TM 5-5420-278-24&P
0030 00
0030 00-2
LOWER LOCK-DRIVE MAINTENANCE (Contd)
NOTE
Both yokes are removed and installed the same way. Both yokes
are shown. Right yoke contains connecting pin, trunnions, and
lever, and is disassembled and assembled the same way.
REMOVAL
1.
Place pump selector valve in UP position, and extend cylinder rod end (31) until pin (4) is clear to
be removed.
2.
Support cylinder rod end (31) and remove two cotter pins (3), washers (5), and pin (4) from yoke (6)
and cylinder rod end (31). Discard cotter pins (3).
NOTE
Assistant will help with steps 3 and 4.
3.
Support yoke (6), and remove two cotter pins (1), washers (2), and pins (32) from inner ponton
brackets (33) and (34) and yoke brackets (29) and (30). Discard cotter pins (1).
4.
Lift yoke (6) from brackets (34) and (33).
DISASSEMBLY
1.
Remove four screws (19), lockwashers (20), and retainer (18) from trunnion nut (22) and yoke
brackets (28). Discard lockwashers (20).
2.
Remove four screws (16), lockwashers (15), and lever retainer (14) from trunnion nut (13) and
bellcrank lever (8). Discard lockwashers (15).
3.
Remove jackscrew (17), washer (21), and trunnion nuts (22) and (13) from yoke brackets (28) and
bellcrank lever (8).
4.
Remove washer (21), trunnion nut (22), and trunnion nut (13) from jackscrew (17).
NOTE
Note location and quantity of shims for installation.
5.
Remove spring pin (26) from yoke (6) and pin (27).
6.
Remove spring pin (24), pin (23), and connecting link (12) from bellcrank lever (8)
7.
Remove pin (27), bellcrank lever (8), and shims (7) from yoke (6).
8.
Remove lube fitting (25) from bellcrank lever (8).
9.
Remove spring pin (9), pin (11), and link (12) from connecting pin (10).
10.
Remove connecting pin (10) from yoke (6).
