Crown CG18S:
CG18S - no brakes

Hi,
came in this morning and over the weekend seems the brakes have disappeared. Pedal goes to the floor, and only very slight braking available.

Had a quick look, plenty of fluid in the reservoir.
Just a little bit of weeping evident in the general area of the MC, not much.

Can anyone help out with maybe a service manual or any tips?
Seen this prob before?
Got a source for a MC or a rebuild kit if needed?

I wouldn't think it would suddenly need significant brake adjustment out of the blue over the weekend. Last time it was serviced was only a couple of months ago. It seemed fine on Friday.

Any help or tips will be greatly appreciated!!!
:)
  • Posted 22 Aug 2016 09:59
  • Discussion started by merlin_z
  • QLD
trust no-one
check everything
Showing items 1 - 4 of 4 results.
looks like you were on the money, mate.

system flushed, new master cyl, all good now.

:)
  • Posted 16 Sep 2016 08:04
  • Reply by merlin_z
  • QLD
It its had dot4 or dot5 instead of the VG10 thats supposed to be used then yes, you could well have ruined seals in the master cylinder and also possibly the axle pistons. Common mistake for non-Crown techs to make or when 'the local mechanic does my servicing'...it usually ends in a costly bill with the latter. Oil cooled disc brakes are non-adjustable so you can rule that out.
  • Posted 2 Sep 2016 20:51
  • Modified 2 Sep 2016 20:54 by poster
  • Reply by techno_nz
  • Canterbury, New Zealand
G'day,
thanks for your reply

There's a note written on the dash in white - oil cooled brakes.
There's nothing on the side of the bonnet aside from the model number.

Thing is, it was serviced a few months ago, last Friday afternoon it was fine, Monday morning - no brakes. I've asked the guys who were here on Saturday, nothing happened to it.

I haven't seen any puddles of brake fluid lying around anywhere, and the reservoir has plenty in it.

If the last guy put the wrong fluid in [dot 4 vs dot 5, etc] would the seals just suddenly fail like that?
  • Posted 26 Aug 2016 15:53
  • Modified 26 Aug 2016 15:54 by poster
  • Reply by merlin_z
  • QLD
trust no-one
check everything
Depends if its drum or oil-cooled disc brakes. What does it say on the side of the bonnet, does it have odb or oil-cooled disc brake labels?

For example, if it has oil-cooled disc brakes and the person who serviced it put gear oil in the front axle you won't have any slave cylinder piston seals left as the gear oil reacts with them. You also would lose all your fluid though...more info required really.
  • Posted 26 Aug 2016 10:13
  • Reply by techno_nz
  • Canterbury, New Zealand

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