Thread: help in taking off carriage (hafco 960b).

You can remove the carriage by undoing the apron and gibs then lifting straight up. Bit of weight there but not gutbusting. Make sure this is done near the ends so the screws and shafts so they don't bend under the weight of the apron or better yet support the apron.

If your 960 is like most other 960's the apron leaks so now would be a good time to fix it.
In that case I'd remove all screws and shaft first, then the apron and then the carriage.
Re-assembly is the reverse.

Garry

As Garry says you can remove it fairly easily... I would first remove the tailstock, then move the carriage to the tailstock end of the bed so you reduce the risk of bending the leadscrew/feedscrew when splitting the carriage from the apron and gives the apron better support...

The carriage will have a retainer at the back... Remove it.... You will also have to remove the saddle lock bolt (probably just an allen bolt) I would remove the cross slide.... Then remove the bolts that hold the carriage to the apron... On some machines they have locating dowels so it can sometimes be hard to get the two parts apart....

The saddle will not weigh much on it's own... I would guess 6-7kg... The one on my AL1000C was pretty light...

Thanks for the tips, seems easier than removing the leadscrew and other shafts.
when replacing do the gibs need to be readjusted, or is the carriage non adjustable.

must be lucky, the apron doesn't leak.

next step will be to eventually replace all bearings with Japanese bearings.

Only gibs are on the cross slide and top slide... Saddle is held on by gravity and the V Way like the tailstock..

Originally Posted by .RC.

Only gibs are on the cross slide and top slide... Saddle is held on by gravity and the V Way like the tailstock..

RC, there is or should be a gib on the underside of the rear saddle arms to stop the saddle lifting up under a cut.

Lather I cant remember the clearance for this gib maybe .015mm iirc best to stick a feeler gauge in there 1st. With respect to your bearings, mine are Koyo Japan but standard grade, guessing yours are the same. If you want the precision grade bearings brace yourself 1st before you get a quote because they're horrendously dear. I'd be looking at stiffening up the base or making a new base before that. That would make a bigger difference.

Garry

That would not be a gib, but a retainer...

Originally Posted by .RC.

That would not be a gib, but a retainer...

HI Richard,
I am not sure if any of the 'keys" are Gibs.
A Gib has a taper like a wedge anything else is a lump of material taking up a free space for clamping and tightening.
I use taper gib keys and taper gib head keys and just plain gibs on the Steam Engines.
If I could work out how you blokes put circles and arrows on your photos I would show you what I mean.
It can only be called a Gib if it has a taper

Phil

Hi Phil, Gibs are not always tapered... A classic example of this would be the cross slide on a Hercus 260... The gib on it is adjusted by 4 or 5 set screws pushing the straight gib against the dovetail... My shaper has a similar arrangement on the ram and my milling machine has the same arrangement on it's Z axis ways..

Hi Richard
I know what you are saying its just my job is all about the history.
"Back in the day" a gib only ever had a taper. Nowadays it seems everything that is designed to take up play or hold something together is called a gib. During my apprenticeship I always had to use the correct terminology or risk a swift foot up the...!! I apologise in advance.
After all that, you are right in what you are saying.

Phil

Originally Posted by Steamwhisperer

If I could work out how you blokes put circles and arrows on your photos I would show you what I mean.

Phil.

I think most of us just use a program called “Paint” You can search your computer, or just go All Programs – Accessories- Paint.

Save your picture, then open it in Paint. Its pretty easy once you have a play with it, then save the modified picture again.

Regards.
The other Phil.

Thanks Phil
Stuart said exactly the same thing so I am going to give it a shot tonight

The other other Phil

Originally Posted by Steamwhisperer

Hi Richard
I know what you are saying its just my job is all about the history.
"Back in the day" a gib only ever had a taper. Nowadays it seems everything that is designed to take up play or hold something together is called a gib. During my apprenticeship I always had to use the correct terminology or risk a swift foot up the...!! I apologise in advance.
After all that, you are right in what you are saying.

Phil

I know what you're saying about the foot up the khyber. My masters were old, english and occasionally cranky, and old, scotish, and nearly always cranky. If you didn't say it how they wanted they'd be quick to correct you. It took about 2 years for me to remove some of the pecularly Scots and Yorkshire inflexions from my speech.


Anyway we were taught that in regards to machines, that gibs were used for controlling fit in linear bearing surfaces sometimes with the use of a clamp as in a saddle of a lathe. With respect to the keys I was told that a taper gib key was a taper key with a head on the end for easy extraction. Curiously a cat that has it gullens cut out is a gib too, I was informed of that at the start of my instruction on gibs.

If there is one thing I know about the f+m jargon it that's the italians and russians are the most consistent nearly everything starts with a f_ck and ends that way as well. Those f_ckers have no trouble at all understanding each other.

To the OP be it a retainer or a gib it needs to come off in order to remove the saddle but measure the clearance first.

Garry

Hi Garry
Both of mine were from Liverpool and I still can't get that accent out of my head. The first 3 months were working out what they were saying. The first thing I learnt was that I was a scourse git. All I could hear was gasket. Second thing I learnt was what a gib was. Lol

Phil

Originally Posted by Steamwhisperer

Hi Garry
Both of mine were from Liverpool and I still can't get that accent out of my head. The first 3 months were working out what they were saying. The first thing I learnt was that I was a scourse git. All I could hear was gasket. Second thing I learnt was what a gib was. Lol

Phil

brought a grin to my dial .
the bloke that taught me a lot of what i know workshop wise was my dad .
he was a marine engineer , born yorkshire ( same as me ) and served his time in the ship yards ( smiths docks )and at sea on merchant ships in the early 50's , but he had a lot of scot in him too and a hobby of his was accents from all over the uk and he could drop into any of them any time without warning .it was like working with 30 different people but it were just the 2 of us .
geeze i miss the old b(*^%^&%.

john ramsay