International transmission

[loggerman1959]

I have a 1978 International s8A skidder , seems to have trouble building pressure in the tranny to move the machine sometimes . I replaced the filter , but still has trouble going into 2nd gear , and sometimes in 1st , it takes a lot of RPM s to move it ......any ideas why its doing this would be greatly appreciated .

[treeslayer2003]

funk transmission. sounds like charge pump, mine needs one.

[loggerman1959]

Are they hard to come , and how would I know for sure ?

[sawguy21]

You would need to pressure test it using a suitable gauge at the port. You also need to know what pressure it should be operating at, a shop manual if still available is invaluable here.

[treeslayer2003]

mine held 300 normally, down to 100-125 at idle and had to floor it to get 200-225. then it would move but i stopped using it to hopefully not burn up the clutches. idk just where to get one.......let me know when you find out?

[Gearbox]

Look for a air leak in the suction line to the charge pump . may have a steel line with hoses between . you can use shaveing foam to check for air leaks . Also the converter temp will heat up on a long pull if you have a air leak