Lancia Motor Club

Model Technical and Interest => Fulvia => Topic started by: HBG on 18 August, 2024, 03:34:39 PM



Title: Steering box adjustment
Post by: HBG on 18 August, 2024, 03:34:39 PM
Would someone be able to direct me to a description of how to adjust free play out of the steering box please?

Thanks


Title: Re: Steering box adjustment
Post by: lancialulu on 18 August, 2024, 03:50:30 PM
I always do it with the front wheel off the ground. Best is if the suspension is normally compressed so the upper ball joint is not interfering with the feel.

Having checked if oil is in the box (!) loosen the adjuster lock nut and you will probably have to "break" the adjuster from the lock nut.

Only adjust with the steering box in straight ahead (If steering has been stripped down and thrown back it is possible that wheels may point straight ahead but the box is not . A possible check for this is to screw the adjuster in till no free play straight ahead and the steering should move progressively freer (and more play) either side of straight ahead. If going in one direction is more difficult the box is not centred. Assuming the box is centered and you have no wear in the idler or the many track rod ends you can carefully adjust the adjuter down till there is not play on the steering wheel when "waggling" back and forth and you can see the edge of the tyre moving in harmony...

Hold the adjuster and tighten the lock nut and recheck for no tightness.


Title: Re: Steering box adjustment
Post by: HBG on 18 August, 2024, 05:04:26 PM
Thanks Tim. The manual seems to list the same gear oil for this box as the gearbox. Is this correct? Would a thicker oil be better?

I'm wondering if the box has grease in it as there is an old blob beside what I think is the filler cap. Let's hope not!


Title: Re: Steering box adjustment
Post by: lancialulu on 18 August, 2024, 05:22:54 PM
normally the input shaft oil seal goes so some folk put goop in (a Landrover trick) but not really good for this steering box design.

EP90 was spec but you can try EP140. If leaking then box out!!


Title: Re: Steering box adjustment
Post by: nistri on 18 August, 2024, 08:25:12 PM
The steering idler box may also need adjustment to be done after removing the battery and (through the open slots in the battery tray floor) slackening the 13 mm locknut and turning the slotted screw with a long screwdriver. The steering idler box should have a grease nipple (early model) through which grease should be pumped. Later models miss the grease nipple and have plastic bushes that do wear and produce noticeable freeplay of the wheels. Replacing the bushes requires a special tool to open the idler box.


Title: Re: Steering box adjustment
Post by: fay66 on 18 August, 2024, 09:40:12 PM
normally the input shaft oil seal goes so some folk put goop in (a Landrover trick) but not really good for this steering box design.

EP90 was spec but you can try EP140. If leaking then box out!!
I can't think of the name offhand, but I've used an oil , that once in the steering box sets like a grease so no leaking
Brian
8227
 8)


Title: Re: Steering box adjustment
Post by: HBG on 18 August, 2024, 09:56:27 PM
The steering idler box may also need adjustment to be done after removing the battery and (through the open slots in the battery tray floor) slackening the 13 mm locknut and turning the slotted screw with a long screwdriver. The steering idler box should have a grease nipple (early model) through which grease should be pumped. Later models miss the grease nipple and have plastic bushes that do wear and produce noticeable freeplay of the wheels. Replacing the bushes requires a special tool to open the idler box.

The idler was out and had new plastic bushes at Omicron last year. Also had a new centre track rod and rod ends. I'll have a close look for play but am hoping it's just a bit of adjustment required.


Title: Re: Steering box adjustment
Post by: HBG on 20 August, 2024, 05:26:31 AM
See pic. It looks like grease in the steering box to me.

I tightened the screw about 120 degrees until i felt some resistance, which has taken up some of the slack in the steering.

A short test drive and all seems OK. Should I add grease, add Penrite Steering Box pourable grease, add oil, or do nothing?

Thanks


Title: Re: Steering box adjustment
Post by: lancialulu on 20 August, 2024, 05:39:15 AM
I would overhaul the box asap but in meantime put oil in. See how fast it comes out. Generally the input shaft seal goes so oiil at least stays halfway up. 140ep is ok…


Title: Re: Steering box adjustment
Post by: fay66 on 20 August, 2024, 11:30:41 AM
See pic. It looks like grease in the steering box to me.

I tightened the screw about 120 degrees until i felt some resistance, which has taken up some of the slack in the steering.

A short test drive and all seems OK. Should I add grease, add Penrite Steering Box pourable grease, add oil, or do nothing?

Thanks
The Penrite is what I used.


Title: Re: Steering box adjustment
Post by: lancialulu on 20 August, 2024, 11:39:56 AM
I think the box design does not respond well to grease which will tend to be scraped off the 2 gears whereas oil will cling on and re splash on the contact area.

I have had a box (will oil) that the surface hardening failed albeit after 200,000 miles but it shows the area is stressed.

 


Title: Re: Steering box adjustment
Post by: HBG on 20 August, 2024, 02:14:02 PM
Thanks all.

I'm not sure what the inside of the steering box looks like, but I'm tempted to vacuum out as much grease as I can before adding oil. I have a small wet vac that I can reduce to a straw size. No idea if it will work or whether I'll be able to access any of it other than the very neck. Will let you know.


Title: Re: Steering box adjustment
Post by: HBG on 01 September, 2024, 08:28:24 PM
Virtually nothing came out with the vac as it's not possible to fit a straw sized tube any further than maybe 25mm into the filler neck.

I decided to try the Penrite Steering Box fluid which is a flowing grease/oil. It looks like plum sauce to have with your crispy duck but doesn't taste as nice. As it's so thick it doesn't run into the box at all well. First time I added the oil I got maybe 50 ml in. I used a long zip tie, which would slide into the box to agitate the oil to help it flow in. The next day and after a drive I added some more. This I repeated over a few days, each time getting some more in.

No leaks so far and much smoother steering. I'll check the box oil one more time and do another box adjustment if needed. Very happy with the result.


Title: Re: Steering box adjustment
Post by: Richard Fridd on 02 September, 2024, 04:14:03 AM
Should it be poured in at a higher temperature?


  Richard


Title: Re: Steering box adjustment
Post by: HBG on 02 September, 2024, 05:47:21 AM
Didn't think of that.


Title: Re: Steering box adjustment
Post by: LCR1967 on 03 September, 2024, 10:04:32 AM
I immersed the bottle in hot water, and then used a large syringe with a tube attached, to reach the never regions, to fill the steering boxes