Specifications

GOLDCUP CONTROLS SERIES 400
ASSEMBLY
1. Install Lee Pluget in body using installation tool and gage.
2. Install orifices (10) and (11) in body. Torque to 25 lbs-in. (2.8 Nm). Make sure that
the orifice (11) in the deeper bore extends past the wall of the valve bore and will not
interfere with spool (33) or spool (22) action.
3. Apply pipe sealant and install plugs (14) in body. Torque to 100 lbs-in. (11.3 Nm)
4. Press rollpins (43) into body, being careful not to mar the surface in the area of the
shoe path.
5. Install O-ring (7) in groove of shear seal (8). Install shear seal with O-ring in the
large hole on the servo link, on the servo shaft side. Be certain that the shear seal is
sitting with the flange flush against the servo link surface.
6. Install needle bearing (9) over servo shaft and seat against the servo link. Install
thrust washer (54) over needle bearing.
7. Install O-ring (5) in the second groove from the end of the shaft, using installation
tool T-1.
8. Install the servo shaft assembly in the control cover (12), engaging the pin in the
slot.
9. Install retaining ring (4) into the groove of the servo shaft extending through the
control cover.
10. Press pin (15) into screw (16) to 0.38” (9.65 mm) extended length.
11. Install screw (16) into body. Pin (15) should extend into spool bore approximately
.090” (2.29 mm). The eccentric pin must be indexed so that it is offset towards the out-
side surface of the cover plate. The drilled hole for the spring pin (17) should be
approximately centered in the slotted opening in the cover plate. Install spring pin (17)
into trimmer assembly. Leave approximately one-half length of pin extending from
screw. This will allow approximately plus or minus 45° rotation of the trimmer assem-
bly. Install nut (18) with O-ring (19), locking trimmer in position. Install O-ring (52) and
plug (53).
12. Assemble seat insert (20) and threaded insert (21) into spools (22), using loctite
#271 per instructions on bottle. Inserts must be assembled into the spool end nearest
the 1/8” (3.18 mm) cross drilled holes.
13. When assembled spools (22) are installed in cover plate (12), they are held
against the eccentric pin of the trimmer assembly by springs (27). In this position,
adjusting screw (24) must have the ball (23) unseated by .012” (0.305 mm) to cause
brake release at 5% of stroke. A special fixture permits adjustment to this setting per
AP-01925. In the absence of this fixture, drop ball (23) into the spool containing the
seat insert. Hold the ball against the seat by inserting piston (26) into the bore. Hold
the two spools (22) with inserts together and set the adjusting screw (24) to where it
just contacts the ball. Turn the adjusting screw in 8 3/8 turns past this point and lock
with setscrew (25), being careful not to disturb the setting.
14. Retain ball (23) in spool bore by installing spring pin (17). Make sure that the
ends of the spring pin do not extend beyond the O.D. of the spool.
15. Install pistons (26) into the spools (22). Install spool assemblies in the bore con-
taining the trimmer adjustment. The spool containing the ball is to be on the side with
the orifice (11).
16. Install springs (27) over pistons. Install plugs (28) and O-rings (29).
17. Install spools (33) and (36) into the other cross-bore in the cover (12). Spool (33)
should be on the side with the orifice (11), and with the slotted side to the outside.
18. Install spring (34) and plug (35) with O-ring (29) on this side.
19. Install O-rings (40) on fitting (41). Install piston (42) in bore of body (39). Install
fitting (41) on body (39) and install assembly in cover (12).
20. Install O-rings (44) and (45) on vent post (46). Install vent post in cover. Install
spring (47) and shoe (48) on vent post.
21. Place two spring washers (49), nested with the bent sections matching each other,
into the large hole in the servo link.
22. Place washer (55) against the spring washers.
23. Install O-ring (7) into groove in the remaining shear seal (50). Note: This shear
seal does not contain the two .094” (2.4 mm) radius scallops in the face. Place on top
of washer (55). Position shear seal to match the lip on the servo link.
24. For 4C controls, install adjusting screws (2), nuts (3) O-rings (30), plugs (34) and
O-rings (33) into plugs (29).
25. Install control over dowels, with gasket, (51), washers (3) and screws (2). Torque
to 30 lbs-ft. (40.8 Nm).
26. Install bypass tubing lines.
23
Note: The shear seal will fit in one position only. Otherwise one side will be held up
by the lip of the servo link. Shear seal (8) must be installed to face against the cover
plate (12). This shear seal differs from shear seal (50) in that the face surface is ma-
chined with two .094” (2.4 mm) radius scallops.