Service instructions, Maintenance, Caution – Lincoln Electric IM949 SAE400 User Manual

Page 23: Single- and two-stage engine air cleaners

D-4

MAINTENANCE

D-4

SAE-400

Unfasten or unlatch the
service cover. Because
the filter fits tightly over the
outlet tube to create the critical seal, there will
be some initial resistance, similar to breaking
the seal on a jar. Gently move the end of the filter
back and forth to break the seal then rotate while
pulling straight out. Avoid knocking the filter
against the housing.

Remove the Filter

Rotate the
filter while
pulling
straight out.

If your air cleaner has a safety filter, replace it every third primary
filter change. Remove the safety filter as you would the primary
filter. Make sure you cover the air cleaner outlet tube to avoid any
unfiltered contaminant dropping into the engine.

If your air cleaner is equipped with a Vacuator Valve
Visually check and physically squeeze to make sure the
valve is flexible and not inverted, damaged or plugged.

Inspect the new filter carefully, paying attention to
the inside of the open end, which is the
sealing area. NEVER install a damaged
filter. A new Donaldson radial seal
filter may have a dry lubricant on the
seal to aid installation.

If you're servicing the safety filter, this should be seated into
position before installing the primary filter.

Insert the new filter carefully. Seat
the filter by hand, making certain it is
completely into the air cleaner housing
before securing the cover in place.

If the service cover hits the filter before it is fully in place, remove
the cover and push the filter (by hand) further into the air cleaner
and try again. The cover should go on with no extra force.

Once the filter is in place, secure the service cover.

Make sure that all mounting bands, clamps, bolts, and connections
in the entire air cleaner system are tight. Check for holes in piping
and repair if needed. Any leaks in your intake piping will send dust
directly to the engine!

The critical sealing area will stretch
slightly, adjust itself and distribute the sealing pressure evenly. To
complete a tight seal, apply pressure by hand at the outer rim of
the filter, not the flexible center. (Avoid pushing on the center of the
urethane end cap.) No cover pressure is required to hold the seal.
NEVER use the service cover to push the filter into place! Using the
cover to push the filter in could cause damage to the housing, cover
fasteners and will void the warranty.

Visually inspect the old filter for any signs
of leaks. A streak of dust on the clean side
of the filter is a telltale sign. Remove any
cause of leaks before installing new filter.

Clean Both Surfaces of the Outlet Tube

Clean Both Surfaces of the Outlet Tube
and Check the Vacuator™ Valve

and Check the Vacuator™ Valve

Inspect the Old

Inspect the Old
Filter for Leak Clues

Filter for Leak Clues

Inspect the New Filter for Damage

Insert the New Radial Seal Filter Properly

Check Connectors for Tight Fit

NEVER use the service cover to

NEVER use the service cover to
push the filter into place! Using

push the filter into place! Using
the cover to push the filter in could

the cover to push the filter in could
cause damage to the housing, cover

cause damage to the housing, cover
fasteners and will void the warranty.

fasteners and will void the warranty.

Caution

Use a clean cloth to wipe the filter sealing surface and the inside of
the outlet tube. Contaminant on the sealing surface could hinder an
effective seal and cause leakage. Make sure that all contaminant is
removed before the new filter is inserted. Dirt accidently transferred
to the inside of the outlet tube will reach the engine and cause
wear. Engine manufacturers say that it takes only a few grams of
dirt to "dust" an engine! Be careful not to damage the sealing area
on the tube.

Wipe both sides
of the outlet
tube clean.

Outer edge of the
outlet tube

Inner edge of the
outlet tube

Service Instructions

Single- and Two-Stage Engine Air Cleaners