OTC 1833 - Hydraulic Connections; Hydraulic Connection Procedure; Hydraulic System Maintenance

Assembly & Operating Instructions Form No. 102430
Hydraulic Connections
Note: Refer to Parts list No. 100551 for location of item numbers referenced below.
NOTE: If you are assembling a model 1834 press, the pump mounting bracket is not used. The pump for a model
1834pressispositionedontheshopoorfortheconvenienceoftheoperator.
1. Attach the pump mounting bracket to the right-hand upright. (Refer to the pump mounting bracket diagram, sheet 1
of 2, back.)
2. Assemble the hydraulic hose and gauge to the pump using the hose, gauge, adapters, and couplers supplied.
IMPORTANT:Useahigh-grade,non-hardeningpipesealanttosealallhydraulicconnections.Teontapecan
beusedifonlyONElayeroftapeisapplied.Ensuretherstthreadisexposedwithouttape.Carefullyapplythe
tape to prevent the tape from becoming pinched or broken off inside the hydraulic system. Loose pieces of tape
cantravelthroughahydraulicsystem,whichcouldpotentiallyobstructtheowofoilanddamgethesystem.
3. Thread the hydraulic cylinder into cylinder mounting plate (item 11, sheet 1 of 2). IMPORTANT: The threads of the
cylindermustbeushwiththebottomofthemountingplateforfullthreadengagement.
4. Place the cylinder assembly on the lower bolster. IMPORTANT: The pipe plug on the cylinder must face the pump
side of the press frame.
5. By operating the winch mechanism, raise the cylinder assembly to the upper bolster. Block the cylinder assembly if
additional height is needed so the cylinder will reach the upper bolster when the lower bolster is raised.
6. Attach the cylinder mounting plate to the upper bolsters with cap screws (16), hex nuts (8), and beveled washers (9).
NOTE: Place the beveled washers on top of the bottom lip of the upper bolster. The larger dimension of the beveled
washer is positioned to the outside of the bolster to provide a level surface when tightening the hex nuts. Once the
beveled washers are in their correct position, wrench tighten the hex nuts.
7. After the cylinder assembly is secured to the upper bolster, lower the bolster assembly onto the bolster pins.
8. Bleedthehydraulicsystembyslowlyoperatingthepumphandleuntilanair-freestreamofhydraulicoilowsfrom
the hose.
9. Remove the pipe plug on the cylinder and attach the hydraulic hose.
10. Straighten the press and wrench tighten all hex nuts and cap screws.
IMPORTANT:
• Topreventdamagetothenishedsurfaceofthecylinderpistonrodwhennotinuse,retractthecylinder.
• Onlyuseahigh-gradehydraulicoilwhenrellingthepumpreservoir.Neverusebrakeuidorothersubstitute.