CABLE-BTRY NEG 3796862 - Caterpillar

Rework Procedure
Before completing the attached Rework Procedure; Please review the safety actions in the Operation and Maintenance Manual for the engine.
This picture represents a good (316-5978)(Rotocoil AS) without tabs showing.
Image1.1.1
This picture represents a rotocoil with tabs that will need to be replaced with (316-5978)(Rotocoil AS).
Image1.2.1
If rework tool is needed, fabricate tool in attached drawings and use the following rework procedure.
Image1.3.1
Image1.3.2
Image1.3.3
Image1.3.4
1. Bring cylinder to Top Dead Center
2. Remove transformer and wiring
3. Remove rocker cover
4. Remove rocker arms and shafts
5. Remove rocker box and bridges
6. Remove pushrods
7. Remove spark plug
8. Place valve spring compression tool on top of all four valves centered over the spark plug hole.
9. Align positioning bolt (1), (2), with the lower rocker box bolt on the top left and the bridge bolt on the bottom right. Tighten these bolts unit lightly seated. (Image 1.4.1)
Image1.4.1
10. Ensure that the center of the tool is aligned above the spark plug hole and carefully thread main jackscrew into place (3). (Image 1.5.2)
Image1.5.2
11. With jackscrew (3) tightened into spark plug hole. While holding jackscrew with 9/16 wrench (4), Tighten 1 1/8 nut (5) to compress the valve springs. (Image 1.6.1)Be cautious not to damage spark plug threads. Stop tightening once the top of the jackscrew in 10cm from the top of the plate.(Image 1.6.2)
Image1.6.1
Image1.6.2
12. Continue compressing valve springs until stand offs on tool are seated against head (6). DO NOT TIGHTEN ANY FURTHER; SPARK PLUG ADAPTER DAMAGE COULD RESULT. (Image 1.7.1)
Image1.7.1
13. Valve stems and keepers should now be accessible. Use magnet to remove 2 keepers from each valve stem. (7) (Image 1.8.1)
Image1.8.1
14. Once all keepers are removed, start to loosen 1 1/8 nut, (5) while holding jackscrew with 9/16 wrench (4), to relieve the pressure from the springs.
15. Nut (5) should be completely loose then the positioning bolts (1 and 2) can be removed and plate can be taken off.
16. Remove old rotators and install new rotators.
17. Repeat steps 7-12 to reinstall the keepers.
18. Once keepers are in place, start to loosen 1 1/8 nut, (5) while holding jackscrew with 9/16 wrench (4), to relieve the pressure from the springs. Ensure keepers stay in groove while loosening.
19. Nut (5) should be completely loose then the positioning bolts (1 and 2) can be removed and plate can be removed.
20. Reinstall spark plug with new gasket 9Y-6792
21. Reinstall rocker box with new gasket 296-5820
22. Reinstall pushrods
23. Reinstall valve bridges and adjust
24. Reinstall rocker arms and adjust
25. Mount rocker box
26. Reinstall transformer and wiring
27. Move next cylinder to TDC and start procedure over again until all 332-7386
rotators have been replaced with 316-5978 rotators.
Image1.9.1
Image1.9.2