CHAPTER-XII

DETAILED INSTRUCTIONS FOR INSTALLATION & MAINTENANCE OF MECHANICAL SIGNALLING EQUIPMENT

. INSTALLATION
. SECTION 'A' � CABINS
. SECTION 'B' - LEVER FRAME
12.1 Cabins
12.2 Conformity to drawing and specifications
12.3 Marking of parts
12.4 Assembling mechanical locking
12.5 Checking of components
12.6 Erection
12.7 Subsequent additions and alterations
12.8 Information to the Divisional Signal & Telecommunication Engineer
. SECTION 'C - LEAD OUTS (RODDING)
12.9 Type
12.10 Arrangement of Accommodating Cranks
12.11 Down rods
12.12 Rod connections to accommodating cranks
12.13 Crank fastening bolts
12.14 Movement of lead off cranks
12.15 Use of high cranks
12.16 Rod run on curves
. SECTION 'D' - POINT RODDING AND FITTINGS
12.17 Point Rodding
12.18 Alignment
12.19 Distance from the centre of track 
12.20 Branching Off
12.21 Rodding running under track
12.22 Fixing Roller Standard
12.23 Spacing of rollers
12.24 Location of cranks, compensators, couplings & lug eyes
12.25 Offsets in roddings 
12.26 Offset in cranks and compensators
12.27 Fixing Trestles of Point Rod Rollers
12.28 Fixing Trestles foundations
12.29 Provision of compensators
12.30 Fixing cranks and compensators   
12.31 Joints for connections to cranks and compensators
12.32 Joints for branching off
12.33 Location of screw joint
12.34 Point adjusting screws
12.35 Adjustable cranks
12.36 Bolts, Nuts, Washers & Pins
12.37 Washers
12.38 Coach screws
12.39 Reaming of pin holes
. SECTION 'E' - POINTS
12.40 Essential requirements before interlocking
12.41 Adjustment of Point Switches
12.42 Permissible Distances
. SECTION 'F' - FACING POINT LOCKS,  SWITCH &  LOCK
. MOVEMENTS AND SPRING POINT LEVERS - SELF REVERSING
12.43 Layout
12.44 Notches
12.45 Facing Point Lock-plunger type
12.46 Obstruction Test
12.47 Switch & lock layouts
. SECTION 'G' - LOCK BARS    
12.48 Length
12.49 Adjustment
. SECTION 'H' - POINT, TRAP AND SHUNTING PERMITTED
. INDICATORS          
12.50 Type, Provision, Placing and Indication
. SECTION T -  LOCATION OF SIGNALS     
12.51 Deviation to SOD
12.52 special instructions 
12.53 Inspection by a Signal sighting committee
. SECTION 'J' -  SIGNALS AND FITTINGS     
12.54 Signal arms and its fittings 
12.55 Slotting        
12.56 Shunt Signals
12.57 Balance Levers
12.58 Back Lights  
12.59 Lopping of trees obstructing visibility
12.60 Artificial backgrounds
12.61 Posts
12.62 Deck Boards
12.63 Provision of Signal Dubbers and Kerosene
12.64 Cleaning of Signal roundels and lamp lenses
. SECTION 'K'   - DETECTORS
12.65 Fitting and placing
12.66 Wire connections and adjustment
12.67 Signal Slide Notches
12.68 Obstruction tests
. SECTION 'U - SIGNAL WIRE