LESSON 8: REBUILDING THE FAN DRIVE

8.2 Rebuilding
INDEX
page 4 of 5 < PREVIOUS | NEXT >
video clip with audio narrated
Spring Housing/Piston Assembly Reassembly

8. Using a clean/dry cloth, clean the float seal tip (see air cartridge illustration, Step 4) of the air cartridge assembly.

9. Also clean the face seal of the air chamber cap.

10. Assemble the air chamber cap and face seal.

11. Lubricate the O-ring seal with the fresh lubricant supplied in the kit.

12. Install the O-ring seal on the air chamber cap.


13. Carefully set the air chamber cap into the sheave.

14. Install the retaining ring.

15. Install the air chamber seal into the sheave.

16. Be sure the seal is evenly seated against the side and bottom of the groove surfaces.

17. Lubricate contact surfaces with the fresh lubricant supplied in the kit.

18. Carefully set the new spring housing / piston assembly from the repair kit into position.

19. Gently rotate to align the mounting holes in the assembly with the sheave.

20. Set the new friction liner (from kit) into place. Handle the friction liner by the edges to avoid contamination.

21. Alternately and evenly tighten the 8 button head screws to 80 In. Lbs. [9 N•m] torque.

Learning Objectives:
• Describe the steps of safely reassembling the spring housing / piston assembly.

• State lubrication requirements and cautions when reassembling the spring housing / piston assembly.

CAUTION
Use extreme care when reassembling the air chamber components to avoid damage to the O-ring and air chamber seal.

NOTE:
The new face seal is assembled with an O-ring. If the old face seal does not have an O-ring, remove it from the new face seal and apply thread sealant (Loctite® 511 or similar) to the face seal threads.

CAUTION
Do not apply grease beyond seal contact surface as it will cause improper fan drive function.

NOTE:
The entire tube of O-ring lubricant should be used when lubricating the new seals and contact surfaces of the sheave and spring housing / piston assembly.

WARNING
To avoid personal injury, make sure the button head screws are properly tightened to the specified torque before applying air pressure - 80 In. Lbs. [9 N•m].

page 4 of 5 < PREVIOUS | NEXT >

INTRO | LESSON 1 | 2 | 3 | 4 | LAB | REVIEW | SERVICING | LESSON 5 | 6 | 7 | 8 | 9 | 10 | 11 | REVIEW | TEST
DriveMaster® Fan Drive Maintenance Training
© 2007 Horton, Inc., All rights reserved. www.hortonww.com
Privacy Policy
#22742CD-D-0307