clutch slave cylinder bleeding tips?

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oxopop

clutch slave cylinder bleeding tips?

#1 Post by oxopop »

just wondering if there are any specific hints or tips for bleeding the clutch slave on my sons 1979 1500 hl? or is it a standard type procedure.thanks
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TrustNo1
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Re: clutch slave cylinder bleeding tips?

#2 Post by TrustNo1 »

Standard bleeding procedures apply.
The 1500 slave is easy enough to get to from underneath the car.
Some people are like Slinky's, they serve no real purpose in life but bring a smile to your face when you push them down the stairs.
stokieat75
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Re: clutch slave cylinder bleeding tips?

#3 Post by stokieat75 »

The way I have done mine in the past is to use a gunsons easiblled that uses pressure off the spare tyre to push the fluid through and at the same time pump the pedal a few times as I have found that air can get trapped in the m/cyl which needs removal by pumping the pedal as well. If you can get the slave cyl off from underneath and leave it connected to the hydraulic pipe and raise it into the engine compartment and bleed it that way as that ensures all the air is removed.
Richard the old one
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Re: clutch slave cylinder bleeding tips?

#4 Post by Richard the old one »

I would recommend, as previously suggested, take the slave cylinder off and hold it at an angle in the engine compartment when you bleed it to ensure all the air is removed from it.

I did this for a friend after his local garage had changed most parts of the clutch hydralics and could not sort out why the system was not working.
Jon Tilson
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Re: clutch slave cylinder bleeding tips?

#5 Post by Jon Tilson »

or you can jack up teh rear of the car instead of the front...:-)

Bleed screw must be highest point in slave to avoid air bubble.

Jonners
Note from Admin: sadly Jon passed away in February 2018 but his humour and wealth of knowledge will be fondly remembered by all. RIP Jonners.
oxopop

Re: clutch slave cylinder bleeding tips?

#6 Post by oxopop »

Thanks guys much appreciated
triplesfanatic

Re: clutch slave cylinder bleeding tips?

#7 Post by triplesfanatic »

Just in case you havn't done it yet but back bleeding is the best way and it's very easy.
It is what's often done on bikes when you're fighting gravity to get rid of the air (a bit like you are on the Sprint!). Anyway, a summary from a previous description I gave.

What you need:
1. 100ml plastic syringe (~£4 inc. postage from ebay)
2. piece of pipe to go on end of syringe and attach to bleed nipple (~10-15cm fine)

Instructions:
i) Push one end of pipe onto syringe
ii) Suck 100ml of new brake fluid into syringe via pipe
iii) Lie under car (which must be on axle stands or ramps) & undo bleed nipple
iv) push free end of pipe over nipple (must be air tight fit)
v) force fluid up into (empty) master using syringe and tighten bleed nipple
vi) top up reservoir if necessary

Note that on the Sprint you must force piston to back of slave cylinder (using screwdriver against clutch housing) for the entire duration of bleeding i.e until you've tightened up bleed nipple. Don't know on 1500.

You will need to pump pedal a couple of times to move the piston to correct location in slave.

Dave
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