Removing 885 transmission

The place to discuss all matters relating to David Brown Tractors. You will need to register your user name before you can post. If you have already registered could you please make sure that your location details have been completed. Go to My Account in the Main Menu on the left, and then go into "Edit Your Information" and complete your location details. Give the Country (and State/Province if you wish) if outside the U.K. County if within the U.K. Location details helps other members if you need spares, technical advice, or the nearest practical help.

DISCLAIMER -

David Brown Tractor Club Ltd
Forum/website Disclaimer

1. This [forum/website/chat room] and the advice and opinions expressed herein is not a solution for mechanical, electrical, valuations, other problems, breakdowns or issues experienced in relation to the vehicles referenced.

2. If reliance is thought to be placed on any of the information guidance or input provided such information will be expressly confirmed as appropriate to be relied upon.

3. In the absence of any such confirmation no reliance should be suggested or inferred.

4. Members must not disclose information to 3rd parties in anticipation that reliance will be given by non-members.

5. Non-members must not purport to give advice on behalf of David Brown Tractor Club.

6. If you or someone you know is experiencing difficulties or repeated breakdowns you must seek assistance for an appropriately qualified expert who holds themselves out as such.

7. Any comments are free of charge and made or posted on an ex gratia basis. No member or non-member may advertise their professional services

Any user inactive for more than 3 months will automatically be deactivated, please contact admin@dbtc.co.uk if you would like to be reactivated.

Please be aware that your user name and entered location can be seen by all members. We only store information you have entered which is your email address and username, your IP is also stored, we have no access to private passwords.

If you do not agree with your information being stored, please do not register an account, If you wish to unsubscribe at any time please email admin@dbtc.co.uk giving your username.

Amended 27/10/18

Moderators: Segrie61, admin

Post Reply
ScottUSA
Posts: 57
Joined: Mon Mar 26, 2018 1:59 pm
Location: North Carolina

Removing 885 transmission

Post by ScottUSA » Mon Jun 17, 2019 6:23 pm

1976 DB885 leaking oil between the trans and diff. Ample silicone suggests someone has been in there before. This repair will be undertaken this fall unless the leak get too much worse. Along with the leak repair is a worn shift rail socket for 1st/rev that needs to be replaced. Read through the factory R&R transmission section. Can the rear tires be left on so the rear housing can be rolled back or must it be supported by a lift? Are there any areas in the hydraulic pump, pto, differential or transmission I should be sure look inspect while it's apart?

User avatar
DB780
Posts: 1623
Joined: Fri Dec 30, 2005 4:06 pm
Location: Lincolnshire

Re: Removing 885 transmission

Post by DB780 » Mon Jun 17, 2019 8:52 pm

Yes, you can just roll the back end and gearbox away and out of the gearbox casing. The front half is supported on a jack and axle stands. There is a threaded hole in the gearbox casting that an eyebolt is fitted into and the backend rolled back and supported safely. The hydraulic suction pipe need to be removed. The PTO or carden shaft can be removed but it is not essential although it doe make re-assembly easier. David Brown recommended a hard setting gasket replacer for the back axle to gearbox join rather than a silicone one.

ScottUSA
Posts: 57
Joined: Mon Mar 26, 2018 1:59 pm
Location: North Carolina

Re: Removing 885 transmission

Post by ScottUSA » Mon Jun 17, 2019 9:31 pm

The transmission can be left attached to the back end as it is rolled away from the transmission housing/gearbox casing? Am I understanding you correctly? The threaded hole, is it a dedicated hole for this purpose or one of the trans cover bolt holes? I'll look for it next time the tractor is used.

Hard setting gasket replacer; Permatex Aviation gasket maker has been around for decades in the U.S. but you may not recognize that product. Yamalube Yamabond is another semi drying gasket maker and possibly one with universal appeal? It's the one I am likely to use.

Thanks for the responce.

User avatar
DB780
Posts: 1623
Joined: Fri Dec 30, 2005 4:06 pm
Location: Lincolnshire

Re: Removing 885 transmission

Post by DB780 » Mon Jun 17, 2019 9:52 pm

Yes, it is an hole for that purpose and the transmission goes back with the axle.

User avatar
cobbadog
Posts: 549
Joined: Tue Oct 11, 2011 6:18 am
Location: beautiful Coopernook NSW. near Taree. NSW. Australia

Re: Removing 885 transmission

Post by cobbadog » Tue Jun 18, 2019 7:01 am

I like and use that Permatex Aviation gasket sealer and it works a treat. Been available here in Oz for many years and prior to it being called Permatex it was also named Rolls Royce Aviation gasket cement. If it is not the same product it fooled me, same smell, consistency, colour and bottle, different name.

User avatar
ollek
Posts: 3741
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Re: Removing 885 transmission

Post by ollek » Tue Jun 18, 2019 8:47 am

Many paper gaskets in later tractors wore substituted by Loctite 504 Gasket Eliminator at the David Brown assembly line. This product was also recommended to be used is places where the loading on bolts is high. This flange seal makes the seam stronger as well as working as a sealant. The use of Loctite 504 instead of the paper gasket, or any other products, between the rear axle and the gear box frame is the solution recommended by David Brown.

Post Reply

Who is online

Users browsing this forum: dwighted and 14 guests