Sharp WQ-700H Specifications Page 61
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GOLDCUP CONTROLS SERIES 600
CODE 6C - HYDRAULIC
STROKER WITH BRAKE AND
BYPASS VALVE/ADJ. STOPS
S23-12296 Feature 00, CW -A Mtg,
CCW - B Mtg.
S23-12297 Feature 00, CW -B Mtg,
CCW - A Mtg.
DESCRIPTION
DISASSEMBLY
See Figure 6C
See Figure 6B-1
ASSEMBLY
This one side of center control actuates the rotary input shaft by means of a hydraulic
piston. The piston is spring loaded to zero stroke. Pilot pressure applied to the end
opposite the spring causes the piston to move in proportion to the pilot pressure, thus
positioning the rotary servo in proportion to pilot pressure. Maximum and minimum
displacements are adjustable from zero to full.
Within the rotary servo body is contained the brake and bypass valve option. A brake
spool, when energized, connects the brake port to servo pressure. When de-en-
ergized, a spring shifts the spool, connecting the brake port to tank. Another port,
located on the end of the brake valve, is closed by the energizing of the brake spool.
When de-energized, this port dumps both pump system ports to the replenishing
source, thus bypassing the small flow generated by slight errors on zero position.
The operation is controlled in this manner: A restricted servo flow is applied to shift
the brake spool. This flow is dumped when a slot in the servo plate aligns with a pas-
sage connecting to this spool. This occurs when the pump is on zero stroke. Another
restricted flow is applied to a spool adjacent to the brake spool. This metered signal is
connected to a port controlled by the input command spool. This port is set to open to
tank when the input command is at zero stroke.
The brake spool is thus de-energized to set the brake when BOTH the pump cam is at
zero stroke and the rotary servo is at zero command. If the pump is on stroke or the
input is on stroke, the brake spool is energized, releasing the brake.
1. Disconnect brake and bypass lines from control. Remove screws (10). Remove
control from pump. Examine servo plate for excessive scratching. Note if orifices in
stem are open. If servo plate is scratched or orifices appear to be plugged, remove
plate and servo stem by removing two socket set screws from plate, then alternately
loosening the two button head screws under the set screws.
2. Remove screws (22) and remove cover (21). Loosen screw (4).
3. Remove servo shaft assembly (23) and clamp (8).
4. Examine shoes (23-5) and (23-7) for contamination in balance pads or excessive
scratching on faces. Note: the two shoes are not identical and must be installed in the
proper position on reassembly.
5. Remove screws (24) and remove the centering adjusting group intact. Note: signal
pressure setting is determined by the spring preload. Do not disassemble or change
unless parts are damaged or setting is incorrect.
6. Remove screws (29) and cover (28) with assembled parts.
7. Remove spool (12). Do not remove stroker body from valve cover unless damaged,
or seals need replaced.
8. Remove plug (30). Remove plug (28) with attached parts. Remove spool (25).
9. Remove bypass valve body (39) with fitting (41) and piston (42). Remove plug (35)
and spring (34). Remove spools (33) and (36).
10. Remove shoe (48), and spring (47).
11. Examine two orifices (11) and orifice (10) in body for contamination. Examine
passages in body for free flow.
12. Clean and examine all parts for breakage or evidence of abnormal wear.
All parts are to be inspected and be free of material defects, dirt, scratches or any for-
eign material.
All parts are to be cleaned with a suitable cleaning solvent and all cores and passages
blown out with clean dry compressed air.
After cleaning and inspection, all parts are to be covered with a light film of oil and
should be protected from dirt and excessive handling until assembled onto the unit.
During assembly, lapped and ground surfaces should be kept lubricated and protected
from nicks or surface damage.
