BY
Engr. I.A. Ola

 Selection ,Operation, sharpening, care and uses of shop tools and equipment.
 Wood working, Concrete and masonry, Iron working,
Blacksmithing, Welding, Cutting and brazing.
 Glazing and sheet metal work.
 Repair and maintenance of tractors and machinery.
 Building of equipment of equipment adaptable to form shop construction.
 Fabrication, maintenance, repair of farm field processing machines.

CRITERIA FOR SELECTING SHOP TOOLS
To select tools (hand tools or powered tools) the following points must be considered:
 Job or the task to be performed
 Tools and machine required
 Strength of materials
 Size of job
 Shape and specification (tolerance)
 Capacity of machine and tools
 Quality (Surface finishing and ecstatic value)

 HAMMER
1). HARD SURFACE HAMMER i) Cross and straight hammer : To beat sheet metals into shapes.
ii) Claw hammer: to remove or drive in nails into objects.
iii) Small ball peen hammer used for light jobs: for shaping thinner section of sheets metals.

iv) Sledge hammer : For heavy duty job requiring more striking force.
v) Mallet soft surface hammer: for striking objects with delicates surface or parts must not be destroyed.
The appropriate size and type must be used for the right job. Since:
F = ma ……………………………………(1) where
F = the striking force applied to the hammer edge via the handle

HANDLE
Fig. 1.1 Mallet
SURFACE
MADE OF
RUBBER
F = mg

Spanners are used to tighten or loosening of bolts and nuts are made of cast steels (vanadium or chromium steels). Are in different categories and make.
• Box spanners
• Rings
• Suckets
• Wrenches

BENCH VICE

• Center punch: to mark out center point on metals where holes will be drilled. Types ; Prick punch
Center punch
Hollow punch
Care; keep in appropriate storage place after use , blunt edge must be sharpened using the grinder avoid throwing tool on the floor of the workshop etc.
• Chisel: for cutting sheet metals up to 3mm in thickness. Thicker section requires the use of guillotine machine. Cutting edge is sharpened with the use of hand grinder. Types; Round nose
Cape
Diamond
Flat
Side

To grip objects and in various types such as:
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Combination slip joint
Side cutting pliers (cable cutting)
Round nose pliers
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Curve needle nose pliers (to pick pins)
Gripping pliers ( for holding objects together during welding operation etc)

Files used for removing small amount of material from metals and are in various categories (shapes or grades of the cutting edge) in terms of shape we have:
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Round file
Semicircle
Square
Rectangle (flat)
Warding
Pillar
Needle

Grades of files (single or Double-cut)
 Rough
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Bastard
Second cut
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Smooth
Dead smooth
 Hack saw ; for cutting of metals
 Power hack saw: for cutting thicker sections of metal.
 Plane saw : for cutting of woods

 Made of high carbon steels for drilling holes in object can be straight shank or tapered shank drills.
 Dull cutting edge can be sharpened using the grinder.
 Function of drift and drilling sleeve for tapered drill bits.
 Use of coolant in drilling operation

shank
Tapered shank drill
Cutting edge

 Tap and die
 Counter sunk
 Reamers
 Scrapers
 Snips
 anvil
 Grinder
 Hand drill
 Lathe tools;(turning tools, chamfering tools, boring tools
,parting tools, facing tools and thread cutting tools

 Lathe
 Drilling machine
 Milling machine
 Shaping machine
 Arc welder
 Gas welding apparatus

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Soft
Hardwood
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Economic value of timber
(i) Cheap
(ii) Availability
(iii) Easy to work on
(iv) Light to transport
(v) High salvage value
(vi) Non conductor of heat and electicity

 Wood classification:
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Exogenous trees
Endogenous trees
 Seasoning of Timber
This is the process of drying timber or removing moisture or sap present in freshly felled trees under controlled conditions.
(i) Artificial seasoning or kiln seasoning
(ii) Natural seasoning or air seasoning
 Defects of Timber
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Defects occurring during growth of a tree.
Defects occurring after felling of a tree.

 Preservation of Timber;
Chemical preservatives are used
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Tar oils
Water soluble chemical salts
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Organic solvent chemicals
 Method of application of preservatives;
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Brush and spraying method
Dipping or soaking method for 7days(steeping process) to attain chemical penetration of 3mm to 6mm.
Pressure treatment( preservatives is injected to the timber by pressure in a airtight steel containers called autoclave
 Adhesives used in Carpentry
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Animal glue
Resin glue

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Resin glue
Vegetable glue
Casein glue
Blood albumen glue
Gum arabic
Contact cement
Additional materials used in carpentry and joinery
 Nails
 Screws
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Bolt and nuts
Dowels
Carpentry tools
• Marking out and measuring tools:
 pencils, pencil compass, trammel points, marking gauge, mortise gauge, cutting gauge, four fold rule, steel tape, straight edge, try-square bevel square, combination set, calipers, dividers, wing compass, spirit level, plumb bob.
Cutting tools

