Problem with case 1494

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
User avatar
peterground
Posts: 8
Joined: Thu Mar 03, 2016 8:32 pm
Location: Poland

Problem with case 1494

Post by peterground » Sat Mar 05, 2016 8:29 am

Hi, I'm Peter and I'm new to this forum. English is not my native language so I'm sorry for eventually mistakes :)
I've got a problem with my case 1494. My case is equipped with tandem hydraulic pump so I've got additional lever on the operator panel (control lever for combining valve marked with arrows). When I want to raise lift arms I must push this lever forward. When I do this lift arms are raising all the time. I can't stop or lower them with linkage control lever. It's like hydraulic pressure is all the time on that lever. When I want to lower lift arms I must pull that lever for combining valve rearward. Only then lift arms can go down.
Has anyone got problem like this?

User avatar
richbug
Posts: 1358
Joined: Mon Mar 22, 2010 5:32 pm
Location: Pennsylvania, United States of America

RE: Problem with case 1494

Post by richbug » Sat Mar 05, 2016 4:27 pm

I have had this issue with my 1494. The "latching valve" inside the selectamatic control valve was stuck.
Users: 780, 1210 Bottle Opener, 1494 4wd open station with 74L, 990, 1394, 1194 High Clearance, another 1394, 1194 LCG, 1290 with 56L, 900, 885 with LS8, 885, 1190

1200, 900 projects, 780,

Parts: 3800, 1200, 1394, 1412, 1490, 770, 885, 990SEL, Red 990I,

User avatar
peterground
Posts: 8
Joined: Thu Mar 03, 2016 8:32 pm
Location: Poland

RE: Problem with case 1494

Post by peterground » Sat Mar 05, 2016 7:44 pm

Thank you good man :) I'm gonna check this valve when I find some spare time.

JamesF
Posts: 1327
Joined: Tue Mar 14, 2006 8:49 pm
Location: South Yorkshire

RE: Problem with case 1494

Post by JamesF » Sat Mar 05, 2016 8:28 pm

A stuck latching valve will cause it to lift constantly

A friend of mine had this problem on a 780 and more recently a 770

User avatar
case-ih1594
Posts: 1065
Joined: Sun May 12, 2013 10:38 am
Location: Preston

RE: Problem with case 1494

Post by case-ih1594 » Sat Mar 05, 2016 10:26 pm

Hi, it's probably worth mentioning, although you probably already know, but the combining valve must be forwards (single) to operate the link arms - when they are working normally. In other words the link arms should not work when the pump is in the rearwards position (combined) on any tractor.

User avatar
richbug
Posts: 1358
Joined: Mon Mar 22, 2010 5:32 pm
Location: Pennsylvania, United States of America

Re: RE: Problem with case 1494

Post by richbug » Sun Mar 06, 2016 12:05 am

JamesF wrote:A stuck latching valve will cause it to lift constantly

A friend of mine had this problem on a 780 and more recently a 770
But with a tandem pump you are diverting all the oil away from the selectamatic when combined. I plowed a few acres this way while playing with mine and figuring out exactly what was going on.

With a single pump you don't have the option of diverting the oil, so yes it will be constantly lifting(and opening the relief valve).
Users: 780, 1210 Bottle Opener, 1494 4wd open station with 74L, 990, 1394, 1194 High Clearance, another 1394, 1194 LCG, 1290 with 56L, 900, 885 with LS8, 885, 1190

1200, 900 projects, 780,

Parts: 3800, 1200, 1394, 1412, 1490, 770, 885, 990SEL, Red 990I,

User avatar
peterground
Posts: 8
Joined: Thu Mar 03, 2016 8:32 pm
Location: Poland

Re: RE: Problem with case 1494

Post by peterground » Sun Mar 06, 2016 9:12 pm

case-ih1594 wrote:Hi, it's probably worth mentioning, although you probably already know, but the combining valve must be forwards (single) to operate the link arms - when they are working normally. In other words the link arms should not work when the pump is in the rearwards position (combined) on any tractor.
Yeah, I know. When this lever from combining valve is forward it lifts constantly, I can't lower lift arms. They go down only when I change position of that lever to rearward.

User avatar
peterground
Posts: 8
Joined: Thu Mar 03, 2016 8:32 pm
Location: Poland

RE: Re: RE: Problem with case 1494

Post by peterground » Tue Mar 08, 2016 5:22 pm

@richbug You were right about this valve. I barelly could take him out. I cleaned him out and reinstall. Right now I must find time to reinstall whole selectamatic. Thank you very much for your help :)

Post Reply

Who is online

Users browsing this forum: No registered users and 16 guests