UAZ HUNTER 315195, Operating Manual, Page: 77 / 136

77
Prior to replacement, remove dirt from the outer surface of
the filter. When replacing the filter cartridge, prevent ingress of
dirt into the cavity of the filter body.
For replacement, use filter cartridge 1 457 434 310 by BOSCH
Company.
Replacement of the filter cartridge:
- drain fuel from the filter by turning the water drain plug 5
several turns;
- unscrew the filter cartridge 4;
- lubricate gasket 3 on the housing of the new filter cartridge
with pure diesel fuel oil;
- screw on the new filter cartridge and tighten with the torque
of 20-25 N•m (2-2.5 kgf•m).
releasing air from the fuel system.
Air must be released from the system in the following cases:
- dismantling of pipelines, filters or pumps;
- upon replacement of the fuel filter cartridge;
- upon complete fuel burnout of the system.
To release air and fill the system with fuel, the following
operations must be done:
1. Make sure the fuel plugs of tanks are tightened securely.
The fuel tank filler plugs are blind and ensure tight sealing.
2. Loosen the air release plug 5 on the final fuel filter (FFF).
Using a manual priming pump 1 on the FFF, fill the main line
until air bubbles disappear from the fuel going from beneath the
air release plug.
3. Tighten the air release plug 5.
4. Start the engine with starter until steady engine operation.
5. If the engine did not start due to the fact that the high-
pressure tubes are not filled with fuel, you must:
- loosen the fastening nuts of rteh tubes on the orifices;
- by turning the crankshaft with the starter, fill the tubes
with fuel (continuous starter operation time must not exceed 15
seconds) and in the course of the engine turning with the starter,
ensure complete feed of the fuel by pressing on the accelerator
pedal to the limit, with retention of gauge air pressure in the
tanks;
- if fuel leaks from beneath the high-pressure nuts of tubes,
stop turning the crankshaft;
- tighten the nuts;
- start the engine.