Service and Repair Manual Product description
Function description
Fuel diagram
Fig. 21: Fuel diagram
a Low pressure – single walled c High pressure – double
walled
CR Customer responsibility
b Return line – single walled d Depending on engine config-
uration
1 Fuel tank 4.1 B709 – Before fuel filter
(Temperature)
6 Connecting block
2 Fuel prefilter & water sepa-
rator
4.2 B702 – After fuel filter (Pres-
sure)
7 Injectors A1 – B8
2.1 Servicing point 5 High pressure pump A and B 8 Break leakage detection
block (if available)
2.2 B710 – WIF pre-filter 1 5.1 Y703 and Y704 – Fuel pump
VCV
8a B7921 – HP leakage detec-
tion Bank A (Leakage)
2.3 B745 – WIF pre-filter 2 5.2 Y708 and Y707 – Fuel pump
PCV 1
8b B7922 – HP leakage detec-
tion Bank B (Leakage)
3 Low pressure pump 5.3 Y728 and Y727 – Fuel pump
PCV 2
9 Fuel cooler (optional)
See next page for continuation of the image legend
KD62V12 33525088601_7_1 EN_US
2021-07
© 2021 by Kohler Co. All rights reserved.
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