3512E Engines for Well Stimulation Pumps Caterpillar


Cylinder Head

Usage:

3512E HF8


Illustration 1g06195220

Table 1
Item  Qty  Part  Specification Description 
480-7205 Valve Seat  During installation, shrunk the valve seat insert with reduced temperature (Reference temperature : −60° C (−76° F)) and press the insert into the cylinder heads counterbore. 
456-0411 Valve Seat  During installation, shrunk the valve seat insert with reduced temperature (Reference temperature : −60° C (−76° F)) and press the insert into the cylinder heads counterbore. 
3B-0623 Cup Plug  Apply Loctite 540 to the bores for the cup plugs prior to the installation. 
3B-0645 Cup Plug  Apply Loctite 540 to the bores for the cup plugs prior to the installation. 
Installation depth for cup plug is 9.0 ± 0.5 mm (0.35 ± 0.02 inch)
Installation depth for cup plug is 1.0 ± 0.5 mm (0.04 ± 0.02 inch)


Illustration 2g06195231

Table 2
Bolt Tightening Procedure in the 416-8282 Block Spacer Gp 
Item  Qty  Part  Specification Description 
448-3955 Cylinder Head Fastener Gp  Use the following procedure to tighten the bolts for the cylinder head as shown in Illustration 2.

1. Before assembly, apply clean engine oil to the bolt threads.
2. Tighten bolt 1 through 8 in the numerical sequence to 30 ± 5 N·m (22 ± 4 lb ft).
3. Again, retighten bolts 1 through 8 in the numerical sequence to 100 ± 15 N·m (74 ± 11 lb ft).
4. Again, retighten bolts 1 through 8 in the numerical sequence to 450 ± 15 N·m (330 ± 11 lb ft).
5. Loosen bolts 1 through 8 in the numerical sequence to an angle of 180 ± 5 degrees.
6. Tighten bolts 1 through 8 in the numerical sequence to 180 ± 15 N·m (133 ± 11 lb ft).
7. Again, retighten bolts 1 through 8 in the numerical sequence to 180 ± 15 N·m (133 ± 11 lb ft) and turn an extra angle of 180 ± 5 degrees.
Note: Tighten bolts (7) only after bolts 1 through 8 have been given the final torque.
8. Tighten bolts (7) to 55 ± 10 N·m (40 ± 7 lb ft).
 
448-3958 Cylinder Head Fastener Gp 
5B-0213 Bolt 

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