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Repair
Service Manual EF 473 / EF 474 enVersion 1.0
Replacing pump
Tools:
- Torx screwdriver T10
- Long-nose pliers
- Blade screwdriver, no. 7
Procedure:
1. Follow general disassembly (see page 16)
2. Unplug fixed pump cable and electrical
connection on pump (17).
3. Remove clip (14), hose (18) and o-ring
(15).
4. Remove angled hose (9).
5. Release pump (17) first from rubber strap
(12) at the side of the angled hose.
6. Release pump from second rubber strap
(12) and remove right angled connector
(20).
7. Replace defective pump (17).
8. Fix right angled connector (20) to new
pump (17).
9. Attach new pump (17) to rubber strap with
right angled connector (20) first.
10. Plug in electrical connection on pump and
connect pump cable.
)
Check for correct wiring of pump.
11. Attach pump to second rubber strap.
12. Insert new seal (15), mount hose (18) and
clamp (14).
13. Mount angled hose (9).
14
15
9
18
12
17
20
T 128°C
9