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6R140 Transmission Input Assembly Installation Tool

$127.99
In stock • ships from the USA • qualifies for FREE shipping

Supports and centers the roughly 75 lb input assembly while you install it in a Ford 6R140 case. Does the job of OEM tool T-307651.

Fits these transmissions
Secure Stripe checkout • free shipping over $100 • 30-day returns
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Ships from the USA
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About this product

Anyone who has set a Ford 6R140 input assembly into the case by hand knows the problem: it is long, top-heavy and heavy enough that you cannot feel the splines engage while you are holding it. This steel support tool does the job of Ford special service tool T-307651 for 6R140 TorqShift units behind the 6.7L Power Stroke and the gas engines in 2011-up F-250, F-350, F-450 and F-550 Super Duty trucks. It is the tool rebuilders reach for when the last job ended with a nicked sealing ring, a galled bushing, or a unit that would not turn after the bolts were torqued.

What the input assembly tool does in a 6R140

In the 6R140 the input shaft is spin-welded to the 4-5-6 clutch drum and goes in with the forward drum that houses the 1-2-3-4 and 3-5-R clutches. Built up with clutches, the input assembly weighs about 75 pounds, and ATRA notes the complete unit runs around 350 pounds dry. The assembly has to drop straight down through the case so the drum splines index into the clutch packs and shells below and the shaft passes the sealing ring bores without dragging. The tool clamps to the shaft and gives you a solid point to lift from, by hand or with a hoist, so the assembly hangs plumb and you lower it under control instead of rocking it in.

Symptoms of an input assembly installed without support

How to confirm the job needs it

If you are already inside the unit, inspect the old sealing rings and their bores. Rings that are shaved on one edge, or a bore that is scored on one side only, point to an assembly that went in crooked last time. A 4-5-6 housing with a broken weld usually shows the same ring damage, so check the drum and rings together. Our 6R140 problems and service guide walks through the teardown checks, and if the complaint is late engagement rather than no move at all, read the delayed engagement guide before you blame the input clutches.

Fitment

Listed for the Ford 6R140 used in 2011-up F-250, F-350, F-450 and F-550 Super Duty, both 6.2L or 7.3L gas and 6.7L diesel. It replaces OEM tool T-307651. The tool itself is steel, about 3.4 pounds, and ships as one piece. It is listed for the 6R140 only, not for other Ford six- or ten-speed units. Confirm the transmission code on your case tag before ordering, or send us your year and VIN. Every part we carry for this unit is on the 6R140 transmission page.

Install notes

After the unit is back in the truck, fill with Mercon LV, reset the adaptive tables with a scan tool, and drive it through every shift so the module relearns.


Specifications

Transmission
Replaces OEM
Fitment
Assembly weight supported
Material
Tool weight

6R140 Transmission Input Assembly Installation Tool: common questions

Does this replace Ford tool T-307651?

Yes. It does the same job as T-307651, supporting and centering the 6R140 input assembly while it is installed in the case.

Will it fit a 6R80 or 10R140?

No. It is listed for the Ford 6R140 TorqShift only. Check the transmission code on your case tag before you order.

How heavy is the part it handles?

The 6R140 input assembly is roughly 75 pounds. The tool itself is about 3.4 pounds of steel.

Can I use it with an engine hoist?

Yes. The tool gives a lift point on the shaft, so you can lower the assembly with a hoist or bench crane instead of carrying the full weight by hand.

What should I replace while the input assembly is out?

Replace all sealing rings and piston seals, the frictions and steels from a rebuild kit, and inspect the spin weld on the 4-5-6 drum before reinstalling.


Repair guides for this job

Sources
  1. ATRA / GEARS Magazine — Problems and Fixes! Revisiting the 6R140 Transmission. 75 lb input assembly, 350 lb dry unit weight, engine hoist recommendation, and the spin-welded input shaft to 4-5-6 drum. gearsmagazine.com/magazine/problems-and-fixes-revisiting-the-6r140-transmission/
  2. Sonnax TASC Force — Ford 6R140: Repairing the Elusive Intermittent Neutral Condition. Overdrive clutch housing weld cracks, forward drum layout, and sealing ring damage found alongside housing failures. www.sonnax.com/tech_resources/1129-ford-6r140-repairing-elusive-intermittent-neutral-condition
  3. Ford Component Sales — Ford 6R140 6-Speed Automatic Transmission Technical Specifications. 6R140 applications and Mercon LV fluid specification. www.fordcomponentsalesllc.com/wp-content/uploads/2021/09/FCS_6R140_6-Speed_AutoTrans_web_R6.pdf

6R140 Transmission Input Assembly Installation Tool

$127.99
In stock • ships from the USA • FREE shipping • 30-day returns

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