shaun
Little Belter
Posts: 84
|
Post by shaun on Jan 29, 2014 21:05:14 GMT
So, armed with Mac's helpful explanation above I popped the bonnet on the YA when I got to work and found out this: I have 4 wires going to the vacuum valve: 1) Black with a small red and a small brown sheath going to the top left. 2) Black with a small red and a small brown sheath going to the top right, 3) Black x2 connected together with a small brown sheath on each going to bottom right. All wires are original as is sheathing. This does not correspond with the haynes manual either. Is this because it is a military 24v system and follows different colours
|
|
|
Post by macplaxton on Jan 29, 2014 22:10:33 GMT
Might be. Let's look at the right book! 66YA-vacval by macplaxton, on Flickr 66YA-vacval2 by macplaxton, on Flickr 3) As you can see at the "VACUUMKLEP" the "Br" browns (earth go to the bottom terminals). Now double check that this is a working earth with a meter or test lamp. Also check if the left bottom earth tag is connected to the right bottom earth tag or not (as mentioned earlier, later valves have independent earth tags, so wiring them up old-school will result in the unwired side not working) 2) The top right is (bottom half of the valve in the pic) is Rd-Or-Gn, which is Red/Orange/Green (from the low ratio hold switch / marked "BERGREMSCHAKELAAR" on diagram) 1) Top left is (top half of the valve in the pic) is Rd-Or, which is Red/Orange which is the same as the Red/Orange that joins the flylead connectors on the carburettor microswitch marked "MICROSCHAKELAAR, VACUUM" Obviously they can't be the same, but if they look too similar, just check with a meter/test lamp which one is from the carb and stick that on the overdrive side of the valve and the put the other on the underdrive/kickdown side.
|
|
shaun
Little Belter
Posts: 84
|
Post by shaun on Jan 29, 2014 23:03:43 GMT
Amazing I have printed it and will hopefully look tomorrow inbetween MOT's. If the boss doesn't catch me. I have it stored at work at the mo 'cos of the flooding
|
|
|
Post by macplaxton on Jan 29, 2014 23:27:43 GMT
Looking at another diagram Shaun, the numbers (which may/may not be moulded into the plastic on the back of the low ratio hold switch) are:
49 - Blue-Green Red-Orange-Green - 15 - Red-Orange-Green R - Blue-Green (can't make that other one out, might be Bl-Gr (Blue-Green) also, or Gl (Yellow)) Red-Orange-Green - 31
I think the two colours on the flyleads from the microswitch to the loom are
Green <=> Green/Blue Blue <=> Red/Orange
Sorry about the low-res pics from the PDFs. (If I'd have scanned them myself, they wouldn't have been compressed)
|
|
shaun
Little Belter
Posts: 84
|
Post by shaun on Jan 31, 2014 22:02:35 GMT
Thanks again Mac. I now have vacuum on the correct side of the vacuum valve. Just need to sort a non butchered cam now, and hopefully all will work well (fingers x-d) Not had chance to drive it yet. Will be in touch
|
|
|
Post by macplaxton on Jan 31, 2014 23:07:30 GMT
I now have vacuum on the correct side of the vacuum valve. Ah, so it was back-to-front then? On closer examination I take it those colours where nearer what they were actually meant to be? Glad to hear you're getting somewhere with this and found something amiss.
|
|
shaun
Little Belter
Posts: 84
|
Post by shaun on Feb 12, 2014 22:59:23 GMT
First chance for a proper drive yesterday, Just the 5 mile drive home. It works, in a fashion. Accelerate to 70kph and its at 4000rpm, back off the throttle and re-apply, revs dip to 3000rpm and the speed is still at 70kph. I even pushed it to 80kph for the first time ever, and the revs only went up 2000rpm tp 3200 Looks like we are deffo on the right way now. When I throttle off for junctions etc its like riding a large cc twist and twat scooter, engine braking that makes it feel like a little anchor has just been deployed! Is that right ?? Oh, and I have a new cam (maybe 2nd hand) and a new microswitch on their way from Holland for 53 euro's inc delivery. So when I get that I will have another play and get back to you all. Thanks gain for your patience, and Mac for eventually putting in such simple terms that even I am nearly understanding it
|
|
|
Post by ozzie on Feb 12, 2014 23:58:29 GMT
Hi ya Looks like I am on the same problem list as you but mine is wiring for sure. Why oh why
|
|
|
Post by macplaxton on Feb 13, 2014 0:03:13 GMT
When I throttle off for junctions etc its like riding a large cc twist and twat scooter, engine braking that makes it feel like a little anchor has just been deployed! Is that right ?? Having given it no technical thought, the only thing I remember on slowing down is that when the brake light switch is activated, the vacuum valve clicks on the kickdown side (same circuit as low ratio hold) and provides engine braking. I will give it more thought tomorrow with a coffee at hand.
|
|
shaun
Little Belter
Posts: 84
|
Post by shaun on Feb 13, 2014 19:35:01 GMT
90kph tonight
|
|