EPA07/10 DD PLATFORM WORKSHOP MANUAL - ENGINE
40.3 INSTALLATION OF THE POLY-V-BELTS
Install as follows:
NOTE:
If tensioners are pre-tensioned, start at step 9.
1. Install a half-inch extension into the square hole on the grooved pulley idler arm.
2. Turn the grooved pulley idler arm counterclockwise. Maximum allowable torque is
90-100 N·m (66-73 lb·ft).
3. Insert an M10x80 bolt (or equivalent pin), into the bracket hole in the grooved pulley
idler arm.
4. Release the idler arm. The grooved pulley idler arm is now locked in a pre-tensioned
position.
5. Install a half-inch extension into the square hole in the non-grooved pulley idler arm
bracket.
6. Turn the non-grooved pulley idler arm counterclockwise. Maximum allowable torque is
90-100 N·m (66-73 lb·ft).
7. Insert an M10x80 bolt (or equivalent pin), into the bracket hole on the non-grooved pulley
idler arm.
8. Release the idler arm. The non-grooved pulley idler arm is now locked in a pre-tensioned
position.
9. Install the poly-V-belts onto the pulleys.
10. Ensure the belts are properly installed on the pulleys.
11. Install a half-inch extension into the square hole (V) on the non-grooved idler arm.
12. Turn the non-grooved pulley idler arm counterclockwise until the pin holding the idler
arm can be removed. Remove the pin.
13. Install a half-inch extension into the square hole in the grooved pulley idler arm.
14. Turn the grooved pulley idler arm counterclockwise until the pin holding the grooved
pulley idler arm can be removed. Remove the pin.
All information subject to change without notice.
DDC-SVC-MAN-0081 2010
Copyright © 2010 DETROIT DIESEL CORPORATION
40-9
Summary of Contents for EPA07
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