Mk1 c5 5hp20 oil level

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cornesoutafrica
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Mk1 c5 5hp20 oil level

Post by cornesoutafrica »

Hi everyone.

I did a search on the refill or rather the flush procedure on these boxes. Something that changes from one writeup to the other is the oil level plug...

Some writeups says it is on the rear of the gearbox. Close to the driveshaft and other says it is at the front. Is there any clarification as to which is correct? On my gearbox at the rear is a blanking plate. Clearly there is a hole. At the front is a torx bolt somewhere in the halfway mark between the top and bottom of gearbox.


Which is the correct one to make sure I refill the gearbox to the proper level?

Thanks
Corne

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GiveMeABreak
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Re: Mk1 c5 5hp20 oil level

Post by GiveMeABreak »

Hi Corne

Here's the complete procedure for this specific HP20 Box:

Recommended Tools:
Corne Gear A.PNG
Corne Gear A.PNG (52.54 KiB) Viewed 61 times
Corne Gear B.PNG
Corne Gear B.PNG (86.09 KiB) Viewed 61 times
[1] hose clip pliers 4517-T (kit 4507-T).[2] Topping up Cylinder (-).0341.
[3] Special Adaptor (-).0341 B.
Refilling

Oil capacities
  • Dry gearbox oil capacity: 7,7 litres (minimum) 8,3 litres (max.).
  • Oil remaining after draining: 4,7 litres (minimum) 5,3 litres (max.).
  • Quantity of oil to be replaced: 3 litres (approx.).
Corne Gear C.PNG
Remove:
  • The air filter casing
  • The air vent assembly ( 1) and (2) of the gearbox Using tool [1]
Corne Gear D.PNG
Corne Gear D.PNG (106.5 KiB) Viewed 61 times
Fill or top up Using tools [2] and [3].

Refit the metal part ( 1) of the air vent Using a Ø 18 mm drift and a hammer.
Clip the plastic part ( 2) onto the air vent.
N.B.: The gearbox air vent is available from Citroen Parts.

Topping up the oil level
Prior conditions
  • Vehicle level, Handbrake off.
  • Engine idling, without consumers (air conditioning, heating, etc).
  • Check that the gearbox is not in downgrade mode Using a diagnostic tool.
  • Apply the brakes firmly and move the lever through the various selector positions.
  • Lever in position P.
The check is performed when the oil has reached a temperature of 55°C ± 1°C Using a diagnostic tool.

Check the oil level
Corne Gear E.PNG
Corne Gear E.PNG (79.65 KiB) Viewed 61 times
Remove the oil level plug ( 3).

Draining of oil via the oil level hole
When the oil temperature reaches 60°C ± 1°C, replace the filler plug (3).

N.B.: The oil level is correct.

Tighten the cap (3) to 2,5 daNm.

No draining of oil via the oil level hole
  • Refit the oil level plug ( 3).
  • Stop the engine.
  • Remove the gearbox air vent assembly Using tool [1].
  • Add 0,5 additional litres of oil in the gearbox Using tools [2] and [3].
  • Repeat the top-up procedure.
  • Remove tools [ 2] and [3].
  • Refit the metal part ( 1) of the air vent Using a Ø 18 mm drift and a hammer.
  • Clip the plastic part ( 2) onto the air vent.
  • Refit the air filter housing.

cornesoutafrica
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Re: Mk1 c5 5hp20 oil level

Post by cornesoutafrica »

Thanks Marc.

I appreciate it. Ok. The oil level hole. I am trying to figure out where it is situated. Seems like at the back of the gearbox close to the exhaust downpipe?

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GiveMeABreak
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Re: Mk1 c5 5hp20 oil level

Post by GiveMeABreak »

I've never had one of these Corne, so couldn't tell you for sure, but it looks like that's the location from the picture. :-D

cornesoutafrica
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Re: Mk1 c5 5hp20 oil level

Post by cornesoutafrica »

Haha. Well. If I find it I will be sure to put a picture here for future reference

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GiveMeABreak
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Re: Mk1 c5 5hp20 oil level

Post by GiveMeABreak »

Sounds like a plan and will compliment the procedure - I'll add it into my post for completeness.

cornesoutafrica
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Re: Mk1 c5 5hp20 oil level

Post by cornesoutafrica »

Will it affect the results if the car is kept in high position? I do not have access to a lift. So I need to make other plans and keep it in mind that the car must be level

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GiveMeABreak
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Re: Mk1 c5 5hp20 oil level

Post by GiveMeABreak »

That should make no difference - being level is the key factor here to ensure the excess oil drains out, leaving the correct amount.

Time to go get the spirit level!

cornesoutafrica
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Re: Mk1 c5 5hp20 oil level

Post by cornesoutafrica »

Success.

Gearbox oil changed in correct sequence. And I saw the level plug. Tried to take the picture exactly as in the diagram. Uses a 6mm allen key to loosen the level plug.

Ended up putting in around 3 liter which is what I presume is what needs to come out. Oil wasn’t that dirty. Next gearbox oil change in a month.

I used ravenol 5/4HP fluid which according to their website is the correct replacement oil. Citroen is wayout with their price. So this is next best. A friend uses it and all is good after few thousand miles. So. Let’s see...

Thanks for the Help Marc.

Hope picture helps
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GiveMeABreak
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Re: Mk1 c5 5hp20 oil level

Post by GiveMeABreak »

Thanks for the pictures, that's great Corne. Pleased that's another job done well!