Doosan D50S-5 Operation & Maintenance Manual page 190

carriage height. carriage height.
1. 1. Fully lower the carriage and tilt mast forward or Fully lower the carriage and tilt mast forward or
lift the carriage and put blocks under the lift the carriage and put blocks under the
carriage to release the tension from the lift carriage to release the tension from the lift
chains. chains.
2. 2. Remove bolt(3), washer(4) and stopper(5) and Remove bolt(3), washer(4) and stopper(5) and
adjust nut(2) to get proper distance from bottom adjust nut(2) to get proper distance from bottom
of inner upright to the bottom of carriage of inner upright to the bottom of carriage
bearing. bearing.
3. 3. Make adjustment anchor nut(2) for equal chain Make adjustment anchor nut(2) for equal chain
tension. tension.
4. 4. Set the mast vertical and raise the carriage and Set the mast vertical and raise the carriage and
check equal chain tension. If not equal, repeat check equal chain tension. If not equal, repeat
the same procedure as step 1 through step 3. the same procedure as step 1 through step 3.
5. 5. Put LOCTITE No. 242 tread lock on the threads Put LOCTITE No. 242 tread lock on the threads
of the anchor nuts(2) after the adjustment is of the anchor nuts(2) after the adjustment is
completed. completed.
Maintenance Section Maintenance Section
Every 1500 Service Hours or 9 Months Every 1500 Service Hours or 9 Months
You must read and understand the warnings and instructions contained in the Safety section of this manual, You must read and understand the warnings and instructions contained in the Safety section of this manual,
before performing any operation or maintenance procedures. before performing any operation or maintenance procedures.
Drive Axle Oil (Shoe Brake Only) - Drive Axle Oil (Shoe Brake Only) -
Change Change
See topic, "Drive Axle Oil - Change" in "First 50-100 See topic, "Drive Axle Oil - Change" in "First 50-100
Service Hours or a Week. Service Hours or a Week.
Inspect Ignition System (LP Inspect Ignition System (LP
Engine Only) Engine Only)
1. 1. Disconnect Battery Cables. Disconnect Battery Cables.
2. 2. Remove and inspect the spark plugs. Replace Remove and inspect the spark plugs. Replace
as required. as required.
Extrusion" in "When Required" for proper Extrusion" in "When Required" for proper
inner mast height. inner mast height.
1. 1. Lift the inner mast and put blocks under the
Lift the inner mast and put blocks under the
inner mast to release the tension from the lift inner mast to release the tension from the lift
chains. chains.
2. 2. Adjust nut(6) to make inner mast bottom flush Adjust nut(6) to make inner mast bottom flush
with outer mast bottom. with outer mast bottom.
3. 3. Make adjustment anchor nut(6) for equal chain Make adjustment anchor nut(6) for equal chain
tension. tension.
4. 4. Raise the inner mast and check equal chain Raise the inner mast and check equal chain
tension. If not equal, repeat the same procedure tension. If not equal, repeat the same procedure
above step 1 through step 3. above step 1 through step 3.
5. 5. Put LOCTITE No. 242 tread lock on the threads Put LOCTITE No. 242 tread lock on the threads
of the anchor nuts(6) after the adjustment is of the anchor nuts(6) after the adjustment is
completed. completed.
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Replace Spark Plugs (LP Engine Replace Spark Plugs (LP Engine
Only) Only)
1. 1. Disconnect Battery Cables. Disconnect Battery Cables.
2. 2. Using a gentle twisting motion remove the high Using a gentle twisting motion remove the high
voltage cables fr voltage cables from th om the spa
any damaged cables. any damaged cables.
3. 3. Remove the spark plugs. Remove the spark plugs.
4. 4. Gap the new spark plugs to the proper Gap the new spark plugs to the proper
specifications. specifications.
G643(E) Engine : 0.9mm (0.035 inch) G643(E) Engine : 0.9mm (0.035 inch)
e spark rk plugs. plugs. Replace Replace