Allison AT 542 Transmission core in Lindsay, Ca
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53 Foot Slope Deck Auto Carrier

Allison AT 542 Transmission

Allison AT 542 Transmission general rating+

                                                         AT 542
Net input power (max)............................235 hp (175 kW)
Input speed range,
full load governed......................2400 - 4000 rpm (diesel),
                                      3200 - 4400 rpm (gasoline)
Input speed range,
full load governed w/retarder option....2400 - 3600 rpm (diesel),
                                      3200 - 3600 rpm (gasoline)
Net input torque (max).......................445 lb ft (603 N·m)
Vehicle weight......................Up to 22,050 lbs (10,002 kg)      

Engine...SAE 3 automotive flywheel housing with flex disk drive
Vehicle.....................One vertical mounting pad each side      

Type........................Single-stage, 3-element, multiphase
Stall torque ratio........TC 230-2.60; TC 275-1.96; TC 290-1.72      

Type.........................Constant mesh, spur type planetary

         Range                                  Ratios*:
         First...................................3.45:1
         Second..................................2.25:1
         Third...................................1.41:1
         Fourth..................................1.00:1
         Reverse.................................5.02:1
           * Gear ratio does not include torque converter ratio.      

Converter driven (SAE 6-bolt Regular Duty PTO)
Location............................Right side (viewed from rear)
Drive gear ratio............... All ranges--1.00 x turbine speed
Drive gear rating.................200 lb ft (270 N·m) continuous; 
                                250 lb ft (340 N·m) intermittent      

Oil type..........................Dexron® IIE;, Dexron® III, C 4
Capacity (excluding external circuit)...15 U.S. qts (14.2 liters)
                                                         (approx)
Sump....................................................Integral

     

Length..........................................27.2 in (692 mm)
Width...........................................19.8 in (503 mm)
Height............(with standard 3.8" oil pan)..18.9 in (480 mm)
Depth Below Center Line..........................9.7 in (246 mm)
Weight (dry)....................................289 lbs (131 kg)
Weight (dry w/retarder option)..................329 lbs (149 kg)
+NOTE: Vocational ratings may vary by vocation. 
*NOTE:  The PTO provision is not available on the retarder models.