61
- DENISON HYDRAULICS 1
- GOLDCUP CONTROLS CONTENTS 3
- See Figure 1 7
- GOLDCUP CONTROLS SERIES 100 9
- FIGURE 1 9
- See Figure 2A 10
- GOLDCUP CONTROLS SERIES 200 11
- PARTS LIST 12
- FIGURE 2A 13
- CYLINDER CONTROL 13
- S23-12329 13
- See Figure 2H 14
- S23-12358 16
- FIGURE 2H 17
- 3 POSITION CYLINDER 17
- ADJ. MAX. VOLUME STOPS 17
- See Figure 4A 18
- GOLDCUP CONTROLS SERIES 400 19
- For Figure 4A - Rotary servo 20
- FIGURE 4A 21
- ROTARY SERVO 21
- See Figure 4C 22
- ASSEMBLY 23
- S23-12343 - 4B* Fixed stops 25
- See Figure 5A 27
- GOLDCUP CONTROLS SERIES 500 28
- TEST, PUMP CONTROL 28
- TEST, MOTOR CONTROL 28
- S23-12346 32
- FIGURE 5A-1 33
- SPRING CENTERED WITH TRIMMER 33
- S23-12540 - 5A* A Mtg 34
- 23-12539 - 5A* B Mtg 34
- S23-12540 35
- See Figure 5C 36
- See Figure 5C-1 37
- See Figure 5-C 38
- DRAWING PAGE 41
- FIGURE 5C 41
- S23-12347 42
- FIGURE 5C-1 43
- BRAKE AND BYPASS VALVE 43
- See Figure 60 44
- See Figure 60-1 44
- GOLDCUP CONTROLS SERIES 600 46
- FIGURE 60 47
- HYDRAULIC STROKER 47
- For Figure 60-1 - Servo for 48
- See Figure 6A 49
- See Figure 6A-1 49
- PUMP CONTROL PRESSURE 51
- MOTOR CONTROL PRESSURE 51
- For figure 6A hydraulic 52
- See Figure 6B 54
- See Figure 6B-1 54
- FIGURE 6B 57
- WITH BRAKE AND BYPASS VALVE 57
- For Figure 6B-1 - Brake and 59
- FIGURE 6B-1 60
- See Figure 6C 61
- FIGURE 6C 64
- ADJUSTABLE STOPS 64
- See Figure 7 66
- GOLDCUP CONTROLS SERIES 700 67
- FINAL ADJUSTMENT AND TEST 67
- INSTALLATION OF ANTI-BACK 68
- LASH SPRING 68
- SK-15045 68
- FIGURE 7 70
- FEEDBACK FOR 700 SERIES HI IQ 70
- SERVO VALVE CONTROL 70
- See Figure 8A 71
- See Figure 8A-1 72
- GOLDCUP CONTROLS SERIES 800 74
- MOTOR CONTROL SPRING 74
- ADJUSTMENT 74
- See Figure 8C 78
- See Figure 8C-1 79
- See Figure 8C-2 79
- PUMP CONTROL SPRING 80
- S23-12820 82
- Feature 00 82
- FIGURE 8C 84
- See Figure 9A 87
- 9A CONTROL TEST SETUP 89
- 9A PUMP TEST 89
- 9A MOTOR TEST 89
- Figure 9A Electric stroker 91
- FIGURE 9A 93
- ELECTRIC STROKER 93
- See Figure 9C 94
- S23-12925 (Feature 00) 98
- GOLDCUP CONTROLS SERIES 900 100
- FIGURE 9C 100
- BYPASS VALVE 100
- See S23-12299 101
- One side center controls 102
- See S23-12298, S23-12300 102
- (1 SIDE OF CENTER) 105
- CW-B CCW-A 105
- S23-12298 105
- CONTROL TORQUE LIMITER 105
- (BOTH SIDES OF CENTER) 106
- S23-12299 106
- CW-A, CCW-B 107
- S23-12300 107
- For stroke indicator 109
- GOLDCUP CONTROLS SEAL KITS 110
- DEFINITION & UNIT 111
- FLUID POWER FORMULAS 111
- SALES AND SERVICE WORLDWIDE 116
- Printed in U.S.A 116
- OPI 2M 10203 116
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