Sharp WQ-700H Specifications Page 71
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GOLDCUP CONTROLS SERIES 800
8A HYDRAULIC STROKER
CONTROL
S23-12268 (Feature 00 Pump)
S23-12946 (Feature 00 "R" version)
S23-12760 (Feature 01 Pump)
S23-12630 (Feature 02 Pump)
S23-12529 (Feature 03 Pump)
S23-15065 (Feature 04 Pump)
S23-12271 (Feature 0* Motor "A"
Input)
S23-12378 (Feature 0* Motor "B"
Input)
S23-12527 (Feature 1* Motor "A"
Input)
S23-12526 (Feature 1* Motor "B"
Input)
DESCRIPTION
DISASSEMBLY
See Figure 8A
REWORK OF WEAR PARTS
ASSEMBLY, 8A CONTROL
See Figure 8A
This control is used on both pump and motors. It consists of one spring centered
spool in the control cover that is operated by modulation ports P1 or P2. The control
may also be manually operated whenever the external control pressure is removed.
The control, consisting of the stroking piston and the centering spring, positions the
rotary servo proportionally to pilot or control pressure. With no external control pres-
sure and the centering spring properly adjusted, the stroking piston will position the
rotary servo: for pumps exactly at the zero stroke position, and for motors at the full
stroke position.
1. Remove screws (2) from control.
2. Remove control from pump.
3. Examine servo plate for excessive scratching on surface. 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 soc. setscrews from plate, then alternately loosening the
two button hd. screws under the setscrews.
4. Remove retaining ring (4) and press the shaft assembly through the valve body.
5. Examine shoes (8) and (18) for contamination in balance pads and excessive
scratching on shoe faces. Note the two shoes are not identical and must be installed
in the proper position upon reassembly.
6. Remove the plug (13) with the stop assembly intact.
7. Remove the centering adjustment screw (23) with the spool assembly and stop
assembly intact. Note: signal pressure setting is determined by the spring preload. Do
not disassemble or change unless setting is incorrect.
8. 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.
1. Apply pipe sealant to the 1/8" pipe plug (12) and install in the cover plate. Torque to
100 lbs-in. (11.3 Nm)
2. Thread trimmer locknut (22) all the way onto trimmer screw (23). Slip back-up
washer (21), small dia. first, onto trimmer screw and against locknut. Using a 3/4 - 16
hex nut, with a 1.030" (26.2mm) dia. x .030/.035" (0.76/0.89mm) deep c'bore, crimp
the washer onto the stop. Washer must be free to rotate slightly. Remove crimping nut.
71
Description Rework
Servo plate face Fine stone to remove raised burrs & dings
Shear seal Fine stone to remove raised burrs & dings. Note:
grooves to supply balance pads must be present
and adequate.
Control cover Stone or lap inside face to remove raised burrs &
dings.
Spool Break sharp edges or dings.
- 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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