C2.4 Tier 4 Final Engines for Caterpillar Built Machines Cylinder Head Caterpillar


Cylinder Head
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C2.4 Tier 4 Final Engines for Caterpillar Built Machines [M0067750]
BASIC ENGINE
CYLINDER HEAD GP
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Cylinder Head Valves
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Cylinder Head
1.1. Top Clearance
2.1. Valve Springs


Illustration 1g02732098
C2.4

Note: Apply engine oil to the threads and seats of the cylinder head bolts before assembly.

Gradually tighten the bolts for the cylinder head, in the proper sequence from 1 to 18, to the following torque ... 95.65 ± 2.45 N·m (70.55 ± 1.75 lb ft)



Illustration 2g02807179

Cylinder head flatness allowable limit ... 0.05 mm (0.002 inch)

Top Clearance



Illustration 3g02839483
(1) Piston
(2) Fuse

  1. Remove the cylinder head.

  2. Move up the piston and attach a strip of fuse on the piston head at three positions with grease.

  3. Lower the piston and install the cylinder head.

    Note: Use a new cylinder head gasket and tighten the bolts to the proper torque.

  4. Turn the flywheel until the piston goes more than the top dead center.

  5. Remove the cylinder head and measure the thickness of the fuses.

  6. If the measurement is out of the factory specifications, examine the oil clearances between the crankpin and bearing. Also examine that between the piston pin and bushing.

    Note: After you examine the top clearance, make sure that you assemble the cylinder head with a new cylinder head gasket.

Table 1
Top clearance of cylinder head  0.60 to 0.70 mm
0.024 to 0.027 in. 

Valve Springs

Table 2
Specifications for Valve Springs 
Free Length (New)  41.7 to 42.2 mm
1.65 to 1.66 inch 
Allowable Limit  41.2 mm
1.62 inch 
Load Setting/Length Setting (New)  118N at 35.0 mm
26.5 lbf at 1.38 inch 
Allowable Limit  100N at 35.0 mm
22.5 lbf at 1.38 inch 
Tilt  1.0 mm
0.039 inch 

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