Service manual

FUEL INJECTION PUMP
12. Install a new O-ring (Figure 5-76, (2)) on the
Charge Pump
thermo-element (Figure 5-76, (1)) and tighten
Note: If charge pump was disassembled for
to 22 - 26 ft-lb. (30 - 35 N-m).
inspection, clean all parts thoroughly
Do not over-torque.
before reassembly. If any part is
Figure 5-76
13. lnstall the engine coolant fitting
(Figure 5-75, (3)) and seals in their original
position.
14. lnstall the coolant plug (Figure 5-75, (1)) and
tighten to 16 - 18 ft-lb. (22 - 25 N-m). Do not
over-torque.
15. lnstall the fuel return (Figure 5-77, (2)) and
inlet fittings
(Figure 5-77, (I)), seals and plugs
to positions marked in disassembly.
Figure. 5-77
suspected of damage or failure, replace
the complete pump assembly.
1. lnstall and align pump gears (Figure 5-78, (1))
into pump housing.
2. lnstall the new pump housing O-ring
(Figure 5-78, (2)) into groove and assembly
pump housings. Tighten the two (5 mm hex)
pump housing screws
(Figure 5-78, (3)) to
6
- 7 ft-lb. (8 - 10 N-m).
0003559A
Figure 5-78
lnstall new charge pump housing O-rings
(Figure 5-79, (1)).
Figure 5-79
5-34 MP Series Service Manual YANMAR,