Tinman22 Posted September 22 Share Posted September 22 So the 2090 finally decided to retire so I sent the 2130 out for a rebuild. Besides the obvious (clutch set,trans brake,rear main,cooler and lines,shift knob) is there anything I’m missing in the way of air controls? No p.t.o. Quote Link to comment Share on other sites More sharing options...
Solution fjh Posted September 22 Solution Share Posted September 22 33 minutes ago, Tinman22 said: So the 2090 finally decided to retire so I sent the 2130 out for a rebuild. Besides the obvious (clutch set,trans brake,rear main,cooler and lines,shift knob) is there anything I’m missing in the way of air controls? No p.t.o. Nope! Shift knob is your changed item! 1 Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 22 Author Share Posted September 22 I didn’t think so but I’ve been known to get things wrong. Thanks. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 22 Share Posted September 22 the shift knob for the 2090 is different, the 2130/2180. is the same tranny, the shift knob is the difference. Red splitter: 13 spd.... Gray splitter: 18 spd..... Quote Link to comment Share on other sites More sharing options...
fjh Posted September 22 Share Posted September 22 12 minutes ago, Joey Mack said: the shift knob for the 2090 is different, the 2130/2180. is the same tranny, the shift knob is the difference. Red splitter: 13 spd.... Gray splitter: 18 spd..... I have heard that you can modify the 13 knob but have never done it myself! Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 22 Share Posted September 22 yes you can, you have to take the knob apart ond cut the lock out the doesnt allow a low range split.. but the 18spd. knob was $65.00 back when I was doing this.. so why not buy the correct knob Quote Link to comment Share on other sites More sharing options...
fjh Posted September 22 Share Posted September 22 Depends on a guy’s budget I guess buddy!😀 1 Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 23 Author Share Posted September 23 Does anybody have a simplified diagram for shifter/transmission air line routing? I have the factory service manual it looks like fig.544 page 205 is close. I don’t have a double check valve as indicated do I need one? Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 23 Author Share Posted September 23 Does this look right Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 23 Author Share Posted September 23 Also does anybody have a good part number for the correct double check valve? Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 23 Share Posted September 23 Bendix DC-4... Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 23 Author Share Posted September 23 Thanks for the answer. I looked at that one but wasn’t sure. It shows two supply lines. Where should I pull them from. I don’t see one for the nine speed. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 23 Share Posted September 23 does your truck have the neutralizing air control for P.T.O. operation? if not, thats the wrong diagram. I have all the Mack books for this but before, I post any thing that may ad confusion Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 23 Author Share Posted September 23 (edited) No it does not. I thought I had it right it said without compound neutralizing for pto. Edited September 23 by Tinman22 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 23 Share Posted September 23 you did,, sorry, i read it too fast.. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 23 Share Posted September 23 so air is delivered in 2 spots because you have a range fork and a splitter fork. both need air pressure on the ready. the pilot is what tells it to shift up or down. the air supply to the DC-4 can come directly from the secondary tank with a protection valve, or you can steal air with a ''T'' fitting in the main air feed to the range valve. I am not a Guru when trying to type this. 1 Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 23 Author Share Posted September 23 (edited) Ok. So on the dc-4 check valve it shows two supply and two del.. Looking at the schematic there is only the one line coming from the double check valve. So plug the other supply and del ports. Edited September 23 by Tinman22 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 23 Share Posted September 23 yes.. Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 23 Author Share Posted September 23 That is what I will do then. I wonder why they want a double check valve with only one supply line? Doesn’t leave much to check. The diagram on the Bendix site shows it as a check valve between two feeds like a trolley brake and a foot brake allowing whichever has the higher pressure to operate the del side. 1 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 23 Share Posted September 23 transmision range shift do not require large amounts of air, just, directed pressure.. Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 23 Author Share Posted September 23 So I could just t into a supply line and feed it air since the double check function of the valve isn’t really checking anything. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 23 Share Posted September 23 yes I feel sure you can.. you are just trying to have air pressure on the ready that will be used as the shift knob asks, when you select ranges.. there are 2 range shifters, so you need 2 supplies.. air dont care, it just needs to be delivered.. 1 Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 30 Author Share Posted September 30 (edited) I’m having a hard time getting a good part number for the early chrome round Mack 13 speed shift knob. It seems half the vendors say it’s the same as an Eaton fuller the others say it’s not while 1/3 say it’s good for both. Any help? Edited September 30 by Tinman22 Quote Link to comment Share on other sites More sharing options...
Tinman22 Posted September 30 Author Share Posted September 30 (edited) Hmm….is it thread size? Internal ? The new one I got isn’t even threaded,looks like it mounts on a tapered shaft with a top nut. Guess I’ll just start buying knobs and hope I figure it out. Edited September 30 by Tinman22 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted September 30 Share Posted September 30 Whats up tinman? still no luck finding the chrome knob? i dont see why a generic one wont work, if it doesnt have a low range lock out i would guess it would become an 18 spd. 2130/2180 is the same as far I can remember.. just the shift knob is different.. am i too simplistic? Quote Link to comment Share on other sites More sharing options...
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