A20 Series PTO

For Allison 3000 & 4000 Transmissions

THE A20 IS THE NEW 10-BOLT MEDIUM-DUTY, CLUTCH SHIFT PTO rated for up to 415 lbs.ft. torque intermittent/continuous and features various product improvements allowing for easier installation and a more durable PTO for Allison 3000 and 4000 Series transmissions.

Target Markets

  • Class 7–8 trucks with automatic transmissions

  • Dump, Fire, Refuse, Utility, Tow & Recovery, Snow & Ice, & Bulk Hauling
CONFIGURE YOUR PTO

Start with your transmission. Follow these easy steps. 
A20_rotatable_flange_01MAR2021sm-4

Key Features

• New rotatable pump flange

• Increased clearance for easier installation

• Shift cover allowing 360-degree rotation

• Proven clutch pack design

• Tapered roller bearings increasing PTO life

• Increased output shaft diameter for higher durability

• Reduced leak paths

• Maximized gear design for noise reduction

• Single intermittent/continuous torque rating

• Three housing arrangements

• Extended length PTO mounting fasteners

• Compatible with EX Drive shaft extension

• Available with Muncie Start® to eliminate torque spikes

• Tool kit available for easier installation

 

 

SPEED

RATIO

3000 SERIES

ENGINE %

4000 SERIES

ENGINE %

INTERMITTENT CONTINUOUS HP (KW)

@ 1,000 RPM

INTERMITTENT/CONTINOUS

TORQUE LBS.FT. (NM)
05 74% 105% 77 (57) 400 (542)

06

 85% 122% 77 (57) 400 (542)

07

 99% 141% 79 (59) 415 (563)

08

 114% 163% 69 (51) 360 (488)

09

 122% 175% 65 (48) 340 (461)

10

 131% 187% 59 (44) 310 (420)

11

 151% 215% 52 (39) 275 (373)

12

 162% 231% 50 (37) 265 (359)

15

 201% 287% 39 (29) 205 (278)

 

Available WITH The Muncie Start®

MUNCIE START® – an electronically controlled, modulated clutch engagement system from Muncie Power Products – eliminates torque spikes through the power take-off, truck drivetrain and mounted auxiliary equipment upon startup for high-inertia loads. Allowing for a smooth engagement of the power take-off, Muncie Start increases the life of the PTO and driven mechanical components.

A20_Muncie-Start

AVAILABLE WITH THE EX DRIVE SHAFT EXTENSION

The Muncie EX Drive was designed to fit on Allison 3000 and 4000 series transmissions with retarder or cooler, and allows for large gear or piston pumps to be direct mounted, eliminating the need for timely driveline installations. The EX Drive provides maximum torque from the PTO, and is available for the A20 Series PTO.

A20_EX_Drivew_tweaked

 
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