|
PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
Information |
|
efi intake plumbingViews : 3714 Replies : 30Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Mar 14th, 2018, 14:29 | #21 |
Premier Member
Last Online: Today 01:34
Join Date: Jul 2007
Location: Connecticut, USA
|
c1800;
Thanks for response, but please look at other questions and try to answer, if only from memory... I did attack my AAV yesterday with socket and hammer, and got the Bulb Assembly to move (about 0.100"), but not the Insert (this tells me that they were not in contact, and that they were pressed into place as a two-step operation)...I have it soaking in penetrant and will try again today...I dislike impact force of a Hammer (although that is what it might take to get things moving initially)...I might continue with the more gentle and continuous force of a vice or Arbor Press. Re MPS...a friend of mine did repair his (typical cracked Diaphragm failure) successfully a long time ago...he machined two forming dies and used them in a press to form the bellows shape into a piece of sheet (Brass?...gauge?...he probably just measured gauge of the failed one and used the same for the repair)..unfortunately, those dies are long-gone...good luck with that project...please document this well also... Cheers |
Apr 25th, 2018, 19:07 | #22 |
Master Member
Last Online: Today 05:28
Join Date: Oct 2013
Location: Alberta
|
Hi Ron, sorry for the delay, life gets in the way, as we all know..
In any event, I’ll try to answer “Please confirm: Plunger and Insert are both of Alu (which would explain why Plunger freezes in place).” Yes, they’re all aluminum “ While pressing Insert and Bulb into Housing during Assembly/Reassembly, Insert OD indeed presses on Bulb Assy OD , but only to hold it in place...at the same time, Actuator of Bulb Assy presses on Plunger determining its final (thermally dependent) position within Insert...do I have this right?” If I’m following you correctly, that does sound right. “If so...I like it...its an inspired, simple, producible design...its only long-term weakness it the darned Alu with when it corrodeds and grows, locks up the function!!” Agreed, the innards shouldn’t be affected by clean air entering from the air filter, (maybe airborne moisture) but I’m guessing that backfiring of the engine, or vapours in the system after engine shutdown, Find their into the valve and corrode the innards. Another feature that, at least at this point ~50 years on, is that the thin rod with the 2 adjustment nuts, is useless for adjusting. Obviously they can’t be accessed when the unit is fully assembled, so I can only surmise that during manufacture there was some tool to measure the action of the bulb and apply that to the adjustment. Let me know if I can help further. I look forward to your how to guide. Did you hammer a little harder and get yours apart? |
May 15th, 2018, 15:06 | #23 |
Master Member
Last Online: Today 05:28
Join Date: Oct 2013
Location: Alberta
|
I see VP Autoparts now selling AAV for $450 US!
http://www.vp-autoparts.com/us/main....e&artno=241853 |
Sep 20th, 2018, 15:55 | #24 |
Member since 1988
Last Online: Apr 23rd, 2024 19:28
Join Date: Dec 2003
Location: Middlewich
|
I've followed this thread with interest and thank those contributors who provided the method of stripping down a seized Bosch AAV for possible refurbishment.
With a reluctance to (a) wreck my existing valve during dis-assembling without a safety net or (b) spend £400 on a re-manufactured replacement I set about producing a viable working alternative air valve system at low cost. The attached pdf document gives a description of what I've done and includes a few photographs for clarification. It all works well and doesn't detract too much from the original engine bay appearance. I've now just got to remove the original seized AAV, fit a blanking plate to the cylinder head and perhaps gently attack the valve for refurbishment. If it fails, at least I have a nice working 'choke' system on my Bosch D Jet for under £50! Paul |
Sep 21st, 2018, 12:52 | #25 |
VOC Member
Last Online: May 2nd, 2024 16:48
Join Date: Jul 2006
Location: Chatham
|
Interesting. Hope it works out long term. I would have put the choke cable through the adjacent grommet. That way no drilling and reducing the chance of leaks and rusting at the new hole. Choke outer sleeve will probably chafe through but in the meantime, a blob of sealant would be a good idea.
|
Sep 21st, 2018, 14:46 | #26 |
Premier Member
Last Online: Today 01:34
Join Date: Jul 2007
Location: Connecticut, USA
|
Paul;
A cute and ingenious rigger solution!...now if you could make it automatic by incorporating a bi-metalic element to actuate the control... Anyone who is creative and resourceful enough to come up with that, can surely bang out a block-off plate for the original AAV, but I can offer you one in SS also! Contact me off line. Cheers |
The Following User Says Thank You to Ron Kwas For This Useful Post: |
Sep 21st, 2018, 16:27 | #27 | |
Member since 1988
Last Online: Apr 23rd, 2024 19:28
Join Date: Dec 2003
Location: Middlewich
|
Quote:
The reason I didn't route it through the existing lower grommet is that the higher mounting hole I drilled ensures that the cable is in a virtually horizontal straight line from bulkhead to new valve. Last edited by cassell; Sep 21st, 2018 at 16:34. |
|
The Following User Says Thank You to cassell For This Useful Post: |
Sep 21st, 2018, 20:51 | #28 | |
Master Member
Last Online: Apr 30th, 2024 17:21
Join Date: Aug 2009
Location: Dublin
|
Quote:
|
|
Sep 21st, 2018, 22:47 | #29 |
Premier Member
Last Online: Today 01:34
Join Date: Jul 2007
Location: Connecticut, USA
|
JP;
Indeed it might very well...I'd have to study it a bit closer to determine how that style could be implemented to conduct coolant heat in, in a B18/20 application...multiple roads lead to Rome...and it's always a good idea to use/adapt a current production and available piece...! Cheers |
Mar 30th, 2019, 12:50 | #30 |
Master Member
Last Online: Today 05:28
Join Date: Oct 2013
Location: Alberta
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|