IV-41
HYDRAULIC UNITSGEAR PUMP
DISASSEMBLY AND ASSEMBLY
General Cautions
• Carry out disassembly and assembly operations
in a clean place and provide clean containers to
place the disassembled parts in.
• Before disassembly, clean around the ports and
remove the paint from each joint using a wire
brush.
• Clean all disassembled parts in cleaning solvent.
Use a lint free cloth, or air dry the parts.
• Make match marks on each part so that they will
be assembled in the same positions when as-
sembled.
• Replace all seals with new ones each time the
hydraulic units is disassembled.
• Check each part to make sure there is no abnormal
wear or seizing and use sandpaper, etc. to remove
any burrs, sharp edges, etc.
• Do not turn adjusting screws if not required.
• Apply hydraulic oil to sliding surfaces and apply
a thin coating of grease to seals when assembling
them.
Following is an explanation of the gear pump disas-
sembly procedure.
Follow the procedure used to disassemble the gear
pump in reverse order when reassembling it.
1. Remove the cap screws.
Cap Screw: 48.1~51.0 N·m
• Upon assembling, turn the axis of the pump
with your hand to make sure that it rotates
smoothly. If not, retry the assembling from
the beginning.
• When assembling, place the pump horizontal-
ly as shown in the figure on the right and tap
on the housing slightly with a plastic hammer
to move it toward the discharge side before
tightening the cap screws with the prescribed
torque.
2. Remove the flange (1).
3. Remove the seal (2) and the backup ring (3)
from the flange (1).
To Next Page
Loading...
