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Allison CRT3331

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Allison CRT3331

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Description

RATINGS

Net Input Torque Lb-Ft (N.M) Net Input Power HP (kw) Vocations
CRT3331-3 Straight Thru 375 (508) 70 (52) Foundation Drilling Rigs, Auger Drilling, Oil Field Pulling Units, Material Handling, Forklifts, Waterwell Drilling Rigs, Marine Winches, Barge Winches, Waterfall Winches, Custom.
CRT3331-1 Drop Box 375 (508) 70 (52) Forklifts, Material Handling, Winches, Loaders, Skidders, Trucks, Railcar Movers, Lifting, Hoisting, Locomotive, Cranes.

ENGINE INTERFACE

  • Acceptable full-load engine governed speed: 1900 – 3000* rpm
  • Minimum engine idle speed (transmission in Drive) 500 rpm

MOUNTING

  • Direct: SAE No.3 Cradle mount using engine flywheel hsg mounting pads, four bolts on rear cover and four-bolt on dropbox
  • Remote: Front trunnion support, four-bolt on rear and four-bolt on drop box.

TORQUE CONVERTER

Model Stall Torque Ratio Kp-Factor* at Stall
TC-320 3.50 64.4 (75.0)
TC-350 3.09 34.7 (40.4)
TC-370 2.47 40.7 (47.3)

MECHANICAL RATIOS (Gear ratios do not include torque converter multiplication)

Range Forward Reverse
Low 8.00 : 1 7.75 : 1
Intermediate 2.09 : 1 2.81 : 1
High 1.00 : 1 0.97 : 1

NOTE:

  • Range Gearing – Constant Mesh, Spur, Planetary.
  • Clutches – Hydraulic-actuated, spring-released, oil-cooled, multidisk, self-adjusting (automatic compensation for wear)
  • SAE 3 flywheel housing with grease gear or flex disk drive mounting Remote mounted (front) Input flange or Torqmatic® coupling Direct and remote mounted (rear) 6-hole mounting pad on each side (-1 models); 4 tapped holes in adapter housing (-3 models).

Drop Box Ratios: 0.66 : 1 (standard), 0.79 : 1 (optional), 1.62 : 1 (CRT3331-1 Drop Box Model Only)

CONTROL SYSTEM

Description: Hydraulic, Power Shift with Range Selection Spool & Direction Shifting Spool. Manual Inching valve or clutch cutoff valve are optional.

Shift Sequences Transmission is “Power Shifted” to select each gear without applying a clutch. Revers to Forward operation requires vehicle or machine to have output shaft fully stopped from rotating.
Driver-to-Transmission Interface Customer-furnished cab-mounted shift selector

PHYSICAL DESCRIPTION

Length Dry  Weight
Drop Box -1 Models (transfer gear) 43.61 in (1108 mm) 1260 lbs (372 kg)
Straight Thru -3 Models (sump tank) 46.59 in (1183 mm) 955 lbs (434 kg)
Height (with direct mount oil cooler) -1 Drop Box Models, 39.17 in (995 mm) -3 Straight Thru Models, 27.89 in (708 mm)

PUMP HUB GEAR, CHARGE PUMP-DRIVEN POWER TAKE-OFF PROVISION (OPTION)

PTO drive Engine-driven spur gear
PTO mounting pad SAE C, 4 Bolt PTO Pad (located on back side of charge pump)
PTO drive gear ratio 7 o’clock position 1.00 x engine speed
PTO drive gear rating
  • Intermittent: 80 hp (60 kW)
  • Continuous: 50 hp (37 kW)

OIL SYSTEM

Oil Type 15-40 (motor oil), 0-30W (motor oil), ATF (Current), Allison Transynd
Capacity Excluding external circuits
  • CTR3000-1 Drop Box Models 71/2 gal (28 liters)
  • CTR3000-3 Straight Thru Models 9 gal (34 liters)
Sump Tank for 3 models is standard or optional, Copeland Style 1, Style 2 & Style 3 (customer furnished option available)
Main Circuit Oil Filter Replaceable element, Remote mounted
Cooler circuit oil filter (optional) Direct Mount (Top of Converter), or Remote-mount.

SPEEDOMETER PROVISIONS (OPTIONAL)

  • TYPE: SEA Heavy duty 5/32 inch drive
  • Speed: Same as transmission range speed.

DROP BOX OUTPUT OPTIONS – iNTEGRAL DROP BOX

position B output Flange (see flange list) with optional output parking brake on straight thru models only, brake type drum with shoes. Output flange available on drop box models)
position C output Flange (see flange list), Heavy Duty output is available
position D output Flange (see flange list), Heavy Duty output is available. Optional output parking brake is available on drop box models, brake type drum with shoes.

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