Andrew Type 183 조립 지침 매뉴얼 - 페이지 7

{카테고리_이름} Andrew Type 183에 대한 조립 지침 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Andrew Type 183 20 페이지. 1.8 meter transmit receive antenna system

Yoke Cap and Backframe Assembly

Point yoke cap assembly south and temporarily secure to ground pole with locking bolts. Push M12 x 35 mm round head

square neck pivot bolt through center square hole in cap top plate and attach channel assembly. Secure with M12 hex nut and

lock washer. Torque to 11-15 N-m (8-11 ft-lb). Assemble bottom tube (14) to backframe (28) as shown. Torque M12 x 19 mm

special bolt (29) to 47-54 N-m (35-40 ft-lb). Install backframe assembly onto yoke cap assembly.Secure with M20 x 140 mm

hex bolt and hex nut (9 & 11). Loosen M12 hex bolt (10) and remove one M22 hex nut (7) from elevation adjsting screw (6)

and insert into trunnion (8). Trunnion (8) in position shown is for 12˚ and above elevation. If elevation is less than 13˚, pivot

trunnion 180 degrees. Reinstall M22 hex nut (7). Do not tighten. Run up M22 hex nuts (7) on elevation screw (6) and place

backframe in birdbath position.

SOUTH

Yoke Cap

Assembly

Ground Pole

Antenna Installation

Insert four M12 x 100 mm round head square neck bolts (1) into reflector (2) and place reflector onto backframe. Secure

reflector to backframe with four M12 lock washers and hex nuts (4 & 5). Tighten and torque to 27 N-m (20 ft-lb). Torque

cross arm bolts (12) 4 places to 58 N-m (40-45 ft-lb).

IMPORTANT: "UP" arrow on reflector must be as shown. Make sure round head square neck bolts are seated correctly be-

fore securing reflector to backframe. Pre-torque (4) M12 x 35 m round head square neck bolts (Item 27) to 12 N-m (8-10 ft-lb).

4 Places

Locking

Bolts

14 28

Back Frame

Back View

of Yoke Cap