Hitachi Zaxis 850LC-3 Operator's Manual page 204

WARNING: Be sure to slowly operate the boom. If
quickly operated, the lever block and/or wire rope
may be damaged and/or fly away, possibly causing
severe personal injury.
Stay away from the machine when operating the
boom.
10. Slightly slacken wire rope tension by operating lever
blocks (5) and raise the boom to slightly lower the track
frame. Do not slacken wire rope tension excessively. Also,
take care not to lower the track frame excessively. If ex-
cessively slackened or lowered, side frame (3) will retract
making re-tightening (by hand) of bolts difficult.
11. After slightly lowering track frame (2), re-tighten bolts (1)
by hand.
12. Repeat steps 10 and 11 three to four times until the track
frame is completely lowered to the ground.
13. Slacken the lever blocks. Remove the lever blocks and
wire ropes.
14. Tighten bolts (1) with the power boost wrench and
torque wrench to specification.
Tightening Torque: 2800 N•m (280 kgf•m, 2025 lbf•ft)
IMPORTANT: Be sure to apply a film of lubricant to the
bolt threads.
15. Extend the side frame on the opposite side in the same
procedure.
Model
ZAXIS850 ,
-3
850LC ,
-3
870H ,
-3
870LCH
-3
TRANSPORTING
Bolt Size Width across Flats (mm)
M36-Pitch 3
1
55
6-24
5
Torque
N•m (kgf•m, lbf•ft)
2800 (280, 2025)
M166-01-256
3
2
M162-06-002
Note