Operation and maintenance manual

4
SM 2122 Rev 1 4-02
Engine - Air Cleaner
Section 110-0050
2. Unscrew wing nut (3), remove gasket (4) and
carefully withdraw primary filter element (5). Inspect
gaskets (2 & 4). Replace if damaged.
3. Do not disturb secondary (safety) filter element (8).
Replace access cover (1) temporarily.
4. The primary filter element (5) should be replaced
after a maximum of six cleanings, or annually
whichever comes first. Should the primary filter
element (5) require cleaning one of the methods
mentioned in the “Cleaning Primary Filter Element”
section should be used.
Assembly/Installation
Numbers in parentheses refer to Fig. 2.
Note: Tighten all fasteners to standard torques listed in
Section 300-0080, STANDARD BOLT AND NUT
TORQUE SPECIFICATIONS.
Assembly and installation of the air cleaner assembly
is the reverse of disassembly and removal. Always
check air cleaner threads are clean and undamaged.
Reset air restriction gauge (16).
Following installation, but before starting the engine,
the following system checks should be carried out:
a. Check air cleaner to engine tube (6) for defects and
that clamps (8, 10 & 12) are securely tightened to
ensure that there are no leaks in the system. Replace
any worn or damaged parts.
b. Check that air cleaner mounting brackets (1 & 13)
are secure and that air cleaner is mounted securely.
MAINTENANCE
Numbers in parentheses refer to Fig. 4, unless
otherwise specified.
WARNING
Always shut down engine before servicing air
cleaner.
1. Check the air restriction gauge (Fig. 4) daily. This
gauge is mounted on the air cleaner outlet pipe and
shows when the system air flow is being restricted, by
a yellow band that gradually rises in the gauge window
as air restriction increases. The yellow band is locked
when maximum allowable restriction is reached.
2. When the yellow band locks at the top of the gauge
window the primary filter element should be serviced.
The air restriction gauge should be reset by pushing
the button on the gauge, holding it for several seconds
and then releasing it. While this device indicates the
need for servicing, it does not give as precise a
measurement as a water manometer or vacuum gauge
connected to the tapping point on the air cleaner outlet
or engine manifold.
3. The vacuator valve (16, Fig. 3) eliminates the need
for frequent servicing. To function, the vacuator valve
lip must point down and be kept free of debris. The
valve should be closed except when the engine is
idling slowly or stopped. If the vacuator valve is lost or
damaged, replace it to maintain normal element service
life.
CLEANING TUBE SECTION
Numbers in parentheses refer to Fig. 3.
The tube section (13) of the air cleaner should be
thoroughly cleaned twice a year. Inspect lower end of
tubes each time dust (15) cup is removed.
Note: Do not apply heat in any form to the air cleaner
plastic tube section.
1. Loosen clamp (14) and remove dust cup (15) and
gasket (12).
Note: Filter elements should always be installed when
cleaning tubes as described in Step 2. This prevents
dirt from entering the clean air chamber.
2. Tubes with a light dust buildup can be cleaned with
compressed air or a stiff fibre brush without removing
from machine. (Do not use a wire brush.)
3. If tubes require washing, remove air inlet cap (17),
any attaching parts securing tube section (13) to
machine and remove clamp (11), tube section (13) and
gasket (12) from body (10).
Fig. 4 - Air Restriction Gauge
SM - 058