5-20 OUTPUT SHAFT
(SHEET 2 OF 3)
This check is performed on a dry transmission (a transmission not filled with oil). Each output
shaft in a dry transmission should rotate with the application of 20 pound feet (27 Nero) of
torque. When rotation of the output shaft produces a torque reading higher than 20 pound feet
(27 Nm), the side with the faulty drag must be disassembled and checked for missing parts or
parts improperly installed.
A high drag check torque reading on a wet transmission should not be interpreted
as indication of a problem.
For example, a transmission full of oil may produce a
normal drag check reading of 50 pound feet (68 Nm), or more, because of all the
oil being moved around. However, an uneven drag check reading, such as 50
pound feet (68 Nm) on one shaft and 40 pound feet (54 Nm) on the other shaft,
would indicate something binding in the side with the high reading.
When the is excessive drag on one output shaft, there will probably also be excessive drag on
the other output shaft.
The output shaft with the higher torque reading represents the side of
the transmission which must be disassembled.
Output Shaft Drag Check
TASK 1. OUTPUT SHAFT DRAG CHECK
Chisel, cold, 3/8 inch
Extension, socket wrench 1/2 inch square
Hammer, hand, ball peen
drive, 6 inch
Handle, socket wrench 1/2 inch square drive
P u n ch$ center, tapered point
Socket, socket wrench, 1/2 inch square drive, 3/4 inch
Wrench torque, 0-175 ft-lb
Go to Sheet 3
Para. 5-2, Task 1