Author Topic: 5speed zf gearbox spare parts  (Read 1665 times)

mauro12

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5speed zf gearbox spare parts
« on: June 06, 2025, 17:13:12 »
Hi guys, i would like to know if there are some general spare parts for the 5speed zf gearbox . I've never touched anything apart from a resealing and oil replacment . Since i brought the car to a different mechanic for general maintenance , he told me that the gearbox is quite noisy . Honestly i do not hear any strange noise , maybe only in 4 gear at low rpm . Anyway , he told me that the sincro are ok but maybe some internal bearings are worn out . Are the bearings for the zf, typical only for this particular gearbox or can be taken from any common gearbox ? Maybe any additive can improve the noise ? Thank you for your help.
Mauro
Mauro Pisani
250sl 1967 5speed zf manual

Cees Klumper

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Re: 5speed zf gearbox spare parts
« Reply #1 on: June 06, 2025, 17:44:56 »
I don't know anything about this manual gearbox type, but I have learned over the years that most/many bearings are of a standard type, meaning that in many cases you can source replacement bearings based on the type of bearing and the exact dimensions. I don't know whether that is the case here, so hopefully with actual knowledge of your ZF gearbox will chime in.
Cees Klumper
1969 Mercedes 280 SL automatic
1968 Ford Mustang 302 V8 being restored father/son project
1961 Alfa Romeo Giulietta Sprint Coupe 1600
1962 FIAT 1500S OSCA convertible
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mauro12

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Re: 5speed zf gearbox spare parts
« Reply #2 on: June 06, 2025, 18:40:31 »
I’ve read the same thing . Bearings should be standard. This question is maybe for those who have the 5speed like dr Benz and many others in the forum .
Mauro Pisani
250sl 1967 5speed zf manual

Benz Dr.

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Re: 5speed zf gearbox spare parts
« Reply #3 on: June 07, 2025, 05:18:11 »
I had mine apart about 20 years ago when spare parts were not even available. When ZF reissued the box some spare parts became available, and I quickly ordered a reverse light switch, which is a ZF part. Even 4 speed MB boxes have no reverse switches available today but you can get one for a ZF.

Back to bearings: These are parts you can get but it becomes a bit more complicated than this. Most of these bearings are tapered roller type and end play has to be set to exact dimensions. Then they press fit the bearings on to the shafts which means you have to figure out a way to remove them without damaging anything else. Not an easy unit to work on. The MB 4 speed box is a dream by comparison.   
« Last Edit: June 08, 2025, 04:20:44 by Benz Dr. »
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn
1966 230SL 5 speed
1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1990 560SEC

mauro12

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Re: 5speed zf gearbox spare parts
« Reply #4 on: June 07, 2025, 06:56:27 »
Thank you Dan . I will not touch anything unless is very damaged . Honestly I’m afraid to have the gearbox in pieces to look for a small noise . I will keep full with fluid or put some additive on it . The most difficult part to obtein is the gears I believe .
Mauro Pisani
250sl 1967 5speed zf manual

Carson

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Re: 5speed zf gearbox spare parts
« Reply #5 on: August 26, 2025, 19:09:47 »
As a member who purchased a Bud’s Benz 5 Speed Transmission that totally improved and transformed  the driving quality of my 280SL until I ran low on transmission fluid and blew several of the gears I am totally sold on this upgrade.  Bud’s is no longer offering this improvement but after discovering that their transmission is a Tremec T5 S10 a transmission that if low on fluid could developed shifting problems in 3rd gear learned that Tremec offered an improvement in it’s T5 World Class model.
In researching where to acquire one came across The Driven Man 5 and 6 Speed Transmission conversion below.
For those of you who are skeptical it satisfies Driving pleasure without sacrificing the need for originality in its ability to be installed without ciutting or drilling mods. As well the car can be easily returned back to the original 4 speed for the purists.
A present ongoing Bring a Trailer auction has a very nice 69 280SL that in 5 days has reached $180,000 and has a Tremec 5 Speed world class transmission kit in it supplied by The Driven Man.

About The Driven Man
The Driven Man was founded in 2005 to provide performance and improvement products for Jaguar and other European classic cars. The goal was to help owners equip their cars with performance and improvement products that would enhance the enjoyment, drivability, safety, reliability and economy of their classic car without changing the pure essence of the machine. The Driven Man is staffed by professional enthusiasts with years of experience.

The Driven Man is proud to offer the best selection of Classic Performance and Improvement parts for all Jaguar models including, XK 120, XK140, XK 150, E-Type, MK II, MK VII, MK VIII, MK IX, XJS, XJ6, XJR, XJ12, XJ8, XKR, S-Type, XK8, XKR and X-Type. We also provide Classic Performance and Improvement for other European brands such as Austin Healey, MG, Lotus, Bentley, Rolls Royce, Morgan, Aston Martin, Triumph, Sunbeam, Porsche, Ferrari and Mercedes Benz.

Many of our gearbox conversions for European cars feature customized versions of the well proven Tremec T5 and TKO 5-Speed gearboxes while the new Tremec T56 Magnum provides the basis for our custom 6-Speed systems. These transmissions can be purchased as bare units or as model specific comprehensive custom packages with components you need to convert from the original manual or automatic gearbox to a modern overdrive gearbox. The Driven Man has the distinction of being the only Tremec Elite level dealer to build gearbox conversions specifically for European cars. We also offer race prep and rebuild services on the TKO, T5, T45, 3650, T56 and Magnum with horsepower ratings up to 1000hp depending on model.

The Driven Man is the North American dealer for the EZ Electric Power Steering Systems with variable assist. These innovative systems allow enthusiasts to have speed sensitive steering to make their classics nimble while parking and making low speed maneuvers yet maintains a firm, direct feeling at speed. This is all in a compact package which fits underneath the dash! With more than 150 custom applications ranging from Porsche 911 to Ferrari Daytona and from Volvo to Jaguar chances are we have a direct fit system for your vehicle. If you are building a custom vehicle, making a rally car or restoring an antique car or truck we can supply custom shafts to adapt to your existing column.

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The commitment does not end with the sale. The Driven Man, backs every gearbox package and EZ Electric Power Steering conversion with an industry leading 24-Month Warranty. We also offer extended hours tech support to better assist our international customers.

If you are looking for performance and improvement parts for your American muscle car then visit our American Powertrain division at www.AmericanPowertrain.com.

The Driven Man
3075 Poplar Grove Rd
Cookeville, TN 38506
1-931-646-4836
thedrivenman@thedrivenman.com
« Last Edit: August 27, 2025, 04:47:46 by Carson »
Gerry Carson
Black on Tan 1969 280SL 5 Speed
Silver on black 1957 190 SL

 

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