Allison CL(B)T755

Allison CL(B)T755

Category:

Description

Ratings
Model Net Input Torque N*m (lb-ft) Net Input Power  kW (hp) Turbine Torque N*m (lb-ft) GVW kg (lbs) GCW kg (lbs) Vocations
General 1871 (1380) 332 (445) 3688(2720) 61,236 (1,35,000) 102,060 (2,25,000) Off-Hwy. Dump/Haul Truck, Rough Terrain Mobile Equip
Oil Field (Stationary) 2135 (1575) 373 (500) 4056(2992) n/a (n/a) n/a Oil Field Pumper
Crash Truck & Crane Carrier 2135 (1575) 373 (500) 3688(2720) 102,060 (2,25,000) 102,060 (2,25,000) Airport Crash Truck, Crane Carrier
On Highway Truck 1945 (1435) 332 (445) 3688(2720) 102,060 (2,25,000) 102,060 (2,25,000) Logging, Construction, Line Haul, Lowboy

ENGINE INTERFACE

  • Acceptable full-load engine governed speed: 1800-2500 rpm
  • Minimum engine idle speed (transmission in Drive): 500 rpm

MOUNTING

  • Direct: To SAE No.1 engine flywheel housing, plus rear support.
  • Remote: Six-bolt mounting pads on converter housing, plus rear support.

TORQUE CONVERTER

Model Stall Torque Ratio Kp-Factor* at Stall
TC-470 2.83 64.4 (75.0)
TC-487 1.50 34.7 (40.4)
TC-488 1.70 40.7 (47.3)
TC-490 2.53 57.6 (67.0)
TC-495 1.78 41.3 (48.1)
TC-496 2.72 47.8 (55.7)
TC-497 2.45 46.4 (54.1)
TC-498 1.91 45.1 (52.5)
TC-499 2.63 44.9 (52.3)

MECHANICAL RATIOS

Gear ratios do not include torque converter multiplication)

First 5.18 : 1
Second 3.19 : 1
Third 2.02 : 1
Fourth 1.38 : 1
Fifth 1.00 : 1
Reverse – 9.93 : 1
Alternative Reverse -4.72 : 1
In forward range 5.18

CONTROL SYSTEM

Description Electronically controlled
Shift Sequences [C = Converter Mode (lockup clutch disengaged); L = Lockup Mode (lockup clutch engaged)] 1C–1L–2C–2L–3C–3L–4C–4L–5C–5L
2C–2L–3C–3L–4C–4L–5C–5L
Driver-to-Transmission Interface Customer-furnished cab-mounted shift selector

PHYSICAL DESCRIPTION

Length Dry  Weight
Basic Model 1065 mm (41.9 in) 445 kg (980 lbs)
With engine PTO only 1115 mm (43.8 in) 500 kg (1105 lbs)
With input retarder only 1161 mm (45.9 in) 530 kg (1170 lbs)
With engine PTO & input retarder 1215 mm (47.8 in)
* Length from engine housing to end of output shaft
585 kg (1290 lbs)
Depth (below transmission centerline)
  • Standard 8.5-inch oil pan
  • Optional 7.0-inch oil pan
  • Optional 6.0-inch oil pan
  • 438 mm (17.3 in)
  • 397 mm (15.6 in)
  • 374 mm (14.7 in)

CONVERTER DRIVEN POWER TAKE-OFF PROVISION

PTO drive Turbine-driven spur gear
PTO mounting pad Six-bolt, 10 o’clock position (as viewed from rear)
PTO drive gear ratio 1.00 x turbine speed
PTO drive gear rating
  • Intermittent: 543 N•m (400 lb-ft)
  • Continuous: 407 N•m (300 lb-ft)

 ENGINE-DRIVEN POWER TAKE-OFF PROVISION (OPTION)

PTO drive Engine-driven spur gear
PTO mounting pad Eight-bolt, 1 o’clock and 8 o’clock positions (as viewed from rear)
PTO drive gear ratio
  • 1 o’clock position: 1.35 x engine speed
  • 8 o’clock position: 0.84 x engine speed
PTO drive gear rating
  • Intermittent: 194 kW (260 hp)
  • Continuous: 149 kW (200 hp)

INPUT RETARDER PROVISION (OPTION)

Type Integral, hydraulic
Capacity at 2100 rpm
  • Torque: 1186 N*m (875 lb-ft)
  • Power: 261 kW (350 hp)

OIL SYSTEM

Oil Type C-4
Capacity Excluding external circuits
  • standard 8.5 inch-pan: 40.5 liters (42.8 quarts)
  • Optional 7.0 inch-pan: 28.4 liters (30.0 quarts)
  • Optional 6.0 inch-pan: 28.4 liters (30.0 quarts)
Main Circuit Oil Filter Replaceable element, Remote mounted
Cooler circuit oil filter (optional) Replaceable element, remote-mounted

SPEEDOMETER PROVISIONS

  • Electronic:
  • Location:
  • LS-TTL signal, 16 pulses per output shaft revolution
  • Output signal from transmission ECU
  • Mechanical: (only one may specified
  • Standard Mechanical Driver gear
  • Optional Speed Sensor Gear
  • Location
  • 6 tooth helical drive gear for Mechanical Driver gear
  • 16 tooth gear for magnetic pickup
  • Transmission rear cover