Table 30
Troubleshooting Test Steps
Values Results
1. Breather Filter
A. Check that filter element (2) is correctly installed and that
the element is not damaged.
B. Check for restrictions or blockages in breather canister (3).
Note: If a new filter element blocks before the service period
is completed, the blockage can indicate a fault in the engine.
Note: In cold ambient conditions, ice can form in the outlets of
the breather canister.
Filter Result: The filter element (1) is not correctly installed or
the element is damaged.
Repair: Install the filter element correctly or replace the fil-
ter element.
Result: There are restrictions or blockages in the breather
canister.
Repair: Clean the interior of the breather canister.
Result: The breather is clean and operating correctly.
Proceed to Test Step 2.
2. Engine Oil Level
A. Check the oil level in the engine.
Oil level Result: The engine oil level is high.
Repair: Check for contamination of the oil with fuel or cool-
ant. Refer to Troubleshooting, “Oil Contains Fuel” or Trou-
bleshooting, “Oil Contains Coolant”.
If the engine oil is not contaminated, remove the excess oil.
Result: The engine oil level is correct.
Proceed to Test Step 3.
Illustration 36 g03758618
(4) Breather drain hose
(5) One-way valve
94 UENR4469-36
Symptom Troubleshooting
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