UAZ -374195 Operation Manual page 67

5. Check the right fuel tank connection to the atmosphere. The drain
line from the engine (proportioning valve) into the left tank shall not
be squeezed.
6. Measure the fuel flow at the fuel rail drain (it shall be at least 75
l/h at the back pressure of 300-10 kPa and the power supply voltage of
(13.5 ± 0.1)V). Measure via the fuel drain hose by disconnecting it from
the jet pump.
If no drain or drain less than 75 l/h exists, replace the electric fuel pump.
Note. At the ambient air temperature of below 0°С, the clogging signs
can be due to water presence and freezing in the feed system. If water
was detected in the fuel, drain the fuel and flush the fuel tanks with pure
gasoline, and replace the fine fuel filter.
Jet pump. Check from time to time tightness of the pump and
connections thereof. If the fuel is not pumped from the auxiliary tank
into the main one, disassemble the pump (unscrew the nozzle), flush it
and purge with air.
The jet pump is fixed on the fuel hoses near the frame side member.
leaks in couplings shall be rectified through tightening (see Appendix
2) or by replacing faulty components.
Upon completion of any fuel system maintenance operations
related to tightening of connections, removal or replacement of parts and
assemblies, the system tightness must be checked as follows:
- make sure the fueling neck plugs are screwed in tightly;
- tighten collars and screw couplings to the sealed condition;
- start the engine running idle and check the system visually. Fuel leaks
or wetting of the feed system components are not allowed.
The throttle pedal actuator may require rope tensioning adjustment
in the course of operation. To tension the rope, unscrew nut 3 (Fig. 9.8)
and tighten nut 4.
Fig. 9.8. Throttle pedal actuator adjustment
1 — wire; 2 — wire shell with adjusting end; 3, 4 — nuts
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