Doosan D50S-5 Operation & Maintenance Manual page 136

Establish a daily and 12 month inspection routine by Establish a daily and 12 month inspection routine by
keeping a record for the forks on each lift truck. keeping a record for the forks on each lift truck.
Initial information should include the machine serial Initial information should include the machine serial
number on each the forks are used, the fork number on each the forks are used, the fork
manufacturer, type, original section size, original manufacturer, type, original section size, original
length length and and
characteristics specified in the fork design. characteristics specified in the fork design.
Record the date and results of each inspection, Record the date and results of each inspection,
making sure the following information is included. making sure the following information is included.
Actual wear conditions, such as percent of Actual wear conditions, such as percent of
 
original blade thickness remaining. original blade thickness rem
Any damage, failure or deformation which might Any damage, failure or deformation which might
 
impair the use of the truck. impair the use of the truck.
Note any repairs or maintenance. Note any repairs or maintenance.
 
An ongoing record of this information will help in An ongoing record of this information will help in
identifying proper inspection intervals for each identifying proper inspection intervals for each
operation, in identifying and solving problem areas operation, in identifying and solving problem areas
and in anticipating time for replacement of the forks. and in anticipating time for replacem
Maintenance Section Maintenance Section
12 Months Inspection 12 Months Ins
Forks should be inspected, at a minimum, every 12 Forks should be inspected, at a minimum, every 12
months. If the truck is being used in a multi-shift or months. If the truck is being used in a multi-shift or
heavy duty operation, they should be checked every heavy duty operation, they should be checked every
six months. See "Forks" in the "2000 Service Hours six months. See "Forks" in the "2000 Service Hours
or Yearly" in "Maintenance Intervals." or Yearly" in "Maintenance Intervals."
Maintenance and Repair Maintenance and Repair
1. 1. Repair forks only in accordance with the Repair forks only in accordance with the
manufacturer's recommendations. manufacturer's recommendations.
capacity. capacity. Also Also list list any any
aining.
ent of the forks.
pection
4," in the "2000 Service Hours or Yearly" in 4," in the "2000 Service Hours or Yearly" in
"Maintenance Intervals" "Maintenance Intervals"
3. 3. Make sure positioning lock is in place and Make sure positioning lock is in place and
working Lock forks in position before using truck. working Lock forks in position before using
See "Forks, Step 7", in the "2000 Service Hours See "Forks, Step 7", in the "2000 Service Hours
or Yearly" in "Maintenance Intervals". or Yearly" in "Maintenance Intervals".
Daily Inspection Daily Inspection
special special
1. 1. Visually inspect forks for cracks, especially in Visually inspect forks for cracks, especially in
the heel section, around the mounting brackets, the heel section, around the mounting brackets,
and all weld areas. Inspect for broken or jagged and all weld areas. Inspect for broken or jagged
fork tips, bent or twisted blades and shanks. fork tips, bent or twisted blades and shanks.
2. 2. Make sure positioning lock is in place and Make sure positioning lock is in place and
working. Lock the forks in position before using working. Lock the forks in position before using
the truck. See "2000 Service Hours or Yearly" in the truck. See "2000 Service Hours or Yearly" in
"Maintenance Intervals". "Maintenance Intervals".
3. 3. Remove all defective forks from service. Remove all defective forks from service.
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With the fork restrained in the same manner as With the fork restrained in the same manner as
its mounting on the lift truck, apply the test load its mounting on the lift truck, apply the test load
twice, gradually and without shock. Maintain the twice, gradually and without shock. Maintain the
test for 30 seconds each time. test for 30 seconds each time.
Check the fork arm before and after the second Check the fork arm before and after the second
application of the test load. It shall not show any application of the test load. It shall not show any
permanent deformation. permanent deformation.
Consult Consult
information as may be applicable to the specific information as may be applicable to the specific
fork involved. fork involved.
Testing is not required for repairs to the Testing is not required for repairs to the
positioning lock or the markings. positioning lock or the markings.
the the fork fork manufacturer manufacturer
truck.
for for further further