illustration 3 g00568739
Use the following procedure in order to tighten the bolts for the cylinder head:
Put clean engine oil on the threads of the bolts. The bolts are tightened in the numerical sequence that is shown in Illustration 3.Tighten the bolts to the following torque. ... 110 N m (80 lb ft)
Repeat the procedure in Step 1 to ensure that all of the bolts are tightened to the correct torque.
Use the numerical sequence that is shown in Illustration 3 to tighten the bolts for the additional torque-turn specification.
Tighten the short bolts (S) for an additional 150 degrees (2.5 flats).
Tighten the medium sized bolts (M) for an additional 180 degrees (3.0 flats).
Tighten the long bolts (L) for an additional 210 degrees (3.5 flats).Cylinder head thickness ... 102.79 to 103.59 mm (4.047 to 4.078 inch)Minimum permissible thickness after the cylinder head face has been resurfaced. ... 102.48 mm (4.035 inch)Maximum permissible projection of the fuel injection nozzle below the face of the cylinder head after resurfacing ... 4.82 mm (0.1897 inch)
Illustration 4 g00295372
Maximum distortion of the cylinder head is given in the following table.
Table 2
Dimension     Maximum Permissible Distortion    
Width "A"    
0.13 mm (0.005 inch)    
Length "B"    
0.25 mm (0.009 inch)    
Diagonal "C"    
0.25 mm (0.009 inch)