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Topped off the gearbox - now a loud whine? Fixed!

Posted by socalmgfan

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Topped off the gearbox - now a loud whine? Fixed! #1
socalmgfan Greg Azeltine Southern California, USA 1976 MG MGB "Jessie"	Posted: August 19, 2012 03:15PM Registered: 4 years ago Posts: 413

I filled the gearbox - fluid was down. Halfway down the block, it started whining! what'sm up? FYI - no OD

Edited 1 time(s). Last edit at 08/31/2012 12:42PM by socalmgfan.

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Re: Topped off the gearbox - now a loud whine? #2
tuner blue 73 mgb Brad Dowler Anola, Manitoba, Canada 1973 MG MGB	Posted: August 19, 2012 03:40PM Registered: 3 years ago Posts: 267

Mine would whine/jingle something fierce. The faster I went, the louder it would get. I put in a new shift lever bush, that helped a little. It was only then that I found that the shift dampener, spring, and washer were missing. Once those were installed, no more noise.

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Re: Topped off the gearbox - now a loud whine? #3
socalmgfan Greg Azeltine Southern California, USA 1976 MG MGB "Jessie"	Posted: August 19, 2012 03:44PM Registered: 4 years ago Posts: 413

I had no noise before I added the oil

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Re: Topped off the gearbox - now a loud whine? #4
cfrantz Chris Frantz Mississippi, USA 1957 MG MGA 1964 MG MGB	Posted: August 19, 2012 03:55PM Registered: 4 years ago Posts: 3,502

What type of oil did you use? Different type from before?

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Re: Topped off the gearbox - now a loud whine? #5
churchill1965 Andrew W Oxford, United Kingdom 1977 MG MGB	Posted: August 19, 2012 04:05PM Registered: 10 months ago Posts: 25

Greg, it's quite rare for the 'box to whine...was it definitely the 'box and not the diff'?? If 'box, go back and check oil level again as sometimes it takes a while for the oil to settle and therefore the 'box may still be low on oil. This normlly shows itself as a slightly tighter gearchange and noisier 'box.

You wrote "FYI - no OD", are you saying the 'box is a non-OD unit, or, that the OD unit is not functioning? If not functioning it's the same as above. Where the two units are sharing the same oil, the OD does not like running on low oil.

As a note, have you completely drained all oil from the gearbox recently? If not, it is worth doing this. Really check around drain hole for metal particles. Stick finger into 'box and clear any muck. Re-fit drain plug and then clean 'box casing with methylated spirits on a rag. Check quality of old oil and then fill with correct grade of new engine oil; fully up to top of side filling hole.

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Re: Topped off the gearbox - now a loud whine? #6
socalmgfan Greg Azeltine Southern California, USA 1976 MG MGB "Jessie"	Posted: August 19, 2012 04:16PM Registered: 4 years ago Posts: 413

Thanks for the replies. It's the gearbox, not the diff. I refilled with 20W50, based on the Haynes manual. I was using straight 30W before. I put around 1.5 qts in and still didn'd get it up to the the side fill hole. My fluid pump broke and I stoppted filling. I do not have an overdrive.

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Re: Topped off the gearbox - now a loud whine? #7
rdgreen Robert Green Adelaide, Australia 1975 MG MGB MkIII	Posted: August 19, 2012 05:35PM Registered: 1 year ago Posts: 735

As per Andrew. It's unlikely that the problem started by topping up the gearbox unless you have used the wrong oil entirely, and by what you say that didn't happen. One and a half liters is a fair amount to add, especially if that didn't bring it up to the correct level, hope you haven't damaged anything inside. Change the oil entirely and make sure it is at the correct level.
Are you sure the whining isn't coming from the passengers seat grinning smiley

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Re: Topped off the gearbox - now a loud whine? #8
socalmgfan Greg Azeltine Southern California, USA 1976 MG MGB "Jessie"	Posted: August 19, 2012 05:46PM Registered: 4 years ago Posts: 413

I'll drain it and check the oil. The refill. Any recommendations regarding the easiest way to refill through the side hole? There's no room to put a funnel inside the tunnel. Maybe run a hose from the engine compartment?

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Re: Topped off the gearbox - now a loud whine? #9
jramstad Jeff Ramstad North Vancouver, B.C., Canada 1974 MG MGB MkIII	Posted: August 19, 2012 06:14PM Registered: 1 year ago Posts: 407

I use a short hose on funnel for refilling from the passenger tunnel and a turkey baster to top up to the mark.

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Re: Topped off the gearbox - now a loud whine? #10
Brittsonly Dean Hickenlooper Darien, Illinois, USA	Posted: August 19, 2012 09:21PM Registered: 1 year ago Posts: 19

Autozone has a cylinder pump kind of like a large syringe for about 18 bucks. Holds about a pint at a time. Makes it easy and with minimal mess. Good luck.

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Re: Topped off the gearbox - now a loud whine? #11
Boatin John Kinnane Caringbah, Sydney, Australia 1964 MG MGB MkI 1979 MG MGB MkIII "Molly" 2006 Volkswagen T5 2.5 Turbo Diesel "Graf Zepplin"	Posted: August 19, 2012 11:07PM Registered: 4 years ago Posts: 930

I use a funnel and pipe to refill my gearbox. Works quite well and only takes 4-5 hours to fill.

