I have found a decent supply of parts for the T260 from Sears Parts Direct.Europe Albania Andorra Austria Belarus Belgium Bosnia & Herzegovina Bulgaria Croatia Cyprus Czechia Denmark Estonia Faroe Islands Finland France Germany Gibraltar Greece Guernsey Hungary Iceland Ireland Isle of Man Italy Jersey Latvia Liechtenstein Lithuania Luxembourg Malta Moldova Monaco Montenegro Netherlands North Macedonia Norway Poland Portugal Romania Russia San Marino Serbia Slovakia Slovenia Spain Svalbard & Jan Mayen Sweden Switzerland Ukraine United Kingdom Vatican City Åland Islands North America Anguilla Antigua & Barbuda Aruba Bahamas Barbados Belize Bermuda British Virgin Islands Canada Caribbean Netherlands Cayman Islands Costa Rica Cuba Curaçao Dominica Dominican Republic El Salvador Greenland Grenada Guadeloupe Guatemala Haiti Honduras Jamaica Martinique Mexico Montserrat Nicaragua Panama Puerto Rico Sint Maarten St. They may have some minor option differences, but are fundamentally the same engine. So I am guessing that the Onan T260 which was used in the John Deere F930's is an updated version of the NHC from the 70's.
#HYDRA FOR MAC MANUAL#
Best that I could find is that older John Deere F930's ran an Onan which when cross referenced with the NHC from this manual had identical bore, stroke, displacement and HP.
#HYDRA FOR MAC SERIES#
The B and P series seem to often times be lower HP engines with a different bore and stroke. The B seems to stand for Basic (just guessing), the P for Performance (actually stated as such), and the T for something I am unsure. This is where the B, P, and T models which I have been seeing for most parts lists come in.
#HYDRA FOR MAC SERIAL#
It wasn't until later that Onan changed their model and serial system. They all came as 2 cylinder 4 stroke engines with a bore of 3.56", stroke of 3.00", and a compression of 6.5:1(NHA) or 7:1(NH, NHB, NHC) with 60 inches of displacement. It seems that sometime back in the 70s Onan's N series engine were all the same (except the N52M). After doing searches on the Gehl 2500 and Ford CL20 which I believe to have run the same engine I came across the "Onan N Series Training Manual". I had a copy of that and took the search a bit further (for anyone who may be looking in the future, here is my best guess so far). Skid Steer Identification Plate States : Model - 8B Serial No - 4132 Engine No - NHC-MS and Intake Manifold # - 170-2966 There are some seals and such leaking on the motor which I had hoped to replace while I play around before next winter and the restore, but I would like to be sure that I am ordering the right parts. I do have a few pieces of info which may help. I was just curious if anyone has any idea what model of Onan motors were installed into Hydra Macs.
I was going to look up some parts for the motor and low and behold someone had drilled the rivets holding the identification plate out. Just recently bought an old Hydra Mac 8B (plan a restore in the future with new motor), thing runs great for the most part, but obviously need some TLC here and there for the time being. I have read over quite a few posts here and it seems that there are many knowledgeable people around here, so I figured I may as well join in.
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