Rideawaysenior 25 #1 Posted April 13, 2008 Ok, when I got the D200 home, I fired it up, and slid the hydro lever forwards. Nothing happened. I figured the pump was bad. I replaced it with a NOS hydro pump. Fired it up again and nothing same problem. If I let it idle, it will build enough pressure to lift the 3 point and when I let it back down it won't lift back up. I now know the pump was not the problem. I flushed the tranny, changed the oil and filter. Any other suggestions as to where to look? I'm at a loss. Jack Share this post Link to post Share on other sites
.5racer 14 #2 Posted April 13, 2008 Is the by - pass - valve on the side closed. Should be on the left side as you sit on it . Close the valve with a flat tipped screw driver . Clock wise to close for operation, counter clock to allow to roll without motor power. Share this post Link to post Share on other sites
Rideawaysenior 25 #3 Posted April 13, 2008 Yeah, I forgot to mention that. The dump valve has been checked too. That is not where the problem lies either. Share this post Link to post Share on other sites
.5racer 14 #4 Posted April 13, 2008 But the three point and mid point do lift and lower ? Share this post Link to post Share on other sites
Rideawaysenior 25 #5 Posted April 13, 2008 If I rev the engine it will lift and then lower. If I try it repeatedly, it will only do it once. On the second attempt, it would not go up. I had to rev the engine again. Share this post Link to post Share on other sites
.5racer 14 #6 Posted April 13, 2008 Low oil level ? mines a D-160 and under seat says 10w-30 for oil type. Bad fiter ? Looking in book now Share this post Link to post Share on other sites
Rideawaysenior 25 #7 Posted April 13, 2008 Terry, I flushed and filled the trans, replaced the filter, and put in a NOS pump. The problem I am having now is the same problem that I had when the old pump was in there. I'm thinking there is a pressure releif valve somewhere that I don't see that is stuck open perhaps. Share this post Link to post Share on other sites
.5racer 14 #8 Posted April 13, 2008 could be the crosover valve , rebuilt my whole rearend but didnt do that part . book doesnt say anything about that either , wonder if a spring in it went bad in the relief ? gonna go look at parts look up ! 104809 is the number I got . Share this post Link to post Share on other sites
nylyon-(Admin) 7,882 #9 Posted April 13, 2008 I am shooting from the hip on this one because I have no clue on how the pumps are powered. But is there a pulley / shaft where the keyway could be sheared? Share this post Link to post Share on other sites
Rideawaysenior 25 #10 Posted April 13, 2008 Thats where I'm thinking it is too. I just found it behind the left tire on the fender. I also just bought one on ebay for 25.00 hopefully that is my problem. I have not had a chance to do a pressure test yet, but I would think with a new pump, I would be ok with that. The only other thing I could think of would be a PRV somewhere. I'll let you know what I find. Thank you for your help. Jack Share this post Link to post Share on other sites
Rideawaysenior 25 #11 Posted April 13, 2008 Hey Karl, The pumps on the D series are splined shaft coupled directly to the engine. I've looked at that already. I'm now thinking with the help of Terry that it is a pressure releif valve stuck in the open position. Share this post Link to post Share on other sites
.5racer 14 #12 Posted April 13, 2008 Wonder if the hoses could be crossed on the relief . Wondered that when I put ine together . But it worked the first time out . The hook up on the hydro pump is connested derectly to the front side of motor by a splined conection and that could have come loose and slip under load ! Good thought nylyon !. But if you replaced the pump you should have caught that . Share this post Link to post Share on other sites
.5racer 14 #13 Posted April 13, 2008 What abou the hydro drive in the rear end , could it have gone bad, thats the part on the rear end that looks like the front pump and suppose to have the same parts for operation. There are two check valve springs in the rearend as well. Trying to open and paste but not gettin any luck. Share this post Link to post Share on other sites
.5racer 14 #14 Posted April 13, 2008 https://lookup3.toro.com/partdex/PartPage.c...DrawingIndex=14 https://lookup3.toro.com/partdex/PartPage.c...&DrawingIndex=4 hope these work Share this post Link to post Share on other sites
.5racer 14 #15 Posted April 13, 2008 https://lookup3.toro.com/partdex/PartPage.c...DrawingIndex=15 Share this post Link to post Share on other sites
.5racer 14 #16 Posted April 13, 2008 Do these help or did you have these allready there the same as my D-160 's . The D-200 is listed as 71-20KS01 Share this post Link to post Share on other sites
refracman 167 #17 Posted April 13, 2008 there is a snap ring under the cover plate on the part affixed to the trans and this can fail acting like the pump has fauled. carl our local wh guy has told me that this can occur. if you want you can I give him a call tomorrow or pm me and give you his #. Share this post Link to post Share on other sites
Rideawaysenior 25 #18 Posted April 13, 2008 Steve, Any help I can get would be great. I am learning alot about these hydros on teh D series by jumping in head first. Not quite the indoctrination I was hoping for, but a good way to learn I suppose. I'd love to get this thing operating as well as the engine runs. It sure will be a nice machine when done. Thanks again for your help. Jack Share this post Link to post Share on other sites
