Precautions For Spilt Flange; Nut And Bolt Locking - Hitachi ZW 100-G Workshop Manual

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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
direction in order to align the
grooves and holes on the nut.
Always
direction. Do not reuse the split
pins.
Wire
IMPORTANT: Attach
bolt-tightening direction. Do not
reuse the wire.
GENERAL / Tightening
turn
in
the
loosening
turn
in
the
tightening
wire
to
bolts
in
Incorrect
Correct
a
Correct
the
a - Bend along edge sharply
Correct
c
c - Tighten
W1-2-3
Incorrect
b
Correct
Incorrect
b - Do not bend it round
Correct
d
Correct
d - Loosen
W105-01-01-015
W105-01-01-016
W105-01-01-008
W105-01-01-009
Incorrect
Incorrect
W105-01-01-010

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