National Crane Published 10-30-2014 Control # 040-09 5-41
1400H OPERATOR AND SERVICE MANUAL SERVICE
JIB JACK SERVICE & MAINTENANCE
Important: Use only a good grade hydraulic jack oil,
transmission oil, or turbine oil. Avoid mixing types of oil.
Do not use brake fluid, alcohol, glycerin, detergent
motor oil, or dirty oil. Improper fluid can cause serious
internal damage to the jack rendering it inoperative.
Adding Oil
1. With saddle fully lowered and piston depressed, set jack
in its upright level position and remove oil filler plug.
2. Fill until oil is level with filler plug hole.
Changing Oil
1. For best performance and longest life, replace the
complete oil supply at least once a year.
2. To drain the oil, remove the filler plug.
3. Lay the jack on its side and allow the oil to run out into
suitable drain pin. The oil will run slowly because air
must enter as oil drains out.
4. Be careful to prevent dirt or foreign matter from entering
the system.
5. Replace with proper oil as described above.
Lubrication
Add proper lubrication oil to all pivoting sections every
three months.
Rust Prevention
Check ram every three months for any sign of rust or
corrosion. Clean as needed and wipe with an oil saturated
cloth.
Note: When not in use, always leave the saddle and
ram all the way down.
To Next Page
Loading...
