74
Maintenance Section
Engine Crankcase Breather - Clean
g00103777
Illustration 24
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 yellow core when the
engine is accelerated to the engine rated speed.
The yellow core should latch approximately at the
greatest vacuum that is attained.
If the service indicator does not reset easily, or if the
yellow 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.
The service indicator may need to be replaced
frequently in environments that are severely dusty, if
necessary. 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).
i01007514
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.
g00516808
Illustration 25
(1) Hose clamp
(2) Breather assembly
(3) Seal
1. Loosen hose clamp (1) and remove the hose
from breather assembly (2).
2. Remove breather assembly (2) and seal (3).
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 seal (3) and breather assembly (2).
5. Install the hose. Install hose clamp (1). Refer to
the Operation and Maintenance Manual, “Torque
Specifications” topic (Maintenance Section) for
the proper torque.
i00259257
Engine Mounts - Inspect
SMCS Code: 1152-040
Inspect the engine mounts for deterioration and for
proper bolt torque. Engine vibration can be caused
by the following conditions:
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