Place a jack between bed and ram at each housing.
Protect the bed and ram nose with wood or soft
metal. Do not place jack under ram die clamps.
Apply enough pressure to support weight of ram,
ram slides and pistons.
Remove plastic laminate shipping strips from under
ram slide clamps. Pry ram slides out enough to
remove the plastic laminate from between the ram
slides and guides.
IMPORTANT: These plastic laminate shipping
strips must be removed before running the
machine.
Use cleaning solvent to flush protective grease from
between slides and guides. Allow surfaces to dry
and lubricate with oil. Push ram slides back against
guides. Securely tighten the ram slide clamp bolts.
Tighten both jacks to seat ram saddles and ram
slide trunnions. Remove dowel pins from dry ice.
Drive in dowel pins. Make sure pins are driven in
hole with stamped word "UP" to the top. Tighten the
ram bolts securely. Use a six foot length of pipe on
the wrench.
Install all hydraulic hoses between the cylinder
manifolds and the hydraulic tanks. Also install
Auto Crown hydraulic hoses if this option is
supplied.
Open the bleed valves on the lower cylinder mani-
folds. Slowly lower the jacks at each housing to
lower the ram. Never allow the ram to get more than
one inch out-of-level. Lower the ram until the cylin-
ders bottom-out, then remove jacks.
CLEANING
Thoroughly clean protective grease from all other
parts of the machine. Remove the grease with a rag
saturated in cleaning solvent (mineral spirits) and
wipe with clean rags. A stiff brush will get into the
corners. Do not use an air hose. The pressure could
drive grit and dirt into bearing surfaces. After
cleaning the machine thoroughly, wipe dry. Make
sure no dirt or grit is left, then lightly oil the bed
and ram finished surfaces. Periodic cleaning of the
machine after installation is recommended.
LEVELING
CINCINNATI Hydraulic Press Brakes are leveled by
placing flat steel shims of proper thickness under
the housing feet as required. Use a precision level
graduated in .0005" per foot – not a carpenter's or
machinist's level. Always wipe the level and bed
surface clean before placing the level. Give the bub-
ble of precision level a full half minute to come to
absolute rest.
The 400FM machines can be raised or lowered by
using leveling screws in the housing feet. Use at
least a two foot length of pipe on the wrench. On
larger machines jack lugs on sides and back of the
housings are used for this purpose. The foundation
bolt nuts must be loosened, not removed, before
jacking the press brake. Before checking the level of
machine the foundation bolt nuts must be secure-
ly tightened. See Figure 2-3.
Start leveling by checking the setting of machine
lengthwise. Place level in the center of bed parallel
to edges of bed. Level the machine lengthwise by
placing the required metal shim under the low
housing feet, both front and back. Let the press
brake down and recheck level. Repeat until
machine is level lengthwise.
Level the press brake front-to-back with level cross-
wise on bed as shown in Figure 2-5. Check first
with the level at right end of machine and then at
left end. Add or remove shims under the front or
back housing feet as required. Level readings on
both ends of bed must be alike within .001".
Recheck lengthwise level and repeat above proce-
dure until machine is level in all directions.
Check the slide clearance with feeler gages as
shown in Figure 2-7. This is to make sure there is
no twist in machine due to being out-of-line. If all
the clearance (.006" to .008") is at TOP FRONT and
BOTTOM REAR on one housing slide and the
reverse condition, all clearance at TOP REAR and
BOTTOM FRONT on the other housing slide, there
is a twist in the ram.
CAUTION
Do not touch pins with bare hands. Use gloves
or other protective devices to handle pins.
2-6
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