Denison Hydraulics Goldcup 6, Инструкция по установке и капитальному ремонту, Страница: 12 / 24

SECTION V – ASSEMBLY PROCEDURES
ROCKER CAM ASSEMBLY
Position the rocker cam (24) on the cradle (20). Note the marks made previously on the
See Figure 3 cradle and cam to indicate top. (See marks in Figure 3.) Marks will be used for assembly
reference.
VANE SEAL CARTRIDGES 1. Install O-ring (23c) around spacer (23d) and insert in the seal vane (23b).
2. Install check valve (23e) inside of spacer (23d) and assemble between the two backup
plates (23a) with the notched V’s exposed.
3. Install assembled cartridge in slot in cam as indicated in Figure 3. Repeat steps 1, 2,
and 3 on other side of cam.
4. Install the four hold-down vanes (22) and springs (21) in the slots on each side of the
control vanes (23).
CONTROL CHAMBER 1. Position both control chambers (17) on a clean flat surface with seal grooves turned up.
Drop the four steel balls (19) in the four counter-bored holes at each end of the seal
grooves.
2. Lubricate seals (18) and insert in seal grooves in control chamber (17).
3. The tapered side of the seals must be pushed into the grooves and the ends must cover
the steel balls.
4. Install the control chamber (17) with seal (18) and steel balls (19) assembled over the
control vane (23). The seal must be against the cam. Rotate the chamber until it
passes over the control vane assembly, then rotate in the opposite direction until the
1/4” dowel pins (16) can be pushed through the chamber (17) and into the cradle (20).
Install chamber in the same manner on the other side of the cam.
NOTE: Two sets of chamber covers are available. The set marked CW must be
installed in the right hand rotation pump and the set marked CCW must be used
in the left hand rotation pump. (Rotation is determined facing the shaft end of
pump.) The covers must be installed with the tubing holes and the tapped holes
at the top of the unit.
5. Install chamber covers (15r) and (15l) on the control chambers (17) over the dowel pins
(16). The tapped holes must be at the top. Refer to the “T” marked on the rocker
cam (24) and cradle (20).
6. Install four 1/4 – 20 screws, two (11) and two (12), in each side and torque to 10 ft. lbs.
7. Install two 7/16-14 screws (10) in each side and torque to 45 ft. lbs.
8. Install O-ring 914) and plug (13) in each cover.
9. Install tubes (25) in reamed holes in each cover. These tubes must be a tight fit. If
tubes are loose, the ends can be expanded with a tapered punch.
10. Tap the tubes in place with a plastic mallet.
SERVO ASSEMBLY 1 . Install two orifice screws (8) in the servo stem (7).
2. Install servo plate with the screws through the servo stem. The orifice screw end of the
servo stem must be against the servo plate.
3. Position the stem and plate on the rocker cam input side (at 9 o’clock on “B” model or
3 o’clock on “A” models) with the screws positioned over the 10-24 tapped holes. Hold
the assembly against the cam and alternately turn the screws 1/2 turn each until the
stem and plate are firmly attached to the cam. Torque the screws (6) to 40 in. lbs.
Install set-screws (6a) over the screws (6) and torque to 5 ft. lbs.
CAUTION: The screws must not protrude from the servo plate.
PISTON AND SHOE ASSEMBLY 1. Install creep plate (5) over center post on rocker cam. Small O.D. of plate must face the
cam.
2. Install the seven piston and shoes (4b) in the shoe retainer (4a). Position the assembly
(4). Position the assembly (4) over the center post and against the creep plate.
3. Install thrust washer (2) over center post.
4. Five different retaining rings (1) are available for the hold-down assembly. Install the
thickest ring (1) with the dot up, that will fit in the groove on the center post and allow a
clearance of .002 to .004 between the shoe and creep plate. Grasp one piston and lift
tightly against shoe retainer to measure this clearance.
5. The piston and shoe assembly (4) should be free to rotate by hand. (5 ft. lbs. or less).
See Figure 4.
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