TorcUP TU-2 - Page 28

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DISASSEMBLY OF THE TU-2, TU-3, TU-7, AND TU-11 CYLINDER ASSEMBLIES
1. Clamp the housing (1) in copper–covered or leather–covered vise jaws with the inlet end upward
and using a 1/4” hex wrench, unscrew and remove the two swivels (39) with their attached couplers
(40).
2. Remove the housing assembly from the vise jaws and turn over a container to catch any oil
remaining inside the cylinder.
3. Use a hex wrench to unscrew and remove the shroud mounting screws (25). Remove the shroud
(24). Note: For TU-3 models, the drive side shroud screw holds the ratchet spring (37) in place,
which will come out with the removal of the shroud.
4. For TU-7 and TU-11 models, use a hex wrench to unscrew and remove the side housing plugs
(33) from each side of the housing.
5. If the piston assembly is not fully retracted, use a brass drift or brass hammer to tap the assembly
inward until the roll pin (20) aligns with the cross holes in the housing. Note: Covering the inlets with
a cloth will contain any oil that may expel from the housing.
6. Use a small drift to tap the roll pin (22) out of the piston rod assembly (20) and drive plate (13).
7. Insert a hex wrench through the larger opening in the square drive and loosen the square drive
locking pin (15) until the square drive slides out of the tool. Note: Use caution when removing
the square drive.Thesquaredrivepin(16)looselytsinthesquaredriveandcanfalloutwhen
the drive is removed.
8. Remove the drive plate (13), assembled with the ratchet (11), drive segment (12) and segment
springs (26).
9. Usingngerpressure,pushthesleeves(18)inwardtoremovethemfromthehousing.
10. Being careful not to let the springs eject from the assembly, slide the ratchet (11), drive segment
(12) and segment springs (26) out of the drive plate (13).
11. Locate the stake point on the threads of the cylinder gland (23) and housing. Using a 1/16” drill
bit centered on the stake point, drill approximately 3/32” deep in one continuous motion to remove
the thread and interference at that point.
12. Engage the pins of the cylinder gland wrench (50) with the holes in the cylinder gland (23) and
using a socket on the hex of the wrench unscrew and remove the cylinder gland. If the gland does
not rotate freely after initial breakout, additional drilling, in small increments, may be required to
remove the obstruction.
13. Clamp the housing in the vise with the end plug upward and a catch cloth draped between the jaws.
14. Insertaatfacedriftintotheholeinthecenteroftheendplug(19).Taptheendplugandpiston
lightly until both the piston and end plug slip through the housing and into the catch cloth.
15. While using caution as to avoid scratching the cylinder, remove the cylinder ring (35) by using a thin
blade screwdriver to work it out of the groove within the housing.
In the following step, the shroud will spring to a straightened position
when the screws at one end are removed. Hold the shroud in position
until the screws are removed and control the ex of the loose end.
The cylinder gland is staked into the housing to prevent it from
loosening due to vibration or turbulence in the hydraulic oil ow. The
stake point must be drilled out before attempting to remove the cylinder
gland.
MAINTENANCE SECTION
CAUTION
NOTICE