Multiswivel Manifold Disassembly; Multiswivel Manifold Assembly - SPX TWLC Series Operating Manual

Repair Procedures continued

Multiswivel Manifold Disassembly

The multiswivel manifold should only be removed
for seal replacement or during full servicing.
Removal and stripdown of the multiswivel
manifold is done as follows:
1. Disconnect the hydraulic torque wrench from
the power supply.
2. See Figure 8. Remove the multiswivel yoke
screw.
3. See Figure 9. Disengage the multiswivel yoke
by rotating the advance yoke away from the
retract yoke, disengaging the keys. Pull each
yoke away from the banjo.
4. Unscrew and remove the four off screws
that attach the post to the wrench body. The
TWL2 body has an integral top plate that will
not have the four screws to remove. Refer to
Parts List.
5. Lift out the multiswivel post. Remove and
discard the port seals and post seals.
Clean and inspect all components including the
hydraulic couplings. If the hydraulic couplings
are damaged, remove and replace with new
(multiswivel yoke threads are 1/4-in. NPT).
Inspect the components for scoring, pitting, and
damage, which could impair the sealing ability,
and replace as necessary.

Multiswivel Manifold Assembly

noTe: all seals should be new and
lubricated with clean hydraulic oil or seal
assembly paste before installation.
1. Install the new o-ring seals into the base of the
multiswivel post.
2. Attach the multiswivel post to the hydraulic torque wrench body using the four off screws. Apply a
drop of low-strength, thread-locking adhesive, and torque the screws to 3.5 Nm (31 in-lb).
3. Assemble three new o-ring seals to the multiswivel post.
4. Assemble four new o-ring seals to the multiswivel banjo.
5. Carefully push the banjo onto the post, ensuring the seals do not get damaged.
6. Attach the banjo circlip to the post.
7. Assemble the advance and retract yokes to the banjo.
IMPORTANT: Be sure to install the advance and retract yokes onto the banjo correctly. The
banjo is hard stamped with A (advance) and R (retract) to indicate the correct position of the as-
sociated yoke. Reversal of the yokes will cause the torque wrench to malfunction and can lead
to damage.
© SPX
Figure 8. Yoke Screw
Figure 9. Rotated Yoke
23
Form No. 1000529
Rev. 1 December 6, 2011