Replace Fuel Main Filter Element; Replace Fuel Pre-Filter Element - Hitachi ZW 310-6 Operator's Manual

Replace Fuel Main Filter Element

Replace Fuel Pre-Filter Element

--- every 500 hours or when fuel filter restriction
indicator is lit
d
CAUTION: Depending on the circumstance, diesel
fuel is flammable. When inspecting or performing
service or repairs on the fuel system, to reduce the
possibility of fire and resulting severe personal
injury, death, or property damage, never smoke
or allow sparks or flames (such as pilot lights,
electrical switches, or welding equipment) in the
work area.
IMPORTANT:
 Be sure to use only genuine Hitachi elements for
the fuel main filter element and the pre-filter
element. Failure to do so may lower engine
performance and/or shorten the engine service
life.
 Make sure that debris, water, steam, or cleaning
solution does not get inside the fuel system.
1. Prepare 1 liter or larger capacity container to hold the
drained fuel.
2. Loosen and remove fuel main filter (1) and prefilter
(2) respectively using the provided filter wrench.
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NOTE: Make sure gasket (3) does not stick to the filter
head.
3. Apply a light film of clean engine oil to gasket surface
of the new filter.
IMPORTANT: Do not fill fuel main filter (1) with fuel
before installation.
4. Install empty fuel main filter (1) to the filter head.
5. Fill fuel prefilter (2) with clean fuel and loosely install
it to the filter head.
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CAUTION: Mechanical overtightening can distort
the threads as well as damage the filter element
seal or filter canister.
6. Tighten the filters an additional three-fourths turn
after the gasket contacts the filter head surface.
Follow the instructions supplied with the filter.
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NOTE: Main filter (1) tightening torque: 38 N·m (3.8
kgf·m, 28 lbf·ft)
MAINTENANCE
2
7-64
1
90Z7B-7-64-1
3
90Z7B-7-68-2