seeking images of 990 hydraulic valves

This is for Members to post their own videos or even videos they find on other websites that are David Brown related. Ideally DB but also Member's videos of working with tractors etc. Inappropriate videos will be deleted and the Member posting them may be banned from this Forum.

Moderators: Segrie61, admin

Post Reply
Posts: 15
Joined: Mon May 29, 2017 2:23 pm
Location: NR9 3LG

seeking images of 990 hydraulic valves

Post by Wheelrim » Sun Mar 15, 2020 6:37 pm

My 1968 990 selectamatic is almost restored.

The hydraulics have suffered from water entering the oil whilst exposed in a field for about 15 years.
The rubber seals at the base of the gear levers had perished.

I've flushed the 'wateroil/ mayonaise' sludge and replaced the oil in the gearbox twice.
It lift arms still do not move.
The ram can be moved with gentle pushing, so no oil is reaching it.

I consider that when I read repair and maintenance instructions I'm understanding the basic requirements and feel I need to undertake cleaning of valves.

My concern is that I would like to see clear images of;
Latching, spool, hold, non return, etc valves.

Yesturday I visited Stuart Gibbard's open day event near Spalding hoping to obtain a suitable parts catalogue or similar.
Unfortunately after he and I spent a considerable time seaching a fabulous range of possible items, none were found that I could use.

Is there somewhere where I can buy, borrow or see images of the valves?
Or does anyone have images that they can scan and send to me?


Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest