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Put together some info. that might help owners understand the basic configuration. ALLISON TRANSMISSION MOTORHOME SERIES™ RATINGS MODEL SERIAL RATIO PARK MAX INPUT MAX INPUT MAX INPUT TORQUE MAX TURBINE MAX GVW MAX GCW hp NUMBER PAWL POWER-1 TORQUE-1 w/SEM TORQUE LIMITING-2,3 TORQUE-3 HP / k W ft lb.(N/m) lb.-ft (N/m) lb.-ft (N/m) lbs. / kg lbs./ k g 1000 MH 6310 MH Close Ratio Yes 340-4,5(254)4,5 575 (780) 660-4,5 (895)4,5 950/4 (1288)4 22,000 (10,000) 26,000 (11,800) 1000 MH 6310 MH Close Ratio Yes 340-4,5(254)4,5 575 (780) 660-4,5 (895)4,5 950/4 (1288)4 22,000 (10,000) 26,000 (11,800) 1000 MH xFE 6310 MH Close Ratio Yes 340-4,5 (254)4,5 575 (780) 660-4,5 (895)4,5 950/4 (1288)4 22,000 (10,000) 26,000 (11,800) 1350 MH 6310 MH Close Ratio Yes 340-4,5 (254)4,5 575 (780) 660-4,5 (895)4,5 950/4 (1288)4 22,000 (10,000) 30,000 (13,600) 1350 MH xFE 6310 MH Close Ratio Yes 340-4,5 (254)4,5 575 (780) 660-4,5 (895)4,5 950/4 (1288)4 22,000 (10,000) 30,000 (13,600) 2100 MH 6310 MH Close Ratio No 340-4,5 (254)4,5 575 (780) 700-4,7 (950)4,7 950/4 (1288)4 26,000 (11,800) 30,000 (13,600) 2100 MH xFE 6310 MH Close Ratio No 340-4,5 (254)4,5 575 (780) 700-4,7 (950)4,7 950/4 (1288)4 26,000 (11,800) 30,000 (13,600) 2200 MH 6310 MH Close Ratio Yes 340-4,5 (254)4,5 575 (780) 700-4,7 (950)4,7 950/4 (1288)4 26,000 (11,800) 26,000 (11,800) 2200 MH xFE 6310 MH Close Ratio Yes 340-4,5 (254)4,5 575 (780) 700-4,7 (950)4,7 950/4 (1288)4 26,000 (11,800) 26,000 (11,800) 2350 MH 6310 MH Close Ratio Yes 340-4 (254)4 575 (780) 700-4,7 (950)4,7 950/4 (1288)4 30,000 (13,600) 30,000 (13,600) 2350 MH xFE 6310 MH Close Ratio Yes 340-4 (254)4 575 (780) 700-4,7 (950)4,7 950/4 (1288)4 30,000 (13,600) 30,000 (13,600) 2500 MH 6310 MH Wide Ratio No 340-4,5(254)4,5 575 (780) 700-4,5,6(950)4,5,6 950/4 (1288)4 33,000 (15,000) 33,000 (15,000) 2500 MH xFE 6310 MH Wide Ratio No 340-4,5(254)4,5 575 (780) 700-4,5,6(950)4,5,6 950/4 (1288)4 33,000 (15,000) 33,000 (15,000) 2550 MH 6310 MH Wide Ratio Yes 340-4(254)4 575 (780) 700-4,7 (950)4,7 950/4 (1288)4 30,000 (13,600) 30,000 (13,600) 2550 MH xFE 6310 MH Wide Ratio Yes 340-4(254)4 575 (780) 700-4,7 (950)4,7 950/4 (1288)4 30,000 (13,600) 30,000 (13,600) 3000 MH 6510 MH Close Ratio N/A 450(336) 1250 (1695) N/A 1700 (2305) --- -— 4000 MH 6610 MH Close Ratio N/A 650 (485) 1950 (2644) N/A 2800 (3795) —- -— NOTES 1 Gross ratings as defined by ISO 1585 or SAE J1995. 2 SEM = engine controls with Shift Energy Management. 3 Turbine torque limit based on iSCAAN standard deductions. 4 SEM and torque limiting are required to obtain this rating. 5 Check with your OEM to ensure offerings. 6 Available in gears three through five. 7 With 5th Gen controls. In ranges three through five. The Link to this Allison Information. https://www.allisontransmission.com/docs/default-source/marketing-materials/brochures-us/motorhome-series-brochure.pdf?sfvrsn=18b1e21d_2 A personal -Note! Allison uses a 10-amp fuse for power. The 1000 and 2000 series fuses are located in the TCM power supply Harness wiring. The 3000 and 4000 series fuses tend to be located inside the VIM (Vehicle Interface Module) Rich.

Hi Folks, I have a Onan 4000 Microquiet in my Forest River Sunseeker (2007). I just had the fuel pump, air and fuel filters replaced and the unit serviced and cleaned. Now it starts easily and runs quietly, but it doesn't charge anything in the coach...not the outlets, not the fridge, not the AC. I've checked all the breakers in the coach and they are fine. There seems to be a breaker in the Onan which doesn't resolve the problem when switched on or off. (Note: There does seem to be a leak from the valve cover, but it seems that that should be a separate problem.) I'm not sure where to look for a solution. Any suggestions will be appreciated. Thanks, as always. Nan