Illustration 103 g00103777
Typical service indicator
Observe the service indicator. The air cleaner
element should be cleaned or the air cleaner element
should be replaced when one of the following
conditions occur:
• The yellow diaphragm enters the red zone.
• The red piston locks in the visible position.
Test the Service Indicator
Service indicators are important instruments.
• Check for ease of resetting. The service indicator
should reset in less than three pushes.
• Check the movement of the service indicator core
when the engine is run at full load speed. The core
should latch approximately at the greatest vacuum
that is attained.
If the service indicator does not reset easily, or if the
core does not latch at the greatest vacuum, the
service indicator should be replaced. If the new
service indicator will not reset, the hole for the service
indicator may be plugged.
If necessary, replace the service indicator more
frequently in environments that are severely dusty.
Replace the service indicator annually regardless of
the operating conditions. Replace the service
indicator when the engine is overhauled, and
whenever major engine components are replaced.
Note: When a new service indicator is installed,
excessive force may crack the top of the service
indicator. Tighten the service indicator to a torque of
2 N·m (18 lb in).
i02263740
Engine Crankcase Breather -
Clean
SMCS Code: 1317-070
NOTICE
Perform this maintenance with the engine stopped.
If the crankcase breather is not maintained on a
regular basis, the crankcase breather will become
plugged. A plugged crankcase breather will cause
excessive crankcase pressure that may cause
crankshaft seal leakage.
Illustration 104 g01136454
Typical example
(1) Hose clamp
(2) Breather assembly
(3) Retaining clamp
(4) Seal
1. Loosen hose clamp (1) and remove the hose from
breather assembly (2).
2. Loosen retaining clamp (3). Remove the breather
assembly and seal (4).
3. Wash the breather element in solvent that is clean
and nonflammable. Allow the breather element to
dry before installation.
4. Install a breather element that is clean and dry.
Install the seal, the breather assembly, and the
clamp. Refer to the Specifications, SENR3130 in
order to locate the proper torques.
5. Install the hose. Install the hose clamp. Refer to
the Specifications, SENR3130 in order to locate
the proper torques.
SEBU7125-13
121
Maintenance Section
Engine Crankcase Breather - Clean
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