R. Cushman & Associates Inc. Power Train Engineers

32840 West 8 Mile Road, Farmington, Michigan 48336

Phone (248) 477-9900 FAX (248) 477-7883

ISO 9001:2008 Cert - 0033879

www.rcushman.com

Specifications

Model 279D

Drawing Number 10716

Combination Right Angle Transfer Case

Description: The Model 279D combines the Right Angle draw works drive with the

Transfer Case and Rotary Table drive in one package. This combination

reduces space and mounting requirements. The right angle drive is air

engaged as are the disconnects powering the rotary table and drive line

output.

Input: Top shaft - 2.75-10 spline, Maximum 16,000 lb-ft input torque, Spicer

1880 series drive flange P/N 8-1-27510

Output: Right angle - Air engaged, opposite the input shaft 1.00:1 ratio with an

extended 3.625 diameter shaft with (2) 0.875 x 0.438 x 6.0 keyways for

the draw works drive sprocket. 11,500 lb-ft maximum torque.

Middle shaft,- Rotary table drive, air engaged disconnect, opposite engine

rotation, 1.1489:1 reduction. 16,000 lb-ft maximum torque. Spicer 1810

series Bearing Plate Yoke P/N 6.5-4-1901

Rear axle disconnect - 0.9787:1 (1.0217:1 speed increasing) Air engaged

disconnect to the rear axles. 16,000 lb-ft maximum torque. Spicer 1710

series Bearing Plate Yoke P/N 6-4-4551

Center distance: 26.015 inches transfer case, right angle shaft end 43.06 from input.

Housing: Cast Ductile Iron.

Lube: 75W-90 GL-5 Synthetic gear lube, 26 quarts. A gear style lubrication

pump mounted on the intermediate shaft provides positive lubrication to

the upper bearings through a remote mounted heat exchanger.

Switches: Packard Weather Pack switches contacts closed when disconnects are

engaged. Requires Packard Weather Pack connectors12015792, Terminals

12089905, and seals 12015359.

Mounting: (4) 1.0-8 x 2.0 mounting holes front cover. Three 1.0-8 x 2.0 tapped holes

on both sides and a 10.000/9.995 diameter pilot on the right angle snout.

Size: 47.25 high, 52.865 wide by 45.3 long.

Weight: 2300 pounds. 08/27/09