Technical Gear box oil

[Ziggy122]

You know when a diff explodes - one heck of a bang !!!

A good bang it did indead
My God it pulled - It jammed - Car swerved to the Right - i yanked wheel to the Left
BANG! Car Stalled - i just rolled to where i park (about 5meters away) and got out and i met the smell!

the 2nd diff has exploded but it had done so internally - so no bang - or it was going to very shortly thats for sure

ziggy

 

[tahseen salman]

sorry for late share but in fact i need to ask about the gearbox photo , Mr Ziggy or any body who can help , are you sure the screw in the blue circle is for drain the gearbox oil???
if its true , i remembered that i remove it for 1 minute with out any oil drop come out from it ?so what to do to drain the oil?
thank you every body

 

[fingers99]

Fill it up, slowly, through the filler/check level 12mm allen plug. When it starts to come out again, it's full.

 

[blu73]

:yeahthat: unless you have a seriously high mileage there is no need to drain it all, just check the level and top up as required.

 

[bluejohn125]

Changing your gearbox / diff oil is one of the easiest things to do on a car like the punto, once you are underneath it. The oil does deteriorate and disappear over time and it is only the newer cars with higher spec synthetic oils that claim to be good for the life of the car.

In reality any car over 10 years old will benefit from a change, gearbox action will be smoother and there should be less drag.

The drain plug and filler plug are blindingly obvious to anyone who has done the job on any car before, and just the same as an oil change except for filling through the side hole until the excess new oil starts dribbling out - no dipstick needed.

And you will not always get the same amount out as you should put in.

 

[fostertom]

Double check the oil spec - for decades 124s ended up with EP90 because Haynes wrongly said that, while early Fiat specs said 20/50 engine oil - for a gearbox! Some of the guys even suggest ATF. The lighter oil makes an already excellent gearchange even better. However Lada recommended EP90 for their same-design gearbox.

 

[Elxpunto90]

Hi can anybody tell me what the plastic lid bit is on top of the gearbox next to the speedo sensor is it the filler for gearbox fluid or is it a vent

 

[fingers99]

It's a breather -- or vent. On no account use it to fill the box -- you'll overfill it muchly.

The 12mm allen plug on the front face of the gearbox is the filler and level check -- use one of those bottles with bendy tubes most gearbox oil comes in.

 

[Elxpunto90]

I've got one of those ones big like oil type containers I suppose a funnel with a piece of tubing running up above the engine would work just have to keep an eye out for overflowing

Also if I remove clutch from car do I have to drain fluid from gearbox or does it stay in there

And finally if I remove the driveshaft of the passenger side to remove gearbox will it ouze out with gearbox fluid

 

[fingers99]

To my mind, it's plain daft to remove the whole driveshaft anyway. Just seperate them at the inner CV joint (undo the innermost clip on the gaitor). I'd seperate both in this fashion.

The cups are hollow, so if you completely remove the shafts the oil will come out. Everywhere.

Keep the box upright and it should stay in there.

 

[blu73]

:yeahthat: there is a breather on the box so it can come out but it won't if you keep it vaguely upright.

 

[flisko]

about to change gearbox oil, it supposedly was never changed, got 2 cans of
HIGHTEC TOPGEAR FE SAE 75W-80 S

in a container that was opened like a year or two ago but cap firmly sealed and stored in a warm room, can i still use it?

 

[fingers99]

Should be fine. Gear and engine oils go off very slowly (unlike brake fluid).

 

[Noddy]

The issue with brake fluid is that when water gets in there isnt sufficient heat or vents to remove it and as such it reduces youre breaking efficiency (to the point where the fluid can boil and not work). Engine and gearboxs both have much more heat and vents so the water will seperate from the oil and vent off (provided you take it on a long enough run to let the engine get up to temp).

 

[flisko]

about to change gearbox oil, it supposedly was never changed, got 2 cans of
HIGHTEC TOPGEAR FE SAE 75W-80 S

in a container that was opened like a year or two ago but cap firmly sealed and stored in a warm room, can i still use it?

little mistake this is the oil i got

probably same s.h.it

 

[flisko]

goblin soup

 

[flisko]

i feel no difference in changing gears with new oil, maybe air in clutch cylinder?

 

[fingers99]

Could be.

 

[flisko]

where ze hell is clutch slave cylinder

 

[flisko]

it appears i dont even have one