Condec MPV-10K - Manual (Page 7)

Maintenance 5
3. ORION-2C, ORION-2D: Add mylar washers (41 or 42) to each side of shaft (14). Apply a small amount
of Krytox grease to the shaft threads and install the shaft (14) into the end cap (13).
NOTE: Part number and quantity will vary. Washers are used to adjust vertical play in shaft (14). Try one washer (41) on
each side to start.
Install the end bushing (12) and tighten until snug using the isolation valve needle housing socket (PN
68509) and socket wrench.
ORION-3A: Hold shaft (14) vertically with end that goes through end bushing (12) toward ceiling. Place
light coating of grease on threads of shaft. Place thick coating of grease on top of shaft bearing surface.
Allowing grease to hold ball bearings in place. Slide end bushing (12) over top of shaft and down to
contact top of ball bearings. Rotate shaft assembly 180°, placing end bushing towards the floor. Be
careful not to displace ball bearings. Place thick coating of grease on shaft and bearing surface. Place
sixteen chrome ball bearings (41) on greased surface, allowing grease to hold them in place. Install
shaft with bearings into end cap. Install the end bushing and tighten until snug using the isolation valve
needle housing socket (PN 68508) and socket wrench.
4. ORION-2C, ORION-2D: Feel vertical motion of shaft (14). If motion exists, add thicker washer (42) at
step 3, otherwise continue to step 5.
ORION-3A: Tighten so that shaft rotates, but should be firm. Verify no up and down movement. If there
is up and down movement, retighten end bushing.
5. Install the locknut (20) into end cap (13) and using the isolation valve needle housing socket (PN 68509)
and torque wrench. Torque to approximately 325 in. lbs. (may not get to torque on all sub-assemblies).
6. Install the O-ring (32) in the piston groove and install the piston (15) into the VERNIER cavity. Ensure
that the piston key way is facing the hole into which the self-sealing screw (36) is assembled.
7. Install the self-sealing screw (36) and tighten until snug.
8. Install the O-ring (29) on the end cap/shaft assembly, install into manifold and tighten until snug.
ORION-3A: Also install backup washer (38) on the end cap/shaft assembly.
2.6 ORION Manifold - Valve Seat Replacement
(ORION-2C: Refer to the List of Parts - Table 2-1 on page 10, and Exploded View - Figure 2-6 on page 12)
(ORION-2D: Refer to the List of Parts - Table 2-2 on page 13, and Exploded View - Figure 2-8 on page 15)
(ORION-3A: Refer to the List of Parts - Table 2-3 on page 16, and Exploded View - Figure 2-10 on page 18)
Tools required: A/R solvent (de-natured alcohol)
socket wrench
3/4" socket
female socket (PN 65581)
needle housing socket (PN 65580)
isolation valve needle housing socket (PN 68509)
hex wrench (.061")
hex wrench (.050")
torque wrench
needle-nose pliers
tube Fluorinated Krytox grease (PN 55593)
No. 43 drill
1. Install a new seat (7) by placing it into the seat well with the needle-nose pliers. Ensure that the seat is
centered within the cavity and gently tap it with a blunt end of a drill bit to install.
2. Install the valve needle seat (9) with the smaller diameter end facing outward.
3. Install new O-rings (28, 27) inside and outside of the valve stem seat (8). Coat all O-rings and back-up
rings (30, 31) with fluorinated Krytox grease before installation. Make sure that the rings are installed in
the proper order.
4. Install the valve stem seat (8) by grasping the small diameter end with the needle-nose pliers and
positioning in the valve cavity, then properly seat by gently pushing with the blunt end of a drill bit.
5. For the two outer valves, disassemble the valve needle (11) from its housing (10) and check for any burrs
or dirt on the threads which might interfere with smooth operation.