SIDE SHIMMING OF BOOM SECTIONS 800D
7-6
Published 5-27-2018 Control # 039-06
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.
TROUBLESHOOTING
(OPTIONAL) OIL COOLER SERVICE &
MAINTENANCE
The heat exchanger must be kept clean to allow for efficient
operation of the cooler system. Frequent washing of the heat
exchanger core will eliminate oil film, road dirt and other
foreign object buildup on the heat exchanger fins which
reduces cooling efficiency.
Frequent inspection and tightening of hose clamp line
connections will eliminate the possibility of end connection
failure due to back pressure from cold startup. If cooler
system fails to provide adequate performance, reduced air or
oil flow through the heat exchanger is the probable cause.
The cooling fan should be inspected for proper operation
(see Specifications). Any obstructions in airflow should be
corrected (cooler too close to other truck components,
foreign matter in heat exchanger fins, etc.) All hydraulic lines
should be periodically checked for obstructions, hose kinks
or other flow restrictions.
Symptom Possible Cause(s) Corrective Action
Will not lift load 1. No oil in system
2. Release valve not closed
1. Add oil to reservoir tank through oil filler
hole
2. Turn handle clockwise tightly
Will lift load only part way Oil level low Add oil to reservoir tank through oil filler hole
Will lift load but will not hold 1. The following valve or valves leaking:
a. Suction valve
b. Delivery valve
c. Release valve
4. Packings worn out or defective
1. Replace jack
2. Replace jack
Jack will not lower Release valve stuck, probably dirt or
foreign matter
Transfer load then replace dirty oil, flush oil
reservoir with kerosene
Poor lifting 1. Dirty oil
2. Air in hydraulic system
1. Change hydraulic oil
2. Purge air from system
Poor pumping action Oil seal for pump unit worn out or
defective
Replace jack
Fo
r
Reference
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