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Bill Holton 03-15-2010 20:44:20 75.100.253.227 153323 Report to Moderator	I have a leak where the engine mate to the torque tube. Is there a gasket that leaks at the mating surface? How about a leaky seal on the torque tube shaft? Thanks in advance. [Reply]   [Send Email]
BarryfromIA 03-16-2010 16:55:57 208.126.133.204 153345 Report to Moderator	Re: Case 300 or 300B in reply to Bill Holton, 03-15-2010 20:44:20   I'm with Joe (Wa) The engine oil may be darker in color like the dip stick, and I hope the hydraulic oil looks clean. These tractors are relatively easy to split. You need a hoist of some sort to keep the engine upright. The seals are a CASE only part no but any bearing place can order them.   [Reply]   [No Email]
Bill Holton 03-18-2010 09:10:35 75.100.253.227 153402 Report to Moderator	Re: Case 300 or 300B in reply to BarryfromIA, 03-16-2010 16:55:57   The hydraulic oil is clean and no apparent leakage from the engines. I located a slight leak at a line from the hyd pump to the rear on the tractor. So probably a seal and a leaky fitting.   [Reply]   [No Email]
Joe (Wa) 03-16-2010 20:41:46 66.248.46.200 153354 Report to Moderator	Re: Case 300 or 300B in reply to BarryfromIA, 03-16-2010 16:55:57   Barry, an update on these seals. Case used mostly, or all?, National seals on 300 & 300B. The Natl p/n will be stamped on the seal, if original and will cross to CR. Case p/n for these seals cross to CR also and are readily avail at Napa and other parts vendors. Main drive shaft seal Case p/n G10421 > CR11740. Hyd pump drive shaft seal Case p/n G10421 > A155950 > CR15592. Factory engine rear main seal (and listed in original parts Catalogs) Case p/n G10005 > CR33711. This is an CRWH1 type. Aftermarket engine overhaul gasket kits I have bought have this CR33711 seal. Later upgrade engine rear main seal Case p/n G13825 > CR33712. This is a CRWHA1 type and a much better seal for this purpose. It is about $10 more than the CR33711 seal. You can cross-ref these p/n's at the link and click on SEALS NORTH AMERICAN INTERCHANGE. Check the cross section pics for the difference between CR33711 & CR33712. Joe http://www2.chicago rawhide.com/   [Reply]   [No Email]
hoss54 04-05-2010 13:06:47 99.168.79.159 154221 Report to Moderator	Re: Case 300 or 300B in reply to Joe (Wa), 03-16-2010 20:41:46   If anyone wants to save some money on seals and bearings, go to this site. http://www.jbr17llc.com/ I just ordered the front and rear mains, (the #33712 seal front) and the seals for the tach drive on my 310B. Total including shipping was like $66.00. That rear main at Case/IH is $45.00. These are CR seals, and they handle Timken U.S.A. bearings for a fraction of cost of local distributors. ie Bearings Inc. and NAPA.. Copy and paste those part numbers, and see for yourself.. They saved me a bunch of money..!!   [Reply]   [No Email]
Bill Holton 03-18-2010 09:07:28 75.100.253.227 153400 Report to Moderator	Re: Case 300 or 300B in reply to Joe (Wa), 03-16-2010 20:41:46   Thanks Joe, I'll probably wait til fall/winter to tackle the replacement. I'll just use extra hydraulic fluid every time I use the Case.   [Reply]   [No Email]
Joe (Wa) 03-16-2010 11:37:58 66.248.34.162 153338 Report to Moderator	Re: Case 300 or 300B in reply to Bill Holton, 03-15-2010 20:44:20   Determine whether the leak is engine oil or hydraulic oil. 1. Engine oil leaks at crankshaft rear main seal. 2. Hydraulic oil leaks from torque tube via the hyd pump drive shaft seal (shown) or the main drive shaft seal (internal) mounted in the same housing. Joe   [Reply]   [No Email]
Bill Holton 03-18-2010 09:26:05 75.100.253.227 153407 Report to Moderator	Re: Case 300 or 300B in reply to Joe (Wa), 03-16-2010 11:37:58   Great pictures Joe, really good advice. Although the tractor looks easy to split, it has a front loader that would need to be removed which adds a real problem since I dont have a lift beefy enough to lift the entire unit. Something I'll have to work on come this fall. Meanwhile I just add hyd oil on a regular basis. I use the tractor mainly for road maintenance in late winter and spring, low hours yearly. It never seems to drop below 10 quarts when I drain the torque tube to check the total content. So I dont think it harms the pump to run a little low. I only operate about 1 to 2 hours at a time which seems to leak 1 or 2 qts. Thanks for the advice. and pix.   [Reply]   [No Email]
Joe (Wa) 03-18-2010 11:41:29 66.248.34.140 153410 Report to Moderator	Re: Case 300 or 300B in reply to Bill Holton, 03-18-2010 09:26:05   The torque oil capacity is 12 qts with triple range or shuttle and 14 qts w/o either so you're getting very marginal regarding pump damage. Your post implies an internal migration of torque tube oil to the transmission case via the Eagle hitch piston seals and/or the drive shaft/pto shaft seals at the front and rear of the transmission. This is very common in the 300/300B series. Check and adjust the oil level in your transmission to the mark on the dipstick and then check that level when you have torque tube oil loss. Chances are your transmission oil level is very high now. The transmission oil capacity ~15 qts and ~28 qts respectively for utility and general purpose tractor models in the 300/300B series. It takes quite a lot of oil migration from the torque tube to make a significant height rise in the transmission oil level due to the increased area as the axle housings flood. Something like 3-4 qts raises tranmission oil level an inch or so. Joe   [Reply]   [No Email]
Mike in MD 03-25-2010 17:46:37 68.54.255.147 153715 Report to Moderator	Re: Case 300 or 300B in reply to Joe (Wa), 03-18-2010 11:41:29   Joe, Uh oh. I just bought a 311 which had low hydraulic fluid and high transmission fluid. I"ll have to make note of the levels as you suggest. Are those seals difficult to replace? Sounds like you may have done this before.   [Reply]   [Send Email]
Randy in NE 03-16-2010 03:55:40 204.124.192.31 153331 Report to Moderator	Re: Case 300 or 300B in reply to Bill Holton, 03-15-2010 20:44:20   It could be the rear engine seal leaking into the torque tube and then onto the ground. You would have to split the tractor to replace it.   [Reply]   [Send Email]
Bill Holton 03-18-2010 09:12:52 75.100.253.227 153404 Report to Moderator	Re: Case 300 or 300B in reply to Randy in NE, 03-16-2010 03:55:40   I dont see any loss of engine oil equal to the hydraulic loss. I'm pretty sure its only hyd fluid leaking. Thanks for the advice.   [Reply]   [No Email]
Tinytractor 03-16-2010 01:51:33 97.120.29.252 153330 Report to Moderator	Re: Case 300 or 300B in reply to Bill Holton, 03-15-2010 20:44:20   If the tractor has the gear type transmission there is not gasket at this connection but if it is a Casomatic it does. You may as you say have a leak on the torgue tube itself or from the hydrualic pump as well.   [Reply]   [Send Email]
Bill Holton 03-18-2010 09:16:42 75.100.253.227 153405 Report to Moderator	Re: Case 300 or 300B in reply to Tinytractor, 03-16-2010 01:51:33   Not a caseomatic, I have located a small leak at the fitting running from the hyd pump to the rear. However, that is not enough to account for all the oil. So probably a seal and a fitting leak.   [Reply]   [No Email]