Lift/Tilt Mast Adjust-
ment Check
Ensure the following before starting procedure:
•
Truck operating on flat surface.
•
Adequate overhead clearance to raise forks to
maximum height.
•
No load on forks.
1.
Raise forks to maximum height.
Does the top sections of mast kick to one side
at maximum height?
YES:
Shim lift cylinders. See
Mast Repair (S/N A270,
A271, A272)
4000SRM1386.
NO:
Mast cylinder is adjusted
OK. Continue with this proce-
dure.
Continue:
2.
Slowly tilt the mast full forward and then full
backward at maximum height and observe
movement of mast.
Does the top sections of mast make noise
during tilting and show excessive movement
of mast sections?
YES:
Shim and adjust mast.
See
Mast Repair (S/N A270,
A271, A272)
4000SRM1386.
NO:
Mast shimming is OK.
Go to next check.
Tilt Function Drift
Check
Ensure the following before starting procedure:
•
Truck operating on flat surface.
•
Hydraulic oil at operating temperature.
WARNING
Ensure load is secured so it will not
move when mast is tilted fully for-
ward.
•
Secured capacity load on forks.
1.
Raise mast approximately 300 mm (12 in.) off
floor.
2.
Install angle meter on mast and position mast
at approximately 90° angle to ground.
3.
Ensure lift truck is
OFF
.
4.
After 5 minutes, measure mast angle and com-
pare to original reading.
Does mast tilt drift more than 2 degrees in 5
minutes?
YES:
Leakage Test to confirm if
cylinder or control valve is
leaking.
NO:
Tilt drift is OK. Go to
next check.
Operational Checkout
Operational Diagnostic Procedures
Check the Service Manual section in Hypass Online for possible updates and check pertinent Grams
9010-05-10
Confidential/Proprietary - Do Not Copy or Duplicate
Содержание A099
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