Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2021TRANSIT-350 HD BASE, VAN CARGO EXTENDED, 3.5L ENG VIN 8, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 256 (ENGINE - 6.7L POWER STROKE DIESEL)SPECIFICATIONSVALVE SPRINGS
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWD
Valve Springs
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWDSECTION Valve Springs
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
| Item | Specification |
|---|---|
| Valve spring free length - reference | 1.957 in (49.7 mm) |
| Valve spring solid height - maximum | 0.906 in (23 mm) |
| Valve spring compression pressure - installed | 34.0 mm @ 390 +/- 20 N (1.338 in @ 87.6 +/- 4.4 lbf) |
| Valve spring compression pressure - valve open | 24.5 mm @ 650 +/- 29 N (0.964 in @ 146.1 +/- 6.5 lbf) |
| Valve spring installed height - reference | 1.319 -1.358 in (33.5 -34.5 mm) |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.