Engine 4M40 139-7879 Valve Guide Exhaust 4PCS Fit Excavator Caterpillar CAT 305.5 306 307C 307D 308C CR

Product Name: Valve Guide Exhaust (4PCS)
Reference Part Number: 139-7879, 1397879
Compatible Machine: Excavator Caterpillar CAT 305.5 306 307C 307D 308C CR…

Description:
The valve guides are used to positively locate the valve so it makes proper contact with the valve seats. They are pressed or integrally casted into the cylinder head. Valve Guides also serve to conduct heat from the combustion process out from the exhaust valve and into the cylinder head.

Pos. Part No Qty Parts name Comments
1. 139-7961 [2] BOLT (90-MM LG)
2. 139-7929 [4] BOLT (125-MM LG)
3. 139-7928 [14] BOLT (105-MM LG)
4. 139-7809 [18] WASHER
5. 190-5741 [1] HEAD AS
6. 096-8489 [10] BOLT (40-MM LG)
7. 139-7805 [10] BUSHING
8. 094-9862 [1] CAP
9. 094-9866 [1] CAP
10. 135-8447 [1] CAP
11. 139-7939 [3] CAP
12. 190-5742 [4] JET
13. 148-1820 [4] CAP
14. 139-7941 [4] CAP
15. 139-7885 [4] SEAT (STANDARD)
139-7971 [4] SEAT (0.3-MM OS)
139-7972 [4] SEAT (0.6-MM OS)
16. 139-7950 [4] SEAT (STANDARD)
139-7973 [4] SEAT (0.3-MM OS)
139-7974 [4] SEAT (0.6-MM OS)
17. 139-8128 [4] BALL
18. 139-7881 [8] STUD (43-MM LG)
19. 139-7879 [4] GUIDE
139-7977 [4] GUIDE (0.05-MM OS)
139-7978 [4] GUIDE (0.25-MM OS)
139-7979 [4] GUIDE (0.5-MM OS)
20. 139-7880 [4] GUIDE
139-7980 [4] GUIDE (0.05-MM OS)
139-7981 [4] GUIDE (0.25-MM OS)
139-7982 [4] GUIDE (0.5-MM OS)
21. 139-7808 [1] JOINT
22. 139-7955 [1] GASKET (A)
139-7956 [1] GASKET (B)
139-7957 [1] GASKET (C)
139-7958 [1] GASKET (D)