Transmission Jack or Trolley Jack? How to Drop a Gearbox Safely

Dropping a gearbox for a new clutch means lowering a heavy, awkward lump while you lie under the car. Do it with the car on stands, a jack that keeps the box level and strapped or chained down, and the engine supported where the workshop manual says.

The Transmission Stands and Jacks range at PartsForMachines lists 49 products from Sealey, SIP, Draper, Govoni, Sykes Pickavant and Chicago Pneumatic. They include 27 floor, vertical and combo transmission jacks, plus support stands.

Is a Trolley Jack Good Enough, or Do I Need a Transmission Jack?

A trolley jack will only do if you can keep the box level, central and secured on it, which is what a transmission jack is built for. A gearbox should be chained or strapped to the saddle before it is raised, lowered or moved.

The TJ150E floor transmission jack, for example, takes gearboxes and differential units up to 150kg, with a webbing strap, 5° of tilt and a hand-operated scissor lift for precise positioning. Whichever jack you use, have the car on axle stands on firm, level ground, or on a lift; never work under a car held only by a jack.

Axle Stands or a Lift: Floor or Vertical Transmission Jack?

On axle stands you will usually need a floor transmission jack; vertical jacks are made for a car on a lift or ramp. Floor jacks start low: the TJ150E’s saddle runs from 195 to 585mm. Most vertical jacks start at about 1,075 to 1,260mm; a few telescopic models start lower, the 19788 at 940mm.

With the car on its stands, measure up to the underside of the gearbox and allow room to lower it out. On a lift, the 300ETJ vertical transmission jack (1,075 to 1,895mm) raises by foot pedal, leaving both hands for the gearbox.

How Do I Stop the Gearbox Tipping Off the Jack?

Set the box level and central on the saddle, match the tilt to its angle, and chain or strap it down before the fixings come out. Keep it secured until it is down. Lower the saddle before moving the jack, and take corners slowly: a raised load can tip.

An adjustable saddle helps. The 19788 vertical transmission jack tilts forward, back and sideways, with chain straps and stabilising struts; Draper builds it to EN1494. Look for a dead man’s release too: on the 600TR, a spring-loaded one cuts the risk of the saddle dropping by accident.

What Needs Supporting When the Gearbox Comes Out?

The gearbox itself until it is clear of the car, and sometimes the engine. Take the box’s weight on the jack, chained down, before its mounting or the last bellhousing bolts come out. With the gearbox out or its mountings off, check the workshop manual for whether the engine needs a support beam above or a support below.

On a lift, an under-vehicle support stand such as the 03629 can hold exhausts, axles, differentials, prop shafts or subframes up to 680kg, adjustable from 1,365 to 2,015mm, with a screw for fine setting.

What Should I Check Before I Buy?

• where the car will be, on axle stands (floor jack) or a lift (vertical jack), and the saddle height range against your measurement
• your gearbox’s weight, plus any transfer box, from the workshop manual, against the jack’s rating
• the saddle: fixed, tilting, or able to take an optional adjustable gearbox support
• how it secures and lowers the load: strap or chain, dead man’s release, controlled lowering
• support for the engine and anything left hanging, such as the exhaust or prop shaft

Browse the Transmission Stands and Jacks range, or contact the PartsForMachines team by WhatsApp, telephone or email with the vehicle, the gearbox and whether you work on axle stands or a lift.

Product options, delivery options and returns terms are shown on each product page. A 30-day return policy applies to eligible items.

Frequently Asked Questions

What capacity transmission jack do I need?

One rated for at least the weight of your gearbox, plus any transfer box coming out with it; check the workshop manual for the figure. The range runs from the 150kg TJ150E up to 1.5-tonne floor and vertical jacks such as the 1500E and 1500TR.

Is a higher-capacity transmission jack more stable?

Not automatically. The 1-tonne 1000ETJ stands on the same 535 x 585mm base as the 300kg 300ETJ. Compare the base size, the saddle and how the load is secured, not just the rating.

Is it worth buying a transmission jack for one gearbox job?

For a one-off, hiring or borrowing one can make sense. If you change clutches or work on gearboxes and differentials regularly, owning one is easier to justify; the TJ150E, for example, also handles differential units.

Chain or ratchet strap: which holds the gearbox best?

The restraint made for your jack, pulled tight before the fixings come out. Don’t swap the chains for a weaker restraint. The TJ150E has a webbing strap with a roller buckle, while the 1000E and 1500E come with a chain.

Fixed or adjustable saddle: is tilt worth paying for?

It often is: tilt lets you match the gearbox’s angle as it comes off and goes back on. Many fixed-saddle vertical jacks accept an optional adjustable gearbox support, such as the ADT7 for the 300ETJ.

How do I line the gearbox up again when refitting?

Chain the box to the saddle, raise it into place and fine-tune its position with the adjusters; a precision valve, as on the 1000E, helps with delicate realignment. Then tighten the bolts to the torque in the service manual.

Gearbox alone, or engine and gearbox together?

It depends on the vehicle, so follow the workshop manual. Where both have to come out together, the job usually moves from a transmission jack to an engine crane, such as the folding 03685 in this range.

What does “quick lift” mean on a transmission jack?

It raises the saddle up to the gearbox in fewer pumps, saving time and effort under the car. The 300TRQ, for example, needs no more than 20 pumps to reach full height.

Can a transmission jack hold an automatic or DSG gearbox?

Yes, with a suitable saddle or support. The GO925 gearbox support is made for manual and automatic gearboxes, DSG units and differentials up to 150kg. It fits a suitable jack or stand through a 30mm adaptor and tilts about ±35° forward and back.

Is a high-level support stand the same as an axle stand?

No. Stands such as the ASH2000 support part of a vehicle on a lift where you need free access underneath. They must be used in pairs and never to hold a vehicle up on their own.