Steering box/pump leak?

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14platoon

Active Member
Posts
241
Location
Kent
Hello
Defender ex MOD 1992 2.5n/a Diesel
I have had a leak from the power steering for some time now. It’s now getting pretty bad so I’m looking to fix it.
I’m quite competent at fixing stuff but I’ve never touched power steering before, most of my old cars didn’t have it.
Can someone explain how the system works in layman’s turns for me. I initially thought the steering box contained everything so I was just going to replace it but now I’m unsure if it’s the pump and if they’re joined or separate etc etc.
The fluid is dripping from the lowest point of the steering arm.
Thanks
 
the shaft the drop arm is secured to is called the sector shaft , the seal is easy enough to change once you get drop arm off which can be exceedingly tight as it sits on a slow taper, youd remove dirt seal then internal circlip , place container underneath start engine and turn steering wheel to a lock it will blow seal out, you can ther fit new seal steel backingh washer then circlip ,but the big problem is shaft is usually quite corroded and pitted making seal life quite short lived , that can be sorted with a speedi sleeve, once done whether its that or another box bleeding isnt necessary just fill res keep topped up and working steering lock to lock
 
the shaft the drop arm is secured to is called the sector shaft , the seal is easy enough to change once you get drop arm off which can be exceedingly tight as it sits on a slow taper, youd remove dirt seal then internal circlip , place container underneath start engine and turn steering wheel to a lock it will blow seal out, you can ther fit new seal steel backingh washer then circlip ,but the big problem is shaft is usually quite corroded and pitted making seal life quite short lived , that can be sorted with a speedi sleeve, once done whether its that or another box bleeding isnt necessary just fill res keep topped up and working steering lock to lock
Thanks James
This sounds like a plan. The fluid does appear to be coming from the upper arm area and running down, so I’m guessing the upper arm area is where the sector shaft seal is as you’ve described.
 
After a bit if research I'll probably just change the box. To save hassle I'll probably put a new drop arm on as the old one is probably a nightmare to get off. The replacement won't have an arm on it.
Has anyone got an instructable for this job? in particular I'm looking at alignment of the drop arm and the box of possible.
 
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