TorcUP TU-2 - Page 29

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DISASSEMBLY OF THE TU-5, TU-20, TU-27, AND TU-60 CYLINDER ASSEMBLIES
Note: TU-20 part numbers are bold.
1. Clamp the housing (1) (1) in copper–covered or leather–covered vise jaws with the inlet end
upward. Use a 1/4” hex wrench to unscrew and remove the two swivels (39) (36) with their
attached couplers (40) (37).
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) (25). Remove the
shroud (24) (24).
4. Use a hex wrench to unscrew and remove the side housing plugs (33) (32) 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 (22) 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).
Note: For TU-20 models, retract screws (22) are used in the place of the roll pin. Use a hex
wrench to remove the retract screws from the drive plate.
7. Unscrew the square drive retaining knob (17) (18). Pull out the square drive (14) (17).
8. Remove the drive plate (13) (16), assembled with the ratchet (11) (14), drive segment (12) (15)
and segment springs (26) (26).
9. Usingngerpressure,pushthesleeves(18) (19) inward to remove them from the housing.
Remove the sleeve retainers (34) (33).
10. Being careful not to let the segment springs (26) (26) eject from the assembly, slide the ratchet
(11) (14), drive segment (12) (15), and segment springs (26) (26) out of the drive plate (13) (16).
11. Locate the stake point on the threads of the cylinder gland (23) (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) (50) with the holes in the cylinder gland (23)
(23). Use a socket on the hex of the wrench to 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. For TU-20 models, use a 1” square drive extension and an adjustable wrench to unscrew the
end plug (20) from the spline sleeve (2). Pull the spline sleeve from the housing.
15. Insertaatfacedriftintotheholeinthecenteroftheendplug(19)(20). Tap the end plug and
piston lightly until both the piston and end plug slip through the housing and into the catch cloth.
16. While using caution as to avoid scratching the cylinder, remove the cylinder ring (35) (34) using a
thin blade screwdriver to work it out of the groove within the housing.
MAINTENANCE SECTION
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.
CAUTION