4-60. COUNTERBALANCE MAINTENANCE (M313) (Cont).
CLEANING AND INSPECTION I
Dry cleaning solvent, P-D-680, Is toxic and flammable. Always wear protective goggles
and gloves, and use only In a well-ventilated area. Avoid contact with skin, eyes, and
clothes, and DO NOT breathe vapors. DO NOT use near open flame or excessive heat.
The solvents flash point is 10O0F-138°F (38 C-590C). if you become dizzy while
using cleaning solvent, immediately get fresh air and medical help. if solvent contacts
eyes, Immediately wash your eyes and get medical aid.
Clean all parts with dry cleaning solvent and dry thoroughly.
Inspect wire rope assembly for wear, breaks, kinks, or frayed areas.
Inspect connecting link and adjusting arms for cracks, bends, or breaks. Straighten any minor bends.
Inspect groove pulleys for excessive wear or cracks.
Inspect counterbalance bar for cracks, bends, or breaks. Straighten any minor bends.
Inspect all mounting hardware for cracks or damaged threads.
Replace or repair all defective parts as necessary.
d. ASSEMBLY I
Position adjusting arms (13 and 14) together with slotted holes alined. Install two new rivets (17) in slotted holes.
Position bracket (15) in place on end of adjusting arm (1 4). Install new rivet (16) in bracket and adjusting arm.
Aline hole in one end of connecting link (2) with middle hole in counterbalance bar (1 O). Install new rivet (23).
Position bracket (3) in place on end of connecting link (2) and install new rivet (1).
i n s t a l l a t i on
Position four guide clip assemblies (11) and counterbalance bar (1 O) in place on corner post (22) and install two
screws (21 ).
Position two brackets (3 and 15) in place on hinged roof and floor, and install four screws (4).
Thread turnbuckle end of wire rope assembly (6) down through four cable guides (20).
Aline holes In end of adjusting arm (13) with holes in corner post (22). Position lower groove pulley (7) in channel
of adjusting arm with wire rope assembly (6) behind groove pulley.
Screw lower end of wire rope assembly (6) in turnbuckle assembly (18).