Hitachi ZW 100-G, Workshop Manual

Page: 47 / 61

GENERAL / Tightening
W1-2-3
Precautions for Spilt Flange
IMPORTANT:
•
Clean the sealing surfaces. Check if there are
any scratches and roughness on the surface
of the seal that cause oil leaks and damage to
the O-ring.
•
Use only specified O-rings. Inspect O-rings for
any damage. Do not file the O-ring surfaces.
When installing O-ring into a groove, use
grease in order to hold O-ring in place.
•
While tightening the bolt by hand, check that
flange is installed to the port correctly. Do not
pinch the O-ring.
•
Tighten the bolts up and down, left and right
alternately, in order to ensure even tightening
to the specified torque.
•
Do not use air wrenches. Using an impact
wrench often causes tightening of one bolt
fully before tighten the others, resulting in
damage to O-rings or uneven tightening of
bolts.
Nut and Bolt Locking
•
Lock Plate
IMPORTANT: Do not reuse the lock plates. Do not
try to bend the same point twice.
•
Split Pin
IMPORTANT: Do not turn in the loosening
direction in order to align the
grooves and holes on the nut.
Always turn in the tightening
direction. Do not reuse the split
pins.
•
Wire
IMPORTANT: Attach wire to bolts in the
bolt-tightening direction. Do not
reuse the wire.
W105-01-01-015
W105-01-01-016
W105-01-01-008
W105-01-01-009
W105-01-01-010
c
d
Incorrect
Correct Correct Incorrect
Correct Incorrect
a
b
a - Bend along edge sharply b - Do not bend it round
c - Tighten d - Loosen
Correct Correct Incorrect
Correct Incorrect