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 MANUALSFORD1999WINDSTAR BASE, VAN CARGO, 3.8 4REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1856 (MANUAL TRANSAXLE)DISASSEMBLY AND ASSEMBLY OF SUBASSEMBLIES5TH/6TH GEARNOTES
1999 Ford Windstar Base, Van Cargo, 3.8 4
5th/6th Gear: Notes
1999 Ford Windstar Base, Van Cargo, 3.8 4SECTION Notes
WARNING: This page is about a different car, the 2010 Mercury Milan and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the 5th and 6th gear synchronizer cones, gear teeth and rings for wear or damage. Replace as necessary.
- Using a feeler gauge, while applying pressure and rotating the synchronizer ring, measure the clearance between the 5th gear synchronizer ring and the flank surface of the gear. The measurement should be the same around the entire circumference. Replace the synchronizer ring if less than the minimum specification.NOTE: Set the synchronizer ring squarely on the gear and measure around the circumference.5TH GEAR SYNCHRONIZER RING CLEARANCE SPECIFICATION TABLE
Standard Minimum 1.50 mm (0.059 in) 0.80 mm (0.031 in) - Using a feeler gauge, while applying pressure and rotating the synchronizer ring, measure the clearance between the 6th gear synchronizer ring and the flank surface of the gear. The measurement should be the same around the entire circumference. Replace the synchronizer ring if less than the minimum specification.NOTE: Set the synchronizer ring squarely on the gear and measure around the circumference.6TH GEAR SYNCHRONIZER RING CLEARANCE SPECIFICATION TABLE
Standard Minimum 1.50 mm (0.059 in) 0.80 mm (0.031 in) - Measure the clearance between the clutch hub sleeve and the shift fork. Replace if it exceeds the maximum specification.
- Inspect the clutch hub sleeve and clutch hub operation. Replace if there is a malfunction.
5TH/6TH GEAR CLUTCH HUB SLEEVE AND SHIFT FORK CLEARANCE SPECIFICATION TABLEStandard Maximum 0.10-0.36 mm (0.004-0.014 in) 0.86 mm (0.033 in) - Using a telescoping gauge, measure the ID of the 5th gear. Using a micrometer, measure the OD of the gear sleeve.
- Measure the telescoping gauge to determine if the gear to the gear sleeve clearances are within specifications. If not within specifications, replace as needed.
- Using a telescoping gauge, measure the ID of the 6th gear. Using a micrometer, measure the OD of the gear sleeve.
- Measure the telescoping gauge to determine if the gear to the gear sleeve clearances are within specifications. If not within specifications, replace as needed.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.