Hydraulics - Seafish

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56 L t^J L.l^- Figure 55. <strong>Seafish</strong> Open Learning
57 ® SAQ28 Using the diagram of Figure 55 identify the following components using the letters in the circles: 1. Pump 2. Motor 3. Suction Filter 4. Two-Way non-return valve 5. Non-return valve with restrictor 6. Spring loaded non-return valve 7. Relief Valve 8. Variable pressure relief valve 9. Stop valve 10. Directional spool valve 11. Delivery line filter with by-pass 12. Return line filter with by-pass 13. Motor brake cylinder 14. Water cooled heat exchanger <strong>Seafish</strong> Open Learning
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SEA FISH INDUSTRY AUTHORITY Hydraul
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Hydraulics in Fishing Vessels An Op
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SEGMENT FIVE - HYDRAULIC OILS AND F
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A Guide for Open Learners This will
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VII S.A.Q/S are shown by a box with
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IX • Time spent just reading a mo
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XIII Objectives After completing th
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Working cylinder V 7 3 •< ► Loa
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Write down a list of the main compo
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In this type the rotor shaft is off
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8 Pressure Control Valves Positive
Page 25 and 26: 10 Relief valves are either pre-set
Page 27 and 28: 12 (A) From Pump (P) i a(B) Raise H
Page 29 and 30: 14 Out Out Globe valve Figure 17. S
Page 31 and 32: 16 (?) SAQ25 Explain how a relief v
Page 33 and 34: 18 The cylinders shown in Figures 2
Page 35 and 36: 20 Figure. 31. Figure 32. Port A Po
Page 37: 22 Which types of pumps can be used
Page 41 and 42: 24 Hydraulic Pressure The pressure
Page 43 and 44: 26 In order to help you to compare
Page 45 and 46: 28 ® SAQ18 Using Figure 35 on page
Page 47: 30 ® SAQ29 When a hydraulic motor
Page 51 and 52: 32 Rotor Inlet External Gear Pump F
Page 53 and 54: 34 The vanes are pushed out by cent
Page 55 and 56: 36 Piston Pumps All piston pumps de
Page 57 and 58: 38 Drive shaft flange Piston Yoke c
Page 59 and 60: 40 Eccentric Oil outlet Figure 49.
Page 63 and 64: 43 Segment Four — Hydraulic Syste
Page 65 and 66: 45 K4SS^^ LINES AND LINE FUNCTIONS
Page 67 and 68: 47 PUMP ONE-WAY VARIABLE OUTPUT PUM
Page 69 and 70: 49 • Pilot pressure means that oi
Page 71 and 72: 51 ® A reversible motor with a bra
Page 73 and 74: 53 (?) SAQ15 Using the information
Page 75: 55 First, identify each of the item
Page 79: 59 SUMMARY You have now completed S
Page 83 and 84: 62 PROPERTIES OF HYDRAULIC OILS The
Page 85 and 86: 64 (2) SAQ20 How is the viscosity o
Page 87 and 88: 66 (?) SAQ26 Using Table 3 determin
Page 89 and 90: 68 Additives in Hydraulic Oils Many
Page 91 and 92: 70 CONTAMINATION Dirt and other for
Page 93 and 94: 72 • Metal wear particles • Pac
Page 95 and 96: 74 Full flow filters are all fitted
Page 99 and 100: 77 Segment Six — Maintenance and
Page 101 and 102: 79 Cleanliness has top priority.
Page 103 and 104: 81 Do not 'grip' a hot pipe. Try a
Page 105 and 106: 83 Faulty Seals Faulty Seals on pum
Page 107 and 108: 85 Excessive Noise Table 4 Seafish
Page 109 and 110: 87 Incorrect Flow Table 6 Seafish O
Page 111 and 112: 89 Faulty Operation Table 8 Seafish
Page 113 and 114: 93 So you can see that there are ma
Page 117 and 118: 95 Responses to the Self Assessment
Page 119 and 120: 97 SAQ 6 Did you show the change in
Page 121 and 122: 99 SAQ9 The various properties whic
Page 123 and 124: 101 SAQ15 SAQ16 A linear actuator p
Page 125 and 126: 103 SAQ20 (a) Viscosity increases a
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105 SAQ26 SAE 20W/30 oil will have
Page 129 and 130:
Other modules in this series which
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Hydraulics - Seafish

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