Thread: All p38 owners up to mid 1999 please read.

Did the repair yesterday. Anyone find that the pedal is a LOT more progressive?? It worries me i may have more air in the system. Havent driven it out of the driveway yet. Think i may do another bleed, but am curious if others have found a completely different feel to their pedal?

Ok started doing mine today, have got as far as getting the modulator out and just letting it drain out properly. Will get into it tomorrow. Biggest drama I have had so far is that when the idiots put the gas on they routed the gas line straight on top of the resovoir and it was a pain to get it out. So far instructions have been pretty well spot on.
Fingers crossed for the rest of it.
Shano

Finished bleeding for a second time, it really is a two man job, then it is done properly. Pedal feels better. Now ive got to do the accumulator. Arghh! My plastic washers didnt break with fingers though, however as soon as i put the pliers and the slightest of pressure they disintegrated.

I have bled my brakes about 5 times since I did the repair. The reason being that I felt the ABS pump was cycling too frequently and that there was air somewhere in the system. The pedal was good, but the pump was cutting in too pften and for too long. Incremental improvements were seen after each bleed.

It is quite possible to do it by yourself. On the bleed valve I have one of those one way bleed tubes that has a ball valve in it - these are available from SCA for about $15 and prevent the fluid from going back into the valve.

On the reservoir side I have a the pressure bleeder which gets its pressure from the front drivers side tyre (which is let down to about 20 psi).

It takes me about an hour and a half and 2 - 3 litres of brake fluid.

Dave

Originally Posted by Aussie

I'd only had my 99model P38 about 2 weeks, coming home with the Wife in Peak hour along St kilda road when I lost all braking. Foot went straight to the floor. I was lucky as it was still under warranty, so I limped to the mother-in-laws house just around the corner (using the handbrake). The dealer picked it up and replaced the faulty part. I am assuming my little piece of plastic broke....

Hi,
What is the plastic bit that broke? I'm looking at buying a 97 model 4.0 HSE.

On page 2 & 3 of this thread you will see pictures of the plastic retaining disc that was used to contain the springs in the master cylinder of the modulator.

When these disintegrate, nothing is retaining the springs and therefore all braking ability is lost.

This thread is about a modification / fix whereby you replace the plastic retaining disc with a specially machined stainless steel version.

ok, a week or so after the repair and after having a good flush and bleed, my brakes are very much either on or off. Hmmm, i'm thinking i need to re do the small piston with the spring behind it, behind the allen key nut at forward end of the modulator. Anyone else got tips??

hi there, my p38 brakes jammed. the problem is the brake modulator. I am looking for my P38 brake modulator, rebuild/repair kit the ones without plastic parts???.