TEST OR INSPECTION
7. ENGINE KNOCKS
See if fuel quality is bad. (Drain small amount and check for particles.)
Replace fuel filter elements. (See pages 2-183 and 2-186.)
8. ENGINE OVERHEATS
Step 1. Check coolant level. Coolant level should be within 1/2" of bottom of fill pipe.
Step 2. Inspect radiator core for debris.
Clean radiator core.
Step 3. Inspect engine oil level.
Step 4. Inspect radiator pressure cap for defects.
Step 5. Inspect transmission oil level.
Step 6. Determine if the vehicle is being continuously overloaded.
Direct operator not to exceed rated load capacity.
RTCH is rated to carry 50,000 lb. load. Do not exceed capacity.