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| white halftrack
12-07-2012 11:19:05
69.80.123.107
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Hello again everyone. I am working on my late 1961 SOS 971 152xxx tractor. The tractor shifts through all gears well with no problems at all, but in Park, if placed on an incline it rolls down. Is it supposed to do this or should it lock in place? It is a 312259 transmission casting and the fluid level is good filter clean. I adjusted the bands according to the manual and it still shifts everywhere fine, but no park hold. Any suggestions? Otherwise kinda liking this machine.Thanks. Jason
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| Scott Pa
12-08-2012 18:35:54
174.59.8.146
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Re: SOS Operation question in reply to white halftrack, 12-07-2012 11:19:05
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| Try shifting quickly from 5th to park to see if it holds.
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| Kly
12-08-2012 09:56:55
64.147.35.69
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Re: SOS Operation question in reply to white halftrack, 12-07-2012 11:19:05
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| lock the brakes and it won't go anywhere.
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| Dean
12-09-2012 10:52:32
67.172.15.77
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Re: SOS Operation question in reply to Kly, 12-08-2012 09:56:55
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| | Tough to do on the SOS tractors without brake locks. For this very reason, I installed brake locks on my 64 4000 SOS. Dean
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| Larry NCKS
12-08-2012 11:48:29
70.195.1.88
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Re: SOS Operation question in reply to Kly, 12-08-2012 09:56:55
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| Quoting Removed, click Modern View to see
I don't think that addresses his concern. I believe he wants a fix, not a bandaid.
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| white halftrack
12-09-2012 12:08:29
69.80.123.107
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Re: SOS Operation question in reply to Larry NCKS, 12-08-2012 11:48:29
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| Thanks for the responses everyone. I will try the 5 to P trick and
see if it works. If that does not, I will look at readjusting the
linkage. I will report back after I give it a try. It does have the
brake locks, but was afraid I was damaging it.Jason
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| Larry NCKS
12-09-2012 12:50:17
70.197.202.70
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Re: SOS Operation question in reply to white halftrack, 12-09-2012 12:08:29
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| Quoting Removed, click Modern View to see
readjusting linkage?
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| white halftrack
12-09-2012 13:03:37
174.253.148.165
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Re: SOS Operation question in reply to Larry NCKS, 12-09-2012 12:50:17
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| Quoting Removed, click Modern View to see
The cable might not be allowing it to get fully in to park?
Jason
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| Larry NCKS
12-09-2012 17:37:46
70.197.203.32
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Re: SOS Operation question in reply to white halftrack, 12-09-2012 13:03:37
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Possible I guess! I could feel that in the shifter if that were the case, though/
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| showcrop
12-09-2012 12:42:16
75.67.231.80
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Re: SOS Operation question in reply to white halftrack, 12-09-2012 12:08:29
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| Quoting Removed, click Modern View to see
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| pete black
12-08-2012 12:41:45
166.205.55.37
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Re: SOS Operation question in reply to Larry NCKS, 12-08-2012 11:48:29
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| are sos transmission tractors equipped with lockable
brakes? been a few years since i owned one but i
believe my 64 4 cylinder diesel was not equipped
with lockable brakes.
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| Larry NCKS
12-08-2012 15:18:02
70.195.1.88
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Re: SOS Operation question in reply to pete black, 12-08-2012 12:41:45
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| Quoting Removed, click Modern View to see
the early 01s were, if not all the 01s. the 4 cylinder 000s were not. I can't speak to the '65 - '74 models
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| soundguy
12-08-2012 12:54:40
184.247.155.167
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Re: SOS Operation question in reply to pete black, 12-08-2012 12:41:45
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| no pawls?
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| pete black
12-08-2012 13:30:19
166.205.55.17
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Re: SOS Operation question in reply to soundguy, 12-08-2012 12:54:40
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| now i remember, thanks.
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| pete black
12-08-2012 12:41:44
166.205.55.37
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Re: SOS Operation question in reply to Larry NCKS, 12-08-2012 11:48:29
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| are sos transmission tractors equipped with lockable
brakes? been a few years since i owned one but i
believe my 64 4 cylinder diesel was not equipped
with lockable brakes.
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| showcrop
12-07-2012 15:48:26
75.67.231.80
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Re: SOS Operation question in reply to white halftrack, 12-07-2012 11:19:05
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| I use my 971 quit a lot in the summer. Before the SOS warms up, it will creep for a second or two in park, but once it gets warmed up it is pretty much instantly in.
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| awhtx
12-07-2012 15:37:09
207.13.78.201
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Re: SOS Operation question in reply to white halftrack, 12-07-2012 11:19:05
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| Many SOS operators have reported that the tractor will roll a bit after P is selected. The most common cure is to place the selector in 5 (IIRC) and then quickly move it to P. Fortunately I've never had this problem with either of my SOS tractors (971 & 5000).
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| Larry NCKS
12-07-2012 15:34:00
70.195.1.88
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Re: SOS Operation question in reply to white halftrack, 12-07-2012 11:19:05
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| B2 & B3 make Park on that machine. These are spring applied. It seems odd that all ratios work and it still rolls away in Park. Are you sure you have the proper manual? Something surely sounds off on band adjustment to me.
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| Dean
12-07-2012 11:56:51
152.216.3.5
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Re: SOS Operation question in reply to white halftrack, 12-07-2012 11:19:05
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| | The transmission should lock the driveline when in Park though there will likely be a delay prior to engagement. Dean
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| soundguy
12-07-2012 11:34:05
184.4.146.28
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Re: SOS Operation question in reply to white halftrack, 12-07-2012 11:19:05
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| | here's a link to john smith's sos troubleshooting. i'd check that first one.. as it sounds like it is going to neutral in park, assuming it is adjusted correctly and actually making it to park.
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