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D8 14A series F (2U) pony motor issues need help

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7 years 5 months ago #165838 by akpj

James,

Once you get that 14A running correctly, you will really enjoy the capabilities of it. They are strong Cats. The radiator should be filled up to where you can see the water/antifreeze mix. Your tractor is a later build with hydraulics from the factory. The tank in the lower grill area in front of the radiator is your hydraulic reservoir for the hydraulic pump that is driven off of the front of the crankshaft. Keep it filled to the top with hydraulic oil. The dipsticks in and around the seat area are for the power assist for the steering clutches and most likely for your wet brakes and actual steering clutches. If I remember correctly, those all take standard motor oil with exception to the transmission which takes 90wt (someone may correct me for the later serial numbers which could use motor oil too). There is one more dipstick to check and it is right in the center right below the dash on the main deck. That is for your oil master clutch. I have changed my 14A over to using ATF in the oil clutch. It will stop the drag while trying to get your transmission into gear when the system is cold.

As far as the starting engine transmission, in weather above freezing, use the high range and turn the diesel over in the start position until it is spinning easily and the oil pressure is up. Then kick it over to the run position and in a minute or two, pull up on the throttle and fire the diesel. Don't forget to check the final drives in the back of the machine on each side just above the drawbar and near the inside of the tracks. If you don't have the correct wrench, you can make one by getting the correct size bolt head that will fit the inside of the oil fill cap. Then weld the nut on the bolt.


Bob,
Thanks a lot. Had assumed that the small one on the front was for the hydraulics but you know what assume means. Assume :-) most any hydraulic oil is good on these old things? Same with the antifreeze and motor oil unlike all the new stuff that has to have special stuff?

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7 years 5 months ago #165863 by Paso Bob
I would suggest name brand oils and antifreeze, no specialty types. The hydraulic system will have different oils in it that probably has been added to for years. It would be difficult to ever change it completely as the lines and rams are full.

D-4 7U-43159 with 4S dozer and Cat 40 scraper, D-7 3T-1179 with Cat 7S hydraulic dozer, D-7 17A 13,944, D-8 14A-1160 with Cat 8S cable dozer, Cat 12-99E-4433 Grader. All runners and users.

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