HOUSING-AXLE 1953953 - Caterpillar

120-8972 Oil Level Gauge (Dipstick) Calibration Procedure
This procedure will calibrate the 120-8972 Dipstick to accurately register a 40 quart FULL capacity and a 34 quart ADD capacity on 3406, 3406B, 3406C, and 3406E Truck Engines.
This procedure should NOT be used on 3406B PEEC and 3406C Electronic Engines equipped with a front sump oil pan.1. Drain a hot engine for 20 minutes. Remove BOTH shallow sump and deep sump drain plugs.2. Remove the oil filter.3. Install the drain plugs removed in Step 1.4. Install a new DRY oil filter.5. Add 28 quarts (7 gallons) of CF4 oil to the engine at locations 1, 2, or 3. ONLY THESE FILL LOCATIONS SHOULD BE USED WITH THIS PROCEDURE. (See the illustration.)
Locations to add oil for dipstick calibration. Location 3 is one of three plugs in unused oil level gauge locations.6. Install the new 120-8972 Dipstick into the guide tube. Then remove the dipstick and NOTE the oil level on the dipstick.7. Mark this level on the new dipstick as "ADD" with an engraving pen or other comparable tool.8. Add 6 quarts (1.5 gallons) of oil to the engine at locations 1, 2, or 3. ONLY THESE FILL LOCATIONS SHOULD BE USED WITH THIS PROCEDURE. (See the illustration.)9. Install the new dipstick into the guide tube. Then remove the dipstick and NOTE the oil level on the dipstick.10. Mark this level on the new dipstick as "FULL" with an engraving pen or other comparable tool.11. Add 6 quarts (1.5 gallons) of oil to the engine for a total fill quantity of 40 quarts.