Hydraulics - Seafish

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VIII HELP IF YOU GET STUCK At the time of obtaining your module you will be told of any support which can be arranged. This might be through one of the following: • Telephone • Face to face meeting • Letter • Tutor marked assignment Questionnaire Some modules will be accompanied by questionnaires. The questionnaire is your chance to help us. Your answers are our way of finding out if any changes are needed. If there is one, please remember to fill it in and return it. HINTS ON STUDYING When? Try to get into a regular study routine. Set aside times for study but be ready to give and take a bit. Miss one of your planned sessions if you must, but try to make it up later. Set yourself realistic targets such as 'I will finish segments one and two by this weekend' and stick to them! Grab the chance to study at odd moments. You'll be amazed how much you can learn in fifteen minutes. It's difficult for the average person to really concentrate for more than 20 minutes at a time anyway. A word of warning - don't think you can learn anywhere. You need to be able to concentrate, there are often distractions which prevent this. <strong>Seafish</strong> Open Learning
IX • Time spent just reading a module is not the same as time spent learning. • You must become involved, the best learning happens when you're active, e.g. answering questions and making notes. • Don't study too long without a break. This module will remind you of suitable places to stop for a while, but if you need a break earlier, take one. It's entirely up to you. Where? Try to find somewhere where you will not be distracted. Almost anywhere will do. It all depends on how you are placed at home and at work. Don'tforget your local library. Fishermen might find their local mission is able to help, especially with video equipment. The secret is, be flexible. If the kids are having a party, go to Auntie's. If she's not in, go to the library. All you need is somewhere where you can get on with it and not be disturbed. Carry your module with you when you can. Try to find gaps in your normal routine when you could do some useful work. Now that you've decided to have a go, stick with it! Don't give up. Most people find studying hard at times, this is quite natural. It is also quite natural to need help with parts that you find especially difficult. I'm sure you'll find it worthwhile. <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 and 6: SEGMENT FIVE - HYDRAULIC OILS AND F
Page 7 and 8: A Guide for Open Learners This will
Page 9: VII S.A.Q/S are shown by a box with
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.
Page 63 and 64:
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
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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 and 76:
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
Page 83 and 84:
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
Page 117 and 118:
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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