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Saw( rip, cross cut, panel ,bow, jack, tenon and dowel tail)
Chisels axe
Plaining tools
Boring tools
Striking tools
Holding tools
Other tools screw driver pincers rasp and file scraper glass paper
Oil stone

 Carpentry joints
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Lap joints
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T-lap joints
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Dovetail lap joint
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Corner- lap joint
Cross-lap joint
Mitre joint
Butt joint
Mortise joint

 Identification of component of farm tractor
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Tractor
Engine (Engine block) 1-3-4-2
-fuel tank
-fuel pump
-fuel filters –primary and secondary once in fortnight
-fuel pipes
Injector pump
Nozzles
Fan belt
-fan blade –sucks in air to cool the radiator
-pulley

 Water pump (passage for water)
 Radiator and cap –temporal storage
 Hose
 Air cleaner
 -wet type
 -filament or filter
 Lubrication
 Dip stick
 Oil (SEA 40)
 Engine oil sump
 Passage for oil
 Engine oil sump pump

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Oil filter
Starter
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Alternator
Battery (240DC) –wet or dry cell
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Solenoid Switch
Terminal
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Exposed terminal
Transmission
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Wheel : steering –front wheel and rear wheels
Gear sticks –power steering hydraulic system
 Gear trains
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Pedals
- independent brake

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 clutch
-accelerator
-left hand lever
-clutch plate
-clutch disk
-gear train
Final drive
PTO shaft
Rear wheels
Hydraulic ram
Top links and two lower links
Draw bar (trailer)
Hydraulic output
Check chain
Universal shaft

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Check the Cooling System.
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Remove the radiator cap and check the level of the coolant
If the level is below 5cm firm the neck of the radiator refill the radiators to about 5cm of the radiator neck.
Check for leaks about radiator, radiator hoses and hose clamps
Remove trash collected on front of radiator screen
Check the crankcase oil level
 Check oil level position- don’t’ check the oil level while the tractors is running.
 Add oil it needed: it is extremely important that you use a clean container and clean oil if you want the tractors to continue to give good service.
Check the Battery
 Check to see the cables use firmly connected to the terminate
 Check the electrolyte level of each cell-add distilled water if necessary.
 Check for corrosion on the battery terminals: clean if necessary.
 Check the hold down clap, clamp firm it lose.

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Check the Tyres:
Check the tyres for the right pressure recommended by the manufacturers.
Check side walls for cuts or breaks
Check treads for nails, stones etc.
Check fuel level: Add if necessary
Check the fuel system
Check hose for leaks
For diesel fuel system, check for drain cock on:
Bottom of fuel tank
Bottom of first fitter
Top of sediment bowl. Open and drain about 1 pint of fuel to make certain that water and sediment are removed.
Lubricant with grease is not daily job but carry it out as regularly as recommended by the manufacturer.
Make sure your cloths are free from tears bulging pockets, flayed edges and heavy cutts. Also wear shoes with heels and tight soles.
Check miscellaneous items: water for loose nuts bents brachets that need straightening worm parts that need replacing, loose or worn fan belts loose wheel etc. starting a Diesel type engine:

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IMPLEMENT MAINTANANCE
 The tractor driver is responsible for opening implements or machine which he used with or tractor.
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All implements or machines titled with grease implies regaire grease twice daily or every 5hrs.
The oil level in gear boxes of P.T.O or pulley drives replacement or machine should be checked twice daily.
All nuts and bolts should be checks for tightens twice daily.
All tyre pressure should be checked daily
Adjustment of rubber belts or P.T.O drivers implements should be checked daily.
The hoses and nozzles of sprayer must be checked frequently when in use for leaks or blockages.
The coupling and adjustment of 3 pt linkages
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Leveling aim
Lift aim
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Check chain
Draft control level: soil engaging implement
Position control level: for min engagement implement.

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Materials used in manufacturing products
METALS
Ferrous metals
Non-ferrous metal
WOOD (TIMBER)
Soft woods
Hard woods
PLASTICS
Thermosetting plastics
Thermo
Metals
Ferrous metals contain iron as the main constituent. Such metals are pig iron, cast iron, wrought iron, steel e.t.c.
-Pig iron (crude form of iron) is used as a raw material for the production of various other ferrous metals (such as cast iron, wrought iron and steel). It is obtained by melting iron ores in a blast furnace at a temperature of 1500C.
Non ferrous metals contain metal other than iron as the main constituent e. g aluminium, copper, zinc, lead, brass, tin