Author	[Modern View]
mhudgins 06-20-2012 18:55:32 75.117.23.21 Report to Moderator	thanks to everyone for your ideas unfortunately it hasn't been anything simple still have no hydraulic pressure anywhere no pto steering remotes nothing so the radial pump has nothing coming out of it my question is do i start there or start with the charging pump and what does the charging pump do this is my first time with a problem like this [Reply]   [No Email]
504 06-21-2012 20:43:03 64.111.61.44 Report to Moderator	Re: 1155 no hydraulics in reply to mhudgins, 06-20-2012 18:55:32   You may have checked the filter already, I have seen the filter in the grill plugged so bad all hyds wouldn t work(even the seat) [Reply]  [No Email]
Gearhead210 06-21-2012 07:42:19 75.198.104.46 Report to Moderator	Re: 1155 no hydraulics in reply to mhudgins, 06-20-2012 18:55:32   Here's something to try, See if your PTO works at all. If your PTO spins and can hold a light load, then you know you are at least getting power TO the charge pump. Then I would pull the charge pump cover off, and see if something looks astray there. Dumb question that may have been answered in an earlier post, but have you removed the strainer on the bottom of the rear end housing (10 or 12 3/8" bolts I think) to see if that is plugged? That is one possibility, but also there are rubber washers on the charge pump pickup tube, that if they are leaking the charge pump cannot prime. These are visible if the charge pump cover on the top of the rear end housing is removed, it's about a 1" vertical tube held by two tapered head screws. [Reply]  [No Email]
Dieseltech 06-21-2012 06:07:54 75.146.127.110 Report to Moderator	Re: 1155 no hydraulics in reply to mhudgins, 06-20-2012 18:55:32   Start with charge pump driveline. With charge pump removed try to turn PTO clutch drum with a prybar, it should NOT turn IF both couplers at ends of front PTO input shaft splines are OK, if it does turn one or both spline couplers have stripped splines. Most start with a clutch split, remove clutch to access spline adapter that bolts in flywheel. Front shaft can be pulled out to look at rear spline. If also bad rear PTO drop box must come off, Pto clutch short shaft removed as it is in rear coupler also. Rear coupler access is by trans-diff joint split only. A really big job if both couplers and shafts are worn. [Reply]  [No Email]
Hymie2lt 06-20-2012 20:23:57 198.254.163.152 Report to Moderator	Re: 1155 no hydraulics in reply to mhudgins, 06-20-2012 18:55:32   Before you start taking off the charge pump to replace or repair. Open up an inspection hole somewhere and start the tractor. We had a 1080 with the same type of charge pump. We replaced the charge pump with new one...put the tractor back together, and same problems. We found out one of the supply lines to the charge pump had a crack in it. When we looked in with the tractor running we could see the oil spraying all around. The crack was on the bottom where we couldnt see it. Wayne [Reply]  [No Email]
BenAlbert 06-20-2012 19:29:57 66.231.109.11 Report to Moderator	Re: 1155 no hydraulics in reply to mhudgins, 06-20-2012 18:55:32   Start with the charge pump. The radial pump can't suck oil. It has to be pressure fed. If the charge pump isn't providing oil you will have nothing. All the hyd systems run off the one pump in that tractor. [Reply]  [No Email]