Hino | F21c Engine Manual

Main bearing cap torque limits and crankshaft journal wear limits. Fuel and Electrical Systems

| Specification | Value | | --- | --- | | | Diesel, 4-cycle, 8-cylinder, V-type (V8), Overhead Valve, Water-cooled, Direct Injection | | Aspiration | Natural aspiration | | Displacement | 20.781 liters (1,268 cu.in.) | | Bore & Stroke | 150 mm × 147 mm (5.91 in. × 5.79 in.) | | Compression Ratio | 19.2:1 | | Firing Order | 1-8-4-2-7-3-6-5 (Cylinder numbers counted from the timing gear side) | | Maximum Power Output | 400 metric horsepower (290 kW) or 360–430 horsepower | | Maximum Revolution (Full Load) | 2,200 r/min | | Idling Revolution | 500 - 550 r/min | | Direction of Rotation | Counterclockwise (viewed from flywheel) | | Dry Weight | Approx. 1,300 kg (2,866 lb) |

(Dolphin Profia) heavy-duty trucks. Official workshop manuals, such as the F21C Workshop Manual S5-YF21E01A

Requires precise torque-to-yield measurements. Hino F21c Engine Manual

The troubleshooting sections of the Hino F21C Manual handle complex diagnostic trees systematically.

Note: Values are approximate and vary by tune/emissions.

Thermostat opening temperatures and water pump overhaul procedures. 4. Crucial Maintenance Specs for the F21C Specification Parameter Action / Metric Valve Clearance (Cold) Intake Valve ~0.40 mm (Check manual variant) Valve Clearance (Cold) Exhaust Valve ~0.60 mm (Check manual variant) Firing Order V8 Sequence 1-8-4-2-7-3-6-5 (Verify on block) Oil Capacity Total Dry Fill Varies by pan size (~35–45 Liters) Compression Pressure Minimum Limit ~2.5 to 3.0 MPa 5. Common Troubleshooting Scenarios Main bearing cap torque limits and crankshaft journal

If you are performing immediate repairs without a full manual on hand, these critical torque specs and clearances are standard for the F21C engine series: Valve Clearance Adjustment (Cold Engine) 0.40 mm (0.0157 inches) Exhaust Valve Clearance: 0.60 mm (0.0236 inches) Key Torque Specifications

If you’d like, I can:

: Must be pulled and verified to 196–209 ft-lbs (Apply a clean film of engine oil to all threads and seating surfaces before torquing). 12mm Perimeter Bolts : Torqued to 58–65 ft-lbs . Timing Gear Train 1,300 kg (2,866 lb) | (Dolphin Profia) heavy-duty trucks

to prevent contaminants from causing engine damage or seizure. Cylinder Head Bolts: For 16mm bolts, the torque is 196–209 lb·ft ; for 12mm bolts, it is 58–65 lb·ft

The manual highlights specific procedures that are vital for preventing common failures: