AW 375 - Advanced Troubleshooting and Remedies

Possible
Remedy:
A.
Reduce
torque
load
B.
Use
proper
shear
bolts per
chart
NOTE:
When
selecting
the proper
bo1t,
make
sure
the
bolt is
not plated
and
has the
proper
length
of shoulder,
so
you
do
not
drive through
the
thread,
Use
of inroo"rt
shear
pins
can
cause
premature
shearing
or
damage
to
driveline
components
C'
Change
the
rotating
mass
of
the
prime
mover
or dynamometer
or initat
a
teffiJ
coupling
D.
Replace
driveline
E.
Open both
controls prior
to
test
(Refer
to
Section
7)
F.
Refer
to
Section
71,12,
if
unable
to
determine
cause,
consult
factory
for
service
K
Possible
Csuse:
9. Damage
to
water
seals,
bellows,
or
lid
gasket.
A. Excessive
water pressure
B.
Restriction
on final
drain
hose
Possible
Remedy:
A.
Reduce
water pressurs
B.
Correct
restriction
or
use lareer
drain
hose.
Refer
to
Section
4
on;Cooling
Requirements."
Shorten
the
distance
to
the
final
drain
Possible
Cqase:
10.
Smoke
or Vapor
A. Internal problems
with
power
absorption
module
Possible
Remedy:
A.
Stop test immediately
and
determine
cause.
Refer
to
Seetion
13
on
"Inspection
&
Maintenance."
Continued
running
in
this
mode
denotes
a
problem.
To
continue
with
this
problem
can
result
in
severe
damage
to the
equipment
as
well as
personal
injury.
If
unqble
to
determine
cause,
consult
factory
service
immediately.
Possihle
Cuwse:
11.
Unstable
torque
andlor power
readings
A.
Internal
problems
with
power
absorption
module.
Fossible
Remedy:
n
A.
Stop test
immediately
anddetermine
cause.
Refer to
Section
9 on
.
"Inspection
& Maintenance."
Continue
running
in this
mode
denotes
a
problem.
To continue
with
this
problem
can result
in
severe
damage
to the
equipment
as
well
as
personal
injury.
If
unable to
determine
cause,
consult
factory
service
immediatelv.
O
NO MARKS
GRADE
2
200
Neb 200
Neb
230
3
MARKS
GRADE
5
375
:
Neb 400
Neb
460
5 MARKS
GRADE
8
Neb 600
Neb 690
t9