JLG TF6-42 Service Manual - Manuale (Pagina 664)

T12000 ID 04/99 4-5
Maintenance
4.4 INSTRUCTIONS FOR LINING REPLACEMENT AND ADJUSTMENT OF PARKING BRAKE ASSEMBLY
1. Loosen two adjustment locking nuts (4 & 5) enough to slide each torque plate (16 & 18) away from disc
far enough to provide clearance to remove old carrier and lining assemblies and install new ones.
(It may be necessary to remove one or both nuts).
2. Collapse lining retraction spring (21) and remove from brake head assembly.
3. Slide torque plates (16 & 18) away from disc, move carrier and lining assemblies (17) out of pockets,
and remove from the brake head assembly from the side.
4. Install new carrier and lining assemblies (17) in each torque plate (16 & 18).
5. Install lining retention spring (21) into brake head assembly.
Be sure spring’s “feet” are positioned properly in holes in both lining carrier assemblies (17).
6. Tighten inner adjusting nut (5) until firm contact is made with the disc by the linings.
Torque to (100 lbs.-inch) 11 N.m make certain lever is in proper operating position for application.
7. Back off inner adjusting nut 4 (5) to 5 flats and check that disc is free to move
(total clearance 0.8 - 1.1 mm (0.031” - 0.043”)).
8. Tighten outer locking nut (4) against inner adjusting nut to lock adjustment bolt in place.
Torque to (45 to 55 lb.-ft.) 61 - 75 N.m.
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