TM 9-1240-400-34&P
4-11.
FINAL INSPECTION INSTRUCTIONS (CONT).
ASSEMBLYAND ALINEMENT OF V-BLOCK ADAPTER ASSEMBLY (CONT)
6
Install dial indicator (14) to vernier height gage (15), to indicate a true horizontal plane, within 0.001 TIR, along the top
surface of parallel bar (13). Loosen C-clamp (7), if necessary, to move V-block adapter (8).
7
Place 1.00-in. (2.54 cm) diameter dowel pin (16), 6.00 in. (15.24 cm) long, on V-block (1) and secure by tightening
screw (6).
8
Loosen two screws (3). Tap lightly on dowel pin (16) until it indicates horizontal to parallel bar (13) within 0.001 in.
(0.025 mm). Tighten two screws (3) and recheck dowel pin (16) to make sure V-block (1) did not move.
9
Recheck parallel bar (13) by using dial indicator (14), attached to vernier height gage (15), to indicate a true horizontal
plane, within 0.001 TIR, along the top surface of parallel bar (13). Loosen C-clamp (7) to remove V-block adapter (8).
10
Remove V-block adapter (8) from plate (9).
11
Remove plate (9) from surface plate (11).
12
Remove two dowel pins (12) from V-block adapter (8).
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