30
MAINTENANCE SECTION
Always turn off the power supply. Bleed off hydraulic uid from the hose
connections on the cylinder assembly and disconnect the hoses before
attempting to repair or perform maintenance on this tool. Always wear
eye protection when operating or performing maintenance on this tool.
DISASSEMBLY
GENERAL INSTRUCTIONS
1. Do not disassemble the tool any further than necessary to replace or repair damaged parts.
2. Use extra care not to score, nick or damage surfaces that will contain hydraulic oil under pressure.
3. Whenever grasping a tool in a vise, always use leather–covered or copper–covered vise jaws to
protect the surface of the part and help prevent distortion. This is particularly true of threaded
members and housings.
4. Do not remove any part that is press t in or on an assembly unless the removal of that part is
necessary for repairs or replacement.
5. Do not disassemble the hydraulic cylinder assembly unless you have a complete set of seals and
O–rings for replacement.
6. Use only British Standard fractional size tools when disassembling these tools.
DISASSEMBLY OF THE TOOL
1.
Push the link pin (9) out of the cylinder housing (1) and link side plates (1 & 2).
2.
Lift the housing from between the side plates and separate the two units.
DISASSEMBLY OF THE TXU-2, TXU-4, AND TXU-8 CYLINDER ASSEMBLIES
1.
Clamp the housing (1) in copper-covered or leather-covered vise jaws with the uniswivel upward.
Using a hex wrench, unscrew the four uniswivel post screws (20) that clamp the uniswivel to the
housing. Collect the O-rings (three for the TXU-2, ve for the TXU-4 and TXU-8).
2.
Remove the housing from the vise and turn it over a container to catch any oil remaining inside the
cylinder.
3.
P
lace the tool with the slider pin hole over a clearance opening and use a small drift to tap the slider
pin (12) out of the sliders (6) and piston (2).
Re-clamp the housing in the vise with the end cover
(10) end upward.
4.
Use a hex wrench to unscrew and remove the end cover screw (11). Remove the end cover (10).
5.
Tap the end cap (7) inward approximately 1/2” and remove the two retaining rings (8) by working
them out of the groove in the cylinder. Note: Covering the oil ports with a cloth will contain any oil
that may expel from the housing.
6.
Install the seal insertion tool (40) into the end of the housing (1). Note: Lubricating the inside of the
insertion tool will ease the removal of the piston (2) and end cap (7).
7.
Invert the tool above the vice, spreading the vice open enough to catch the end plug and piston.
Note: Placing a cloth draped between the jaws of the vice will contain the exiting parts.
8.
Tap the piston with a brass tap lightly until both the piston and end cap slip through the housing and
into the catch cloth.
9.
Use the gland removal tool (41) to unscrew and remove the cylinder gland (17) from the housing.
Note: TXU-2 does not have a cylinder gland.
The purpose of the seal insertion tool in the following step is to prevent
the end plug seal from expanding into the retaining ring groove. If the
tool is not used, place two thin pieces of at stock at the midpoint of the
opening against opposite walls to control the seal expansion.
WARNING
CAUTION
To Next Page
Loading...
