Allison DP8961

Allison DP8961

Description

Ratings
Product NameNet Input Torque lb-ft (N*M)Net Input Power hp (kW)Turbine Torque lb-ft (N*M)Vocations
DP8961 (Manual Electric, Automatic Electric)3300 (4474)1104 (823)5966 (8089)Oil Field Pumps, Oil Field Service Rig, Fracking, Drilling, Heavy Trucks, Auger, Hauler

ENGINE INTERFACE

  • Acceptable full-load engine governed speed: 1800-2300 rpm
  • Minimum engine idle speed range (with the transmission in Drive): 550rpm

MOUNTING

  • Direct: SAE No.0 flywheel housing with flexplate drive. Cradle mount using engine flywheel
    housing mounting pads and transmission rear cover mounting pads with 0.625-11 inch series bolts
  • Remote: Side pads on transmission rear cover, plus front trunnion mount.

TORQUE CONVERTER

ModelStall Torque RatioKp-Factor* at Stall
TC-8402.2643.2 (37.1)
TC-8602.3340.7 (35.0)
TC-8802.2036.9 (31.7)
TC-8901.8632.6 (28.0)
TC-10701.6828.5 (24.5)

MECHANICAL RATIOS

Gear ratios do not include torque converter multiplication)

First4.24 : 1
Second2.32 : 1
Third1.69 : 1
Fourth1.31 : 1
Fifth1.00 : 1
Sixth0.73 : 1
Reverse 1– 5.75 : 1
In forward range5.81

CONTROL SYSTEM

DescriptionManual Electric, Automatic Electronic
Shift Sequences[C = Converter Mode (lockup clutch disengaged); L = Lockup Mode (lockup clutch engaged)] 1C–1L–2C–2L–3C–3L–4C–4L–5C–5L–6C–6L
Driver-to-Transmission InterfaceCustomer furnished, cab-mounted shift selector

PHYSICAL DESCRIPTION

Length (engine housing to flange face)Basic59.6 in (1836 mm)
WidthBasic34.8 in (884 mm)
Depth (below horizontial center line)20.9 in (531 mm)
Height (above horizontial centerline)
  • Basic:
  • With direct mount filters:
  • 14.6 in (371 mm)
  • 18.8 in (18.8 mm)
Dry Weight
  • Basic:
  • Top engine-driven PTO drive gear:
  • Park Brake (17.25” x 5”):
  • Remote Mount Provision:
  • 3700 lb (1678 kg)
  • Add 30 lb (14 kg)
  • Add 150 lb (68 kg)
  • Add 80 lb (36 kg)

SIDE ENGINE-DRIVEN POWER TAKE-OFF PROVISION

PTO driveEngine-driven spur gear
PTO mounting padEight-bolt, 4 o’clock position (as viewed from rear)
PTO drive gear ratio1.13 x engine speed
PTO drive gear ratingIntermittent: 400 hp (298 kW) and Continuous: 300 hp (224kW)

LIGHT DUTY ACCESSORY DRIVE

Accessory driveEngine-driven, internal spline
Accessory drive mounting padLocation: 4 o’clock position (as viewed from rear of transmission)Orientation: Toward rear of transmission
Accessory drive ratio1.13 x engine speed
Accessory drive ratingTorque: 25 lb-ft (24 N*m)Power: 10 hp (7.5 kW)

TOP ENGINE-DRIVEN POWER TAKE-OFF PROVISION (OPTION)

PTO driveEngine-driven spur gear
PTO mounting padEight-bolt, 12 o’clock position (as viewed from rear)
PTO drive gear ratio1.51 x engine speed
PTO drive gear rating
  • Intermittent: 400 hp (298 kw)
  • Continuous: 300 hp (224 kw)

INPUT RETARDER PROVISION (OPTION)

TypeIntegral, hydraulic – Coupling-type rotor between fixed stators
Capacity at 2100 rpm
  • Torque: 3451 lb-ft (4679 N*m)
  • Power: 1380 hp (1029 kW)

OIL SYSTEM

Oil TypeC-4
Capacity Excluding external circuits21.0 Gallons (79 liters)
Main Circuit Oil Filter
  • Standard: Manifold for full-flow, remote mounted, replaceable element
  • Optional: Direct-mount full flow, replaceable elements (2)
Cooler circuit oil filter (optional)Replaceable element, remote-mounted

SPEEDOMETER PROVISIONS

Mechanical Drive:Location: SAE “Heavy Duty” 5/32-inch; Ratio 1:00: 1
Transmission rear cover

PARK BRAKE PROVISION

  • Type (customer supplied): 17.25 x 4-inch drum
  • Capacity at lever apply force: 200,000 lb-in at 800 lbf (22,600 N*m at 3560N)