NUT & LOCK AS 1M1230 - Caterpillar

Illustration 1 g03318676
Illustration 2 g03318675
Bolt tightening sequence
Table 1
Specification for 386-7198 Turbocharger Air Lines Gp
Item Qty Part Specification Description
1 8 6V-5103 O-Ring Seal Lubricate the bore lightly with 5P-3975 Rubber Lubricant.
2 12 6J-0934 Bolt Use the following procedure in order to assemble the aftercooler assembly and tighten the bolts:
1. Assemble the seals to the aftercooler core.
2. Temporarily secure the bottom seal to the aftercooler with tape. Do not use an adhesive, a silicone lubricant, or any other lubricant for retention of the seal.
3. Assemble the aftercooler with seals to the inlet manifold.
4. Inspect the bottom seal in order to ensure that the seal is seating correctly in the recess.
5. Install the aftercooler cover.
6. Inspect the upper seal in order to ensure that the seal is seating correctly in the recess.
7. Install the cover bolts. Hand tighten the cover bolts.
8. Tighten the bolts in a numerical sequence that is shown in Illustration 2 to 24 6 N m (18 4 lb ft).
9. Again, tighten the bolts in a numerical sequence that is shown in Illustration 2 to 47 9 N m (35 7 lb ft).
10. Remove the tape.
3 16 6V-5101 O-Ring Seal Lubricate the bore lightly with 5P-3975 Rubber Lubricant.