howsthat1959 Posted December 3, 2013 Share Posted December 3, 2013 Can anyone tell me what the two cylinders are used for on the following Peterbilt 359 firewall? Thanks. Quote Link to comment Share on other sites More sharing options...
clayton Posted December 4, 2013 Share Posted December 4, 2013 One is the AC drier( I think) Two ???? Quote Link to comment Share on other sites More sharing options...
howsthat1959 Posted December 4, 2013 Author Share Posted December 4, 2013 One is the AC drier( I think) Two ???? I kind of thought one was a A/C dryer. Still don't know about #2 Quote Link to comment Share on other sites More sharing options...
scale trucker Posted December 6, 2013 Share Posted December 6, 2013 one should be ac drier the other should be air fan solonoid Quote Link to comment Share on other sites More sharing options...
Mr mopar Posted December 12, 2013 Share Posted December 12, 2013 This should help you ? Quote Link to comment Share on other sites More sharing options...
bricknick Posted December 12, 2013 Share Posted December 12, 2013 The large one on the left side (passenger side) is definitely the ac evaporater canister and the other air solenoid is for the air controlled windshield wiper motor. Quote Link to comment Share on other sites More sharing options...
howsthat1959 Posted December 12, 2013 Author Share Posted December 12, 2013 I have that picture of the firewall...and thanks for the info. Seems those things are the A/C drier and ww motor. Thanks all. Quote Link to comment Share on other sites More sharing options...
dad vader Posted December 16, 2013 Share Posted December 16, 2013 I am not trying to argue,but that series cab had individual air wiper motors,and were located under the dash. One on the left and one on the right.The air valve located in spot # 2 would be the selenoid and filter for the air controlled fan clutch. And as said before the one in location #1 is the reciever drier for the Air conditioner. In my 30 years as a mechanic I have changed many of both. Quote Link to comment Share on other sites More sharing options...
trucknut10 Posted December 22, 2013 Share Posted December 22, 2013 Hello Clayton, Have you thought of asking Tim. Tim is very up on Petes he knows Petes very well. His web page is www.timstrucks.com Quote Link to comment Share on other sites More sharing options...
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