Thread: Brakes Hot NO Pedal

may have just been a bit of dirt in the master......

how was the brake fluid that came out 3 months ago........was it really bad....?
or was it clean....?



what about what came out this time...?

I'm inclined to agree with Defenderzook - master cylinder. Hard to see it being anything else. Possibly a bit of dirt both allowed leakage past the seal and also stuck the cylinder enough that the spring only slowly returned it.

John

Originally Posted by Tank

Dave & UncleHo, Hard to the floor, absolutely no braking at all, had to use gears and hand brake to come to a full stop, I was only doing about 10klm/h, pumping had no effect, scary feeling, vacuum booster seems alright all air lines intact, brakes are working fine now, this happened, to a lesser degree about 3 months ago, drained fluid, replaced with new fluid, bled and relaced pads, Disc rotors are running true and have no scores or grooves, nor do they show signs of overheating, BTW it's an Auto, Good Quality brake fluid and Pads, Regards Frank.

pretty much exactly what mine was like...

changed pads, hasnt happen again....

yet...

i cant see how pads would affect the pedal......

even if they were made out of jelly....you should have some sort of feel to the pedal.......

it is interesting though......i have fitted el cheapo pads to the rear of lurch....havent had any problems yet......
but am now starting to worry......

Originally Posted by JDNSW

I'm inclined to agree with Defenderzook - master cylinder. Hard to see it being anything else. Possibly a bit of dirt both allowed leakage past the seal and also stuck the cylinder enough that the spring only slowly returned it.

John

John, now that I've slept on it I am tending towards it being the Master cylinder, it seems to be the only rational explanation, I will go through it completely and rebuild the lot.
John on another note, the 2.25 I bought off you has a profile cut 1" thick steel spacer between the sump and the block, I haven't dropped the sump off yet as I don't have it setup on the engine stand yet, I was wondering if it is a Spacer or a bearing girdle that supports the main bearings. Have you come across this before in your travels, btw I scraped off all the oil soaked dust covering the motor, in some places it was more than 2" thick, weighed it all and it was 10KGs, I think the former owner used to stand back 10' and throw the oil at it. Head's off, bores are glazed up, but there is no lip in the bore or any gouges, so a hone and new rings may do the job, how's the fire situation, hope all is well, Regards Frank.

G'day Tank

That sump spacer is interesting, what is the Engine No (I don't want the last 2 didgits as this could have been a stationary engine application, or could have been a "Special" with increased sump capacity. does it look like a factory fit or a home/engineering shop conversion.

cheers

Originally Posted by UncleHo

G'day Tank

That sump spacer is interesting, what is the Engine No (I don't want the last 2 didgits as this could have been a stationary engine application, or could have been a "Special" with increased sump capacity. does it look like a factory fit or a home/engineering shop conversion.

cheers

UncleHo, engine number is 9069051**, it is out of a Series III 81 model, I bought it off JDNSW who thought it was a 5 Main bearing block, but it turned out to be a 3 Bearing block (has the 2 piece rear main oil seal), it has a Viscous fan and some interesting oil pressure switches (2 of) on the oil filter head. I haven't dropped the sump yet because my chain block has gone walkabout. The spacer looks to have been cut on a profile cutter, it is not painted like the rest of the block, BTW it is a Diesel, be interesting to see the rest of it, any clues, JDNSW knows the history of this motor and vehicle, Regards Frank.

my sump spacer looks the same, been cut with an oxy profile cutter...

i have an accessory part number for them somewhere...