WURZAL THE LANDY
Active Member
- Posts
- 455
- Location
- north ayrshire
I can almost stop it so guess I cocked up replacing the o rings and bits.
Will need to look into diaphragm repair
Will need to look into diaphragm repair
P38A airbag fault
- Thread starter WURZAL THE LANDY
- Start date
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- Posts
- 2,101
- Location
- Mull of Kintyre
For what its worth, I would get the Schraeder valves for inflating. Agreed not needed if well maintained but much better than driving home at 35 mph
- Posts
- 58,170
- Location
- Preston Lancs.
Does almost stop it mean it is blowing air past your finger and you can't stop it? It is fairly easy to judge run compressor put your finger over outlet with moderate pressure and air should blow past your finger. New diaphragm is an easy job.
WURZAL THE LANDY
Active Member
- Posts
- 455
- Location
- north ayrshire
Car won't move till its fixed as she needs an mot so would like to do it right but getting fed up now
WURZAL THE LANDY
Active Member
- Posts
- 455
- Location
- north ayrshire
A wee bit of air gets past but not much
- Posts
- 58,170
- Location
- Preston Lancs.
The compressor in good order should produce around 175 PSI shortly after starting up if it's not doing that it is no good.
WURZAL THE LANDY
Active Member
- Posts
- 455
- Location
- north ayrshire
I would doubt mine is kicking out that much so what have I most likely done wrong? I'm thinking I must have damaged the piston seal or not fitted something right
- Posts
- 58,170
- Location
- Preston Lancs.
Read the instructions in my "How to" i can't see what you have done and can't do it for you.
Discocrazy2
Member
- Posts
- 37
- Location
- Basingstoke
It should at least be able to inflate a latex glove in a few seconds.
- Posts
- 58,170
- Location
- Preston Lancs.
What does it take to inflate a latex glove 2 psi?
WURZAL THE LANDY
Active Member
- Posts
- 455
- Location
- north ayrshire
OK ordered a full eas washer kit so over the weekend (if it arrives) I'm going to replace washer and redo the pump. I think I must have damaged the seal on the piston causing the low pump pressure does this sound right? Need to do the diaphragm but if I'm going to do that might as well do everything. Am I asking for trouble?
- Posts
- 3,878
- Location
- Near Heathrow.
- When you did the piston seal, did you also check the cylinder liner ? Usually part of the kit.
- Also check the compressor reed valves & little o-rings. If these are wrong thickness you don't get much pressure.
WURZAL THE LANDY
Active Member
- Posts
- 455
- Location
- north ayrshire
I fitted a new cylinder and replaced the reed o rings from the kit I got I suppose they could be wrong but dono
- Posts
- 3,878
- Location
- Near Heathrow.
Per Wammers HowTo . . . .check the o-ring thickness. Also re-check the reeds are correctly seating.
NOTE:- The OEM or Dunlop compressors are made abroad, some are fitted with a Japanese spec O'ring under the exhaust reed. 1.83 mm cross section. If this O'ring is replaced in refurb by one of the O'rings usually sent out in this country 1.78 mm cross section, in some cases the thinner O'ring will not protrude above the top of the recess as it should. The exhaust reed MUST sit flush onto this O'ring or the compressor will not work correctly. The new O'ring if it falls below the top of the recess MUST be spaced out until 1/3 of it sits above the top of the recess to accept the exhaust reed. Make up a suitable .50 mm packer and secure O'ring and packer in place with silicone sealant.
NOTE:- The OEM or Dunlop compressors are made abroad, some are fitted with a Japanese spec O'ring under the exhaust reed. 1.83 mm cross section. If this O'ring is replaced in refurb by one of the O'rings usually sent out in this country 1.78 mm cross section, in some cases the thinner O'ring will not protrude above the top of the recess as it should. The exhaust reed MUST sit flush onto this O'ring or the compressor will not work correctly. The new O'ring if it falls below the top of the recess MUST be spaced out until 1/3 of it sits above the top of the recess to accept the exhaust reed. Make up a suitable .50 mm packer and secure O'ring and packer in place with silicone sealant.
Big vee
Active Member
- Posts
- 247
- Location
- Near Kingston upon Thames Surrey
Maybe valve block needs a rebuild , I did a pump rebuild then needed the valve block needed doing sorted it for mine
WURZAL THE LANDY
Active Member
- Posts
- 455
- Location
- north ayrshire
Valve block just been rebuilt, reseated exhaust o ring, replaced pump piston seal again. Guess what I must have a leak somewhere as I am no longer getting error messages or flashing lights at the button but after about 10 mins the piece of c##p won't rise off bump stops. I'm cold and fed up with her just being a pain, I just want to drive her again or get rid and look at something else maybe a wee 2 seater
Anyone want to buy her or sell me a set of springs and I'll dump the air.
Anyone want to buy her or sell me a set of springs and I'll dump the air.
- Posts
- 3,878
- Location
- Near Heathrow.
So if you leave front door open, and let it run, does the compressor now fill the tank, and eventually shutoff ? If not you still have leaks somewhere.
The tank needs to have plenty of air to get it off the bump stops.
The tank needs to have plenty of air to get it off the bump stops.
- Posts
- 16,479
Should take arounf the 10 minute mark to fill the tank....7-8 minutes for a good pump...longer than 12 and the pump is tired.
WURZAL THE LANDY
Active Member
- Posts
- 455
- Location
- north ayrshire
I haven't found the leak got too dark and cold to be bothered last night. I've replaced all the seals in the pump so hope it's not the prob now. Ran the engine with doors open and didn't fill the tank.
Anyone in North Ayrshire with a free Sunday afternoon fancy having a look as springs don't look that expensive or hard to fit. Or fancy swapping for an old style mx5?
Anyone in North Ayrshire with a free Sunday afternoon fancy having a look as springs don't look that expensive or hard to fit. Or fancy swapping for an old style mx5?
- Posts
- 3,878
- Location
- Near Heathrow.
So with the door open the corner valves will not operate, but the pump should run. At the same time as the pump runs the Diaphragm Solenoid Valve should open to force air into the tank. This is easy to check.
- Remove exhaust filter & the air-line that feeds tank.
- When the pump runs, check for air coming out of either tank feed, or exhaust port.
- If there's air coming from exhaust port, then diaphragm valve or solenoid isn't working correctly.
- If there's only air coming from tank port, then 1st measure pressure, and 2nd wait for tank to fill.