LOL

Regards

John Kinnane

'Molly' '79 Tourer

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Re: Topped off the gearbox - now a loud whine? #12
pooch2 aussie 1968 MK 1 By the Beach, south coast NSW, Australia	Posted: August 20, 2012 01:10AM Registered: 4 years ago Posts: 4,164

Soft drink bottle with a hole punched in lid.

Clear pvc hose and fill and squeeze.

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Re: Topped off the gearbox - now a loud whine? #13
churchill1965 Andrew W Oxford, United Kingdom 1977 MG MGB	Posted: August 20, 2012 04:52AM Registered: 10 months ago Posts: 25

Gents, whilst there's little space between gearbox case and tunnel, there is a very easy way to fill gearbox.

1. Run a long piece of clear plastic tube from the right hand side of the engine bay [near distributor] and into gearbox re-fill hole. Take a 1ltr plastic oil bottle.
2. Pearce a hole of the correct size for the upper part of the plastic tube to slide into the oil bottle's lid and insert about 3" - Fill 1ltr bottle with oil and fit lid.
3. Turn bottle upside down and simply gently squeeze the oil into the gearbox. Clear plastic tube is best to show oil flow.
4. Re-fill the bottle Xno times until correct oil level achieved [depending upon year of gearbox] [add 3pints if fitted with an OD].
5. There'll be a little over-spill towards the end of filling so place oil tray/cardboad on garage floor to catch any drips.
6. Go make a cup of tea for 15-20mins whilst oil is settling. Drink with Chocolate Bourbon or Custard Cream biscuits thumbs up smiley

7. Rotate propshaft to ensure oil is genuinely settled. Check oil level is correct upto the lip of the filler hole. Re-fit side filler plug and clean off any remaining oil smears.

Notes:

1. A 1/4" tube width works well. If tube too narrow the oil will take an age to re-fill.
2. You'll need to find a plastic type plug of sorts to fit to the gearbox end of the tube when removing to stop oil spilling out.
3. Using an old 1ltr plastic bottle with a lid is far easier/better than a funnel for a number of reasons. You have greater control of oil whilst filling + you are guaranteed no dirt/particles enter new oil as the bottle is closed via its' lid [very important].
4. Keep this homemade kit safe as it's very handy and costs next to nothing.

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Re: Topped off the gearbox - now a loud whine? #14
ErnieY Ernie Y Nr Cahors, France 1970 MG MGB 1976 MG MGB GT 1978 MG MGB	Posted: August 20, 2012 07:34AM Registered: 1 year ago Posts: 2,825

Here's my rapid gearbox oil filler.

Take an old plastic 5lt oil container.

Make up an adapter for the top so that you can attach a piece of common garden hose to it.

Fill the container with the required amount of oil.

Put the hose in the gearbox filler via the engine bay, or wherever you choose depending on the length of hose.

Connect the plastic container and tip to begin pouring.

Now the clever bit:

With a round tool of some sort punch a small hole somewhere in the bottom of the container.

Now get your airline and with an ordinary blow gun on it put it in the hole and GENTLY !!!! apply some pressure to the container.

The oil will be pushed through in seconds rather than hours !

My adapter pictured is for a Castrol GTX container which I can't lay my hands on at the moment so for illustrative purposed is shown with a different one. The red blob shows roughly where to punch your hole.

If you are doing the job on a regular basis you could cobble together something a bit more permanent from a metal container.

Remember I said GENTLY !

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Re: Topped off the gearbox - now a loud whine? #15
socalmgfan Greg Azeltine Southern California, USA 1976 MG MGB "Jessie"	Posted: August 20, 2012 09:53AM Registered: 4 years ago Posts: 413

So much methodology! I'll get at it next weekend - traveling this week and she'll sleep in the garage while I'm gone. I'll post the updates then. Thanks for the replies!

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Re: Topped off the gearbox - now a loud whine? #16
MGsfor3Generations Grant MacKay Concord, NC, USA 1971 MG MGB	Posted: August 20, 2012 11:41AM Registered: 5 years ago Posts: 371

I've had good luck with one of these:
Harbor Freight - Multi Use Transfer Pump

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Re: Topped off the gearbox - now a loud whine? #17
78mgb White Wonder 78mgb Minnesota, USA 1978 MG MGB	Posted: August 20, 2012 11:52AM Registered: 7 years ago Posts: 1,358

In reply to # 2149406 by socalmgfan I'll drain it and check the oil. The refill. Any recommendations regarding the easiest way to refill through the side hole? There's no room to put a funnel inside the tunnel. Maybe run a hose from the engine compartment?

That is the way that I did it. Just a long hose with a funnel on the top. Put a pan under the tyranny because you need to keep adding until overflows. I used 20w50. Just pour it in slow and wait for the funnel to empty. It took quite awhile because the hose took up much of the hole and the air inside has to escape.

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Re: Topped off the gearbox - now a loud whine? Fixed! #18
socalmgfan Greg Azeltine Southern California, USA 1976 MG MGB "Jessie"	Posted: August 31, 2012 12:54PM Registered: 4 years ago Posts: 413

I successfully used the hose from the engine compartment method. I used clear vinyl tubing purchased at Lowes and available at any big box or hardware store. I filled the funnel and then let the hose drain into the gearbox and let air escape back up the hose, then repeated until oil starting draining from the fill hole. Took a test drive and all is well.

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