Doosan D50S-5 Operation & Maintenance Manual page 188

Only for D50/60/70S-5 (2 Speed), Only for D50/60/70S-5 (2 Speed),
G50/60/70S-5 G50/60/70S-5
See topic, "Transmission Oil & Oil Filter - Change" in See topic, "Transmission Oil & Oil Filter - Change
"First 50-100 Service Hours or a Week". "First 50-100 Service Hours or a Week".
Maintenance Section Maintenance Section
Check for Check for Equ
Typical example Typical example
Lift the carriage and the mast high enough for Lift the carriage and the mast high enough for
getting tension on lift chains. Check the chains, and getting tension on lift chains. Check the chains, and
make sure the tension is the same. Lift chains are make sure the tension is the same. Lift chains are
required to check for equal tension about every required to check for equal tension about every
1,000 service hours or 6 months. 1,000 service hours or 6 months.
Equal Tension al Tension
" in
Typical example Typical example
2. 2. Measure precisely ten links of chain distance at Measure precisely ten links of chain distance at
the center of pins in millimeter. the center of pins in millimeter.
3. 3. Calculate chain wear rate*.
Calculate chain wear rate*.
4. 4. If the chain wear rate is 2% or more, replace the If the chain wear rate is 2% or more, replace the
lift chain. lift chain.
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Carriage Chain Adjustment - STD Mast Carriage Chain Adjustment - STD Mast
Typical example for carriage chain of STD mast Typical example for carriage chain of STD mast
Make sure that carriage height is correct. If correct, Make sure that carriage height is correct. If correct,
adjust chain for equal tension. If not, adjust chain for adjust chain for equal tension. If not, adjust chain for
correct carriage height by adjusting anchor nuts(1). correct carriage height by adjusting anchor nuts(1).
NOTE: NOTE: See the previous section, "Carriage Roller See the previous section, "Carriage Roller
Extrusion" in "When Required" for proper Extrusion" in "When Required" for proper