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Guide: Renewing a gear shifter seal
How to replace leaking gear shifter seal.
Published by Jarmot
28-08-2018
Difficulty Level: 3

User Rated:
Difficulty Level: 2

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Guide: Renewing a gear shifter seal

My Grande Punto 2008 1,2 gear box looked like this:

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I thought that drive shaft seal was leaking but I was advised it probably was a gear shift seal leak. It actually was the case:

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I ordered a new seal from eBay (30 ). Replacing an old seal was about three hours work and it were pretty simple job. Only tools needed were 10 mm spanner, 13 mm socket, two flat screw drivers, a punch, a hammer and sealant glue.

Take battery terminals off (10 mm spanner).

Remove battery (13 mm socket),

Remove the battery tray (13 mm socket):

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Remove clutch slave cylinder (13 mm socket):

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Open ground cable nut (13 mm socket) and remove reverse light switch connector:

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Gear cables can be removed with one or two screwdrivers:

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Gear shifter is attached with five screws (13 mm socket):

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Gear shifter removed:

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Remove lock pin with a punch:

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Remove a seeger ring with a screw driver:

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Gear shifter disassembled:

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Remove old seal carefully with a screw driver and tap a new seal in place:

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Assembly in reverse order. Use sealant when attaching gear shifter to gear box:

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Renew gear oil.
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Old 28-08-2018   #1
Join Date: Apr 2018
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Bhutan 
Cool Re: Guide: Renewing a gear shifter seal

It probably helps if gearbox is in Neutral during procedure.
Check a vent (plastic cap on top of the shifter casing) if it's clogged.

Consider using proper dirt wipers/scrapers (like in hydraulic actuator rods).
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There is a wide range of height in wipers (with same diameters, they can be "tall"), rotary seals are pretty much the same ("short"). It may help to scrape more dirt.
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Mind there are also different lips shapes available.
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Finally, consider adding some kind of rubber boot. Simple "plug and play"...
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Or modification (just an idea - not verified yet).
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Small things, big trouble. Pay attention while installing this 2 parts. If not done correctly, they can fall into the gearbox and cause serious damage.
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Last edited by GrandePunto PL; 28-08-2018 at 20:00. Reason: Damage warning. Pay attention to details.
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Old 02-09-2018   #2
Join Date: Apr 2018
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Bhutan 
Exclamation Re: Guide: Renewing a gear shifter seal

Most important information is missing: rotary "oil" seal size (20x30x7).
It's a standard machinery/industrial part - you don't have to buy it from automotive suppliers.
And, it should not cost so much (30 Euros is a massive rip-off).

Why there's no editing possible? Or combining two posts (from same user) automatically?
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Last edited by GrandePunto PL; 02-09-2018 at 00:28. Reason: Stupid forum! No editing or joining two posts?
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Old 1 Week Ago   #3
Join Date: Oct 2017
Location: Edinburgh Scotland
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Re: Guide: Renewing a gear shifter seal

My older boy has left his '12 plate Punto (1.4 8 valve) for the week whilst he's away on a little family holiday. Primarily it's so I can do a leisurely big service on it and try to sort out the low biting point on the clutch pedal and N/S drive shaft oil leak, oh and the slow speed doesn't work on the radiator fan. I'll probably find other "stuff" too.

Anyway I took the bus across town this morning to his house and drove it back. I'm hoping the clutch problem is air in the system - certainly feels like air. I had her up on stands by early afternoon to get a better look at that N/S drive shaft seal (the one on the gearbox) guess what/ it's not the driveshaft seal! it's very obviously this selector shaft seal. Looks just like the first and second of the pictures you've posted in the main sequence.

This left me feeling a little anxious because gearboxes generally have a nasty habit of containing springs and ball bearings and other stuff which are just waiting for the opportunity to go "ping" and shoot off in all directions at great speed never to be seen again! Having now read this, your guide, I'm emboldened to have a go myself.

Question - that pin just drives right through and out the other side? there's plenty of room for it? doesn't foul the casing does it?

I rang our local main dealer who can get the seal within 24 hours and want's around 6.00 plus VAT. I'll get a new roll pin too I think. (the thought of the old one coming loose and falling into the gear clusters just fills me with horror). So getting it ordered is tomorrow's first job.

There's only one thing niggling away at me - Your guide is for the 1.2 and my boy's is a 1.4. Visually looks the same as far as I can see, but is it? (the same I mean?) Anyone able to reassure me? I'll probably be tackling it on Thursday if the seal arrives as promised. And thanks again for your splendid guide, I think I might have chickened out and handed it over to our local Fiat indy if I hadn't come across it!

PS. Forgot to add that, Darn it, I was so sure it was the driveshaft seal that I ordered one with my last S4p order for the Panda!
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Last edited by Pugglt Auld Jock; 1 Week Ago at 20:36. Reason: add PS
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