1. See figure 11. Remove 2 screws holding body (16) to cap assembly (1).
2. Remove all parts from body (16) except pin (30) and arm assembly (28). It is not
necessary to remove these parts unless broken or worn. Examine parts for wear or
damage.
3. Remove screw (3). Examine head for excessive wear, and body for smooth sealing
surface with O-ring.
4. See figure 6. Remove tube lines to cap assembly.
5. Remove screws holding cap assembly to pump body.
6. Remove cap assembly (1). Remove plug (4) with attached parts. Remove spring
(11) and spool (6).
7. Do not remove sleeve in body (1). Sleeve is pressed into cap and finished to size. If
sleeve or cap is worn, replace the cap-sleeve assembly (1).
8. Remove screw (13) and nut (14). Remove the retainer (7).
1. See figure 6. Install Avseal plug (9) in cap.
2. Install spool (6) into bore as shown. Install spring (11) over end of spool.
3. Install O-ring (8) on spring retainer (7). Install retainer (7), screw (13), and nut (14)
in plug (4).
4. Install O-ring (15) in bottom of bore as shown. Install O-ring (10) on plug (4). Install
plugs (4) and (12) in body (1). Torque plugs to 90 ft-lb., 122 Nm . Install O-ring (18) in
cap.
5. Turn screw (13) in until spring retainer (17) contacts spring (11). Turn an additional
1-1/2 turns and lock in position.
6. Note proper location for control on pump. Install O-rings on interface between cap
and pump control pad. Install cap on pump control pad, guiding the control piston into
the bore.
7. Torque two assembly bolts to 75 ft-lb., 102 Nm.
8. See figure 11. Apply Loctite 242 on threads of screw (3), lubricate the shank,
thread through the cap into the control piston, and torque to 5 ft-lb., 6,8 Nm.
9. Install minimum stop screw (24) and turn clockwise to stroke pump to full volume.
Measure height from control cap to top of screw (3). With control piston at full stroke,
dimension must be 0.75 +/- .03 in., 19,2 +/- 0,76 mm. Back out minimum stop screw
(24) till there is no contact with control piston.
10. Press dowel (30) into body (16), through the link (28), to 0.25 in., 6.35 mm below
surface. Apply Loctite hydraulic sealant to threads of screws (40) and install over dowel
(30).
11. Press spool (21) into retainer (19). Caution: do not use excessive force. Place
spool/ retainer assembly into spool (17) with spring (18) and washer (34). Secure with
retaining ring (33).
12. While sleeve (27) is engaged into dowel on link (28), slide above spool assembly
into bore of body (16), and through sleeve (27). Spool (21) must move freely and easily
at all positions of the link (28).
13. Assemble all other components into body (16) per figure 11. Torque plug (12) to 90
ft-lb., 122 Nm. Torque plug (21) to 50 ft-lb., 68 Nm. Torque plug (28) to 11 ft-lb., 15
Nm.
14. While spring retainer is engaging clevis pin (5) under dowel of link (28), slide the
other opening of spring retainer over the top of the screw (3). Attach body assembly
(16) to cap (1) with two screws and torque to 75 ft-lb., 102 Nm.
1. Plumb 1200 psi, 82.8 bar servo to servo supply port “X”.
2. Thread zero screw (24) so that pump is on stroke.
3. Start pump.
4. Supply signal pressure, to 250 psi, 17,2 bar to hydraulic stroker signal port “H”.
5. Adjust screw (9) until output flow is at the full stroke position. Lock in place.
6. Reduce signal pressure on port “H” to minimum. Back out zero screw (24) until
pump is at zero stroke. Lock in place.
7. Increase and decrease signal pressure between 0 and 250 psi, 17,2 bar several
times at approximately 500, 3000 and 6000 psi, (34,5, 207, and 414 bar) system pres-
sure. Pump stroke should follow signal pressure smoothly and proportionally. Full to
zero or zero to full stroke should be achieved in no more than 0.7 second. Full stroke
should be achieved at 210 psi, 145 bar. Zero stroke should be achieved at 50 +/-15
psi, 3,45 +/- 1 bar. Adjust signal pressure up to 175 psi, 12 bar from zero stroke, then
adjust down from full stroke to 175 psi, 12 bar. The flows at the two settings shall not
vary more than 2.5 gpm, 10 l/m from each other. When all adjustments are correct,
lock in place and install cap.on differential adjustment.
HYDRAULIC STROKER
HYDRAULIC STROKER
DISASSEMBLY
ASSEMBLY
TEST AND ADJUSTMENT
23
www.comoso.com
Содержание P05
Страница 47: ...47 NOTES www comoso com ...