Hydraulics - Seafish

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Ill The Author Jim Gifford is a lecturer at the Glasgow College of Nautical Studies. He was a Chief Engineer at sea and latterly with the Admiralty before taking up a career in teaching which has spanned more than 20 years. He is responsible for developing Open Learning materials in Marine Engineering subjects. <strong>Seafish</strong> Open Learning
A Guide for Open Learners This will help to explain what open learning is all about. It will help you to make the best use of your open learning module. WHAT'S SO GOOD ABOUT OPEN LEARNING? Open learning gives you freedom to choose. You study:- • What you like • Where you like • When you like • At a pace to suit you. You can pick the subjects you want. You don't have to be in a certain classroom at a certain time. You won't be bored because the teaching is too slow, or lost because it's too fast. You seldom need any qualifications before you are allowed to study. All this freedom lets you fit your studying into your daily routine. The best thing about it for most people is that they can study without taking valuable time off work. Modules are written in a way that allows you to study without help. However, it is expected that you will need assistance from time to time, this can normally be provided. THINGS YOU SHOULD KNOW ABOUT YOUR MODULES What is a module? A module is the name we have given to a study package. It will have a printed text. In a few of them there will be audio or video tapes as well. Each module will be divided into segments. You could think of each segment as a lesson. <strong>Seafish</strong> Open Learning
Page 1 and 2: SEA FISH INDUSTRY AUTHORITY Hydraul
Page 3 and 4: Hydraulics in Fishing Vessels An Op
Page 5: SEGMENT FIVE - HYDRAULIC OILS AND F
Page 9 and 10: VII S.A.Q/S are shown by a box with
Page 11 and 12: IX • Time spent just reading a mo
Page 13: XIII Objectives After completing th
Page 17 and 18: Working cylinder V 7 3 •< ► Loa
Page 19 and 20: Write down a list of the main compo
Page 21 and 22: In this type the rotor shaft is off
Page 23 and 24: 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.
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43 Segment Four — Hydraulic Syste
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45 K4SS^^ LINES AND LINE FUNCTIONS
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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
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55 First, identify each of the item
Page 77 and 78:
57 ® SAQ28 Using the diagram of Fi
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59 SUMMARY You have now completed S
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62 PROPERTIES OF HYDRAULIC OILS The
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64 (2) SAQ20 How is the viscosity o
Page 87 and 88:
66 (?) SAQ26 Using Table 3 determin
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68 Additives in Hydraulic Oils Many
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70 CONTAMINATION Dirt and other for
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72 • Metal wear particles • Pac
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74 Full flow filters are all fitted
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77 Segment Six — Maintenance and
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79 Cleanliness has top priority.
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81 Do not 'grip' a hot pipe. Try a
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83 Faulty Seals Faulty Seals on pum
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85 Excessive Noise Table 4 Seafish
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87 Incorrect Flow Table 6 Seafish O
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89 Faulty Operation Table 8 Seafish
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93 So you can see that there are ma
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95 Responses to the Self Assessment
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97 SAQ 6 Did you show the change in
Page 121 and 122:
99 SAQ9 The various properties whic
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101 SAQ15 SAQ16 A linear actuator p
Page 125 and 126:
103 SAQ20 (a) Viscosity increases a
Page 127 and 128:
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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