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Harry Ferguson Tractors Discussion Forum
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TO-35 valve train and Trans/ Hyd fluid

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Sklapp

07-16-2007 14:32:04




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Hello all,
A few questions RE: my 1960 TO-35 Deluxe. The rockers seem to be making more noise than should. Are they similar to adjust as most other automotive rockers? What are the proper clearances for intake and exhaust? I"m assuming you have to remove the gas tank. Next project is to change out the tranny/hyd fluid. I"ve read on hear, I believe from Jeff in Ohio, about flushing the case of old oil and crude but am confused about proper fluid to refill. Manual says GL-1 90W. I read others using 15w30. Seems a big difference in viscosity. I live in NE Wisconsin and plan to use the tractor year round. Snow removal and bush hogging. Any advice? Thanks much in advance. Steve

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DennisPinOhio

07-17-2007 13:50:40




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 Re: TO-35 valve train and Trans/ Hyd fluid in reply to Sklapp, 07-16-2007 14:32:04  
Re the trans/hydraulic fluid: I went to Wal mart and bought 20W50 motor oil. It works great, even in very cold weather.
John UK told me it was a good choice.
Just my 2 cents.



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Lance J.

07-17-2007 15:07:27




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 Re: TO-35 valve train and Trans/ Hyd fluid in reply to DennisPinOhio, 07-17-2007 13:50:40  
Hey Dennis P.- You say you are now using 20w50 in the tranny of your tractor? I am fixing to change the trans oil in my TO-35 and John(UK) said 20w50 would be a good choice. Do you use it year round? I like the fact that the 20w50 has detergents in it, unlike the old GL1 stuff. All kinds of crud seems to work its way into that gearbox, and I imagine the detergents would help.



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DennisPinOhio

07-20-2007 05:33:27




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 Re: TO-35 valve train and Trans/ Hyd fluid in reply to Lance J., 07-17-2007 15:07:27  
Yes, I use it year round and no problems at all.



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gshadel

07-17-2007 12:29:25




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 Re: TO-35 valve train and Trans/ Hyd fluid in reply to Sklapp, 07-16-2007 14:32:04  
Your valves adjust very much like older automotive valves... before they switched to hyraulic lifters. And your TO-35 engine will sound louder than most newer car engines becuase it"s out in the open instead of surrounded by sheet metal, and the old mechanical pushrod & valve tappets are noisier than hydraulic lifters. I don"t know the TO-35 valve adjustments either "cus I have a TO-20. The tune-up spec"s over on the left list the TO-35 exhaust valve clearance as .013", don"t list the intake, probably the same. I assume that is a HOT valve gap. The TO-20/30 valves are set at .015" cold, or .013" hot. I know just enough about oil to be dangerous. I believe the automotive viscosity spec is different than the GL-1 mineral oil viscosity spec, and in actuality 15W30/40 is basically the same viscosity range as 90W GL-1. 90W GL-1 is NOT the same thing as 90W EP grade transmission oil, which is a lot thicker, and stinkier. The 15W30/40 recommendation for tranny/hydraulics sounds like a good idea for us Northern boys, that GL-1 is thick as mud on those cold Winter days. Next time I change my tranny oil, I"m switching to 15W40 oil, the same stuff I run in my diesel p-up truck.

George

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Jerry/MT

07-16-2007 17:06:02




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 Re: TO-35 valve train and Trans/ Hyd fluid in reply to Sklapp, 07-16-2007 14:32:04  
Actually your manual probably says 90W GL-1 for temperatures above 50F and 80W GL-1 for temperature below 50F. If your system is in resonable shape you can probably use MF spec transhydraulic fluid (MF 1130???). Otherwise, you need to get the correct fluid. NAPA carries it and if you do an archive search you can find the NAPA part number.
Regarding the rocker arms, they are adjusted with a screw/locknut set up. I don't have a -35 so I can't tell you what the spec's are. I have a TO-30 and when I have to adjust the valves I have to take off the fuel tank and I use a one liter pop bottle for a temporary fuel tank since the valves are set hot and running.

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