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Loadstar 1700

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Hey all some questions on a 1978 loadstar 1700 dump truck. First, the beaten to death question, which trans oil? Its a 5 speed with 2 speed rear. Reverse is all the way to you and down. From what i gather a 50wt transmission oil or 30wt engine oil will suffice ( with a elbow installed to increase capacity). I do not know exactly which model the tranny is, i would love to find out but without better history it sounds next to impossible to figure out without a tear down.

Next question, it seems any 85-90 or simialr synthetic will work in the rearend? What about the spliter? 

Laslty (ish) it has of course the pto hydrualic pump, is there any special reservoir for the pto its self or is it all shared with the transmission?  I know a manual would be the place to look for this but i havent found one to get ahold of. Thanks ahead of time for the help!

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Pto shares oil with transmission. If it was mine and I wanted to keep it a long time I would drain transmission and use 50 wt synthetic manual transmission oil. I would also use synthetic oil in the rear diff but I am not sure right now what the correct weight or product designation would be. Also never serviced a two speed actuator so without reading about it I am in the dark.

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75W90 in trans and rear end, motor oil in 2-speed shifter box. Old seals sometimes don't handle synthetics well. Dinosaur juice worked for millions of miles!

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On the older ones I drove back in the mid 70's we used 10 weight in the shifter, but I don't know much about the newer models.

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Thank you guys, thats what i needed to know, i think the transmission has been refered to as a short 4th or 5th direct, top end shift pattern is 4lo 5lo 4hi 5hi, anyone know which model this would be? Also it has the mv404, and my idle is pretty high and actuated by manifold vacum to a little solenoid on the throttle. When disconecting the vacum line it idles down to more normal speed. Anyone hve any experience adjusting tbose or know why it might be set so high?

 Thanks 

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It seems likely you have an IH 5 speed (but perhaps not).  To know what it was built with, you need a copy of the lineset ticket.  You can order them from Super Scout Specialists 
https://www.superscoutspecialists.com/store/p-406-line-setting-tickets.aspx 

or from the Wisconsin Historical Society:
McCormick-International Harvester
816 State Street
Madison, WI 53706
608-264-6484
E-MAIL: askmccormick@wisconsinhistory.org

Cost is $20 from either one.

 

 

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I do have a lineset in the kick pannel just dont know how to read it, ill post a photo tonight but i will get a better one. Thanks!

20190530_203034.jpg

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That shows the IH built T-496.  There were 3 variations of the IH 5 speed, a T-494 that had a .82 overdrive in 5th and a T-495 that had a lower 7.17 low gear.  You have what was called the close ratio version with 6.21, 3.43, 2.05, 1.11, and 1.00 gears.

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Wasn't IH 5-speed real picky about what fluid you put in them? 

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The 494-495-496 versions (there were 3 generations of the 5 speeds over the years) had a problem with inadequate amounts of lube getting to certain areas until a flipper was added to get more splash.  I don't recall that the problem was related to the lube used.

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Worked at an IH dealership in the 70's and 80's. On that transmission the fix that they came up with was a 45 degree street ell to raise the oil level. Run 10W-40 oil and there was an additive that you added. I have no idea what the additive was after all these years. We always wondered why they did not use Hy-Tran but I am not sure how well the truck division got along with ag.

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