SEAL 1982820 - Caterpillar

Illustration 1 g00819698
Typical example
(1) Dowel pinsThe dowel pins in the cylinder block hold the cylinder head gasket in the correct position when the cylinder head is installed. (2) Cylinder head gasket
Table 1
Selection of Head Gasket for the C1.1 Engine
Piston Height above Top Face of Cylinder Block Gasket Thickness
0.55 mm to 0.64 mm (0.0217 in to 0.0252 in) 1.2 mm (0.047 in)
0.65 mm to 0.75 mm (0.0256 in to 0.0295 in) 1.3 mm (0.051 in)
Table 2
Selection of Head Gasket for the C1.5 Engines
Piston Height above Top Face of Cylinder Block Gasket Thickness
0.60 mm to 0.69 mm (0.0236 in to 0.0272 in) 1.3 mm (0.051 in)
0.70 mm to 0.79 mm (0.0276 in to 0.0311 in) 1.4 mm (0.055 in)
Table 3
Selection of Head Gasket for the C2.2 Engine
Piston Height above Top Face of Cylinder Block Gasket Thickness
+0.35 mm to +0.50 mm (+0.0138 in to +0.020 in) 1.2 mm (0.047 in)
+0.5 mm to + 0.6 mm (+0.020 in to + 0.024 in) 1.3 mm (+0.051 in) (3) The stamped marking on the cylinder head gasket must face upward. This ensures that the cylinder head gasket is installed correctly.Tightening Procedure for the Cylinder Head
Type One Cylinder Head Bolts
Illustration 2 g06221869
Type One Cylinder Head Bolts
Illustration 3 g01317351
The tightening sequence for a three cylinder engine
Illustration 4 g01309552
The tightening sequence for a four cylinder engine
Use the following procedure 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 4 or Illustration 2.Torque for boltsC1.1 ... 51 N m (37.6 lb ft)C1.5 and C2.2 engines ... 101 N m (74.5 lb ft)
Repeat the procedure in step 1 to ensure that all the bolts are tightened to the correct torque.Type Two Cylinder Head Bolts
Illustration 5 g06220283
Type Two cylinder head bolts
Illustration 6 g06221839
The tightening sequence for a three cylinder engine
Illustration 7 g06221890
The tightening sequence for a four cylinder engine
Use the following procedure 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 6 or Illustration 7.Torque for boltsC1.5 and C2.2 engines ... 50 N m (37 lb ft)C1.5 and C2.2 engines ... 150 degrees
Repeat the procedure in step 1 to ensure that all the bolts are tightened to the correct torque.Measuring the Distortion of the Cylinder Head
Illustration 8 g00900977
Typical example
Distortion of the cylinder head ... 0.00 to 0.05 mm (0.000 to 0.002 inch)Maximum service limit ... 0.12 mm (0.005 inch)Maximum limit for regrinding ... 0.15 mm (0.006 inch)Note: Use a straight edge and a feeler gauge to check the six positions for distortion.Refer to Systems Operation, Testing and Adjusting, "Cylinder Head - Inspect" for the procedures for measuring the cylinder head.Note: If the cylinder head has been machined, check the valve depth below the cylinder head face. Refer to Specifications, "Cylinder Head Valves" for valve depth.