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  1. Off-highway Series 9800 Straight-Thru Model S9805 Oil Field Pumping (Twin Installation) S9806 1750 (1305) 4870 (6603)Oil Field Pumping S9820 6100 (8270)Oil Field Pumping ...

  2. 14 de mar. de 2008 · The main lock up solenoid goes from 97% locked to 15% and then back on. If he manually locks the torque converter using the tech 2 it runs fine. There are no codes poping, and it would seem all the sensore are working correctly. He has even relearned and tried replacing the Trans computer, drive train Computor, and main ECU.

  3. 9 de jun. de 2017 · The Allison tries to protect the torque converter as though it is the stock unit and not a robust aftermarket unit capable of locking up even where there's slip that would be detrimental to the factory parts. We add the lockbox to force the application of lockup when it isn't happening to our satisfaction otherwise.

  4. 15 de out. de 2008 · I would first pull the spin -on filter and cut it open and see what you see. The filter is about 8 bucks at an Allison dealer. Then clear the codes and see what happens. It could also be the NSBU going out as something has to be telling the clutch pack to engage so you get the tie up. 2004.5 LLY SC 2wd. 2006 LBZ CC 4wd.

  5. This manual provides troubleshooting information for Allison Transmission Division, 5000, 6000, 8000, and 9000 Series Off-Highway Transmissions which have CEC 2. Service Manuals SM1866EN (5000, 6000), SM1228EN (8000) and SM1833EN (9000), plus Parts Catalogs PC1860EN (5000, 6000), PC1249EN (8000) and PC1830EN (9000) may be used in conjunction ...

  6. 1 de jan. de 2008 · Sounds like the valve that keeps pressure up when the converter locks. Stock it drops from something like 180 with the converter unlocked to something like 100 with it locked. Those numbers are probably wrong, but you get the idea. If that's the valve I'm thinking of it prevents the drop at lockup.

  7. 21 de out. de 2014 · This is a dyno session of an Allison Transmission model S9800 also covers models S9810, S9820, S9806, S9805. This is an oilfield transmission for a frac pum...