TorcUP TU-2 - Page 27

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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 REACTION ARM ASSEMBLY (For all models except TU-20)
1. Push the reaction arm retract button (5) toward the reaction arm cover (8) and separate the
reaction arm assembly from the housing (1).
2. While holding the button down, use a hex wrench to unscrew and remove the reaction arm spline
screw (6).
3. Apply some downward pressure to the reaction arm locking pin (4) and unscrew the reaction arm
retract button (5) from the engagement pin.
4. Remove the locking pin (4) by sliding it out of the top of the reaction arm (2).
5. Pull the reaction arm splined sleeve (3) out of the reaction arm.
6. Using a hooked tool through the reaction arm screw opening, pull the reaction arm spring (7) out of
the reaction arm.
7. To remove the reaction arm cover (8), use a hex wrench to unscrew the cover screws (9) and pull
the cover off the reaction arm. Note: For TU-60 models: Remove the cover roll pin (10) prior to
removing the reaction arm cover.
DISASSEMBLY OF THE TU-20 REACTION ARM ASSEMBLY
1. Use a small drift to tap the gate lever pin (11) out of the reaction arm (3). Remove the gate lever
spacers (7).
2. Useaatheadscrewdrivertounscrewthegatebolt(8)fromthereactionarm,whilebeingcarefulto
contain the gate (4) and gate spring (12).
3. Place the gate lever link (5) over a clearance opening and use a small drift to tap the gate link pins
(10) out of the gate lever (6) and the gate (4).
4. Use a drift to tap the cover roll pin (13) out of the reaction arm (3). Pull the cover off the reaction
arm.
WARNING