Doosan D50S-5 Operation & Maintenance Manual page 187

1. 1. Remove the hydraulic tank drain plug located on Remove the hydraulic tank drain plug located on
the bottom of the frame. Allow the oil to drain in the bottom of the frame. Allow the oil to drain in
a suitable container. Clean and install the plug. a suitable container. Clean and install the plug.
2. 2. Loosen the bolts of the hydraulic tank cover. Loosen the bolts of the hydraulic tank cover.
3. 3. Remove the strainer from the tank. Remove the strainer from the tank.
4. 4. Install the new strainer by hand. Install the new strainer by hand.
5. 5. Install the hydraulic tank cover and fasten the Install the hydraulic tank cover and fasten the
bolts. bolts.
19. Start the engine and operate the hydraulic 19. Start the engine and operate the hydraulic
controls, and the steering system, through a few controls, and the steering system, through a few
cycles to fill the lines. Look for oil leaks. cycles to fill the lines. Look for oil leaks.
20. 20. Stop the engine and check the oil level. With all Stop the engine and check the oil level. With all
cylinders retracted, maintain the oil level to the cylinders retracted, maintain the oil level to the
FULL mark on the dip stick/filter cap assembly. FULL mark on the dip stick/filter cap assembly.
Transmission Oil & Filter (3 Speed , Transmission Oil & Filter (3 Speed ,
ZF 3WG116) – Change ZF 3WG116) – Change
Only for D50/60/70/80/90S-5 (3 Only for D50/60/70/80/90S-5 (3 Speed, ZF
3WG116) 3WG116)
See topic, "Transmission Oil & Oil See topic, "Transmission Oil & Oil Filte
"First 50-100 Service Hours or a W "First 50-100 Service Hours or a W eek".
Transmission Oil (2 Speed Only) – Transmission Oil (2 Speed Only) –
Change Change
9. 9. Install the breather.
10. Remove the floor plate. 10.
11. Remove bolts and filter housing. 11.
12. Remove and discard filter element from filter 12.
13. Clean 13.
14. Clean the housing base. 14.
15. 15. Insert a new filter element into the filter housin
16. 16. Inspect the filter housing seal. Replace if
17. Apply a small amount of clean oil to the filter 17.
18. Install the filter housing with filter to the housing 18.
186 186
Lift Chains - Test, Check, Adjust Lift Chains - Test, Check, Adjust
Lift Chain Wear Test Lift Chain Wear Test
Inspect the part of the chain that is normally Inspect the part of the chain that is normally
operated over the cross head roller. When the chain operated over the cross head roller. When the chain
bends over the roller, the movement of the parts bends over the roller, the movement of the parts
against each other causes wear. against each other causes wear.
Inspect to be sure that chain link pins Do not extend Inspect to be sure that chain link pins Do not extend
outside of the link hole. If any single link pin is outside of the link hole. If any single link pin is
extended beyond its connecting corresponding link, extended beyond its connecting corresponding link,
it should be suspected of being broken inside of its it should be suspected of being broken inside of its
link hole. Lift chains are required to check for weare link hole. Lift chains are required to check for weare
Speed, ZF
about every 1,000 service hours or 6 mon about every 1,000 service hours or 6 months.
Chain wear test is a measurement of wear of the Chain wear test is a measurement of wear of the
chain links and pins. Take the following steps to chain links and pins. Take the following steps to
Filter - r - Change" in Change" in
check chain wear. check chain wear.
eek".
1. 1. Lift the mast and carriage enough for getting
Install the breather.
Remove the floor plate.
Remove bolts and filter housing.
Remove and discard filter element from filter
housing. housing.
Clean the the filter filter housing housing
nonflammable solvent. nonflammable solvent.
Clean the housing base.
Insert a new filter element into the filter housing. g.
Inspect the filter housing seal. Replace if
necessary. necessary.
Apply a small amount of clean oil to the filter
element seal and housing seal. element seal and housing seal.
Install the filter housing with filter to the housing
base. Install bolts and tighten 20 to 30 N base. Install bolts and tighten 20 to 30 N
to 20 lb to 20 lb ft). ft).
• •
Lift the mast and carriage enough for getting
tension on lift chains. tension on lift chains.
with with a a clean, clean,
m (15 m (15
• •
Maintenance Section Maintenance Section
ths.