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8.14 REPLACING INJECTOR PUMP PARTS
Exploded diagram of the injector pump
The figure shows the injector pump parts.
Caption
1. Tension washer
2. Tappet
3. Stop collar
4. Plunger
5. Spring
6. Screw
7. Support
8. Lever
9. Ring nut
10. O-ring
11. Barrel
12. Delivery valve
13. Gland
14. Spring
15. Filler
16. Pin
17. O-ring
18. Non-return valve
19. O-ring
20. Metal gland (new type)
21. Ring nut
23. Nozzle
24. Spacer
159
8.14.1 Pumping element replacement
1. Press down hard on the pump collar to fit the pin
(A).
2. Disassemble the lock ring (1).
3. Press down hard on the pump collar to remove the
pin (A).
4. Remove the parts (2-3-4-5).
5. Loosen the screws (6).
6. Disassemble the support (7) and the lever (8).
7. Insert tool "7107-1460-029" and disassemble the
ring nut (9).
Important
• Rotate in an alternating way the ring nut during
disassembling to avoid damaging the O-ring (10).
8. Extract the barrel (11), the valve (12) as well as the
parts (13-14-15).
Service Manual LDW FOCS 502 automotive _ cod. ED0053027270 - 3° ed_rev. 02
REPLACING PARTS
25. Preassure rod
26. Spring
27. Setting adjusting shim
28. Injector case
tool "7107-1460-029"
9
delivery valve (12)
sealing surfaces
B
160
29. Control blade
30. Plunger guide
31. O-ring
32. Copper gland
1
3
A
5
6
10
11
13
15
G
8
2
4
7
8
9
12
14
93
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