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Allison AT Series Proper Torque Specifications

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  • Allison AT Series Proper Torque Specifications
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Allison AT Series Proper Torque Specifications

DT#25013
Driver cover bolts
(540, 542, 542N, 545, 545N, 1500 series)
57-68 N•m42-50 lb ft
Flexplate nuts46-54 N•m34-40 lb-ft
Transmission to engine boltsTighten to vehicle manufacturer’s specifications
Transmission to frame mounting bolts220-260 N•m164-192 lb ft
Output flange retaining bolt138-164 N•m102-121 lb ft
Companion flange or universal joints bolts Tighten to vehicle manufacturer’s specifications
Manual selector valve nut20-27 N•m15-20 lb ft
PTO mounting bolts35-43 N•m26-32 lb ft
Modulator control retaining bolt14-22 N•m10-16 lb ft
Manual selector lever nut20-27 N•m15-20 lb ft
PTO mounting bolts35-43 N•m26-32 lb ft
Modulator control retaining bolt14-22 N•m10-16 lb ft
Parking brake mounting bolts110-132 N•m81-97 lb ft
Bellcrank and cable support brackets to transmission57-67 N•m42-49 lb ft
Hydraulic line fittings in transmission housing or retarder valve 20-30 N•m15-22 lb ft
Primary cooler fittings in retarder valve body54-68 N•m40-50 lb ft
Fill tube fitting88-102 N•m
w/ 0.675” long oil pan boss:
122-136 N•m
65-75 lb ft
w/ 0.675” long oil pan boss: 90-100 lb ft
Drain plug20-27 N•m15-20 lb ft
Speedometer driven gear assembly to rear cover61-68 N•m45-50 lb ft
Neutral start switch to transmission housing68-81 N•m50-60 lb ft
Reverse signal switch to transmission housing5-7 N•m4-5 lb ft
Modulator retaining bolt14-21 N•m10-16 lb ft
Retarder low speed cutoff switch in transmission housing5-7 N•m4-5 lb ft
Retarder temperature sensor fitting in retarder valve body22-27 N•m15-20 lb ft
Retarder main pressure sensor fitting in transmission housing & in retarder valve body4-25 N•m4-5 lb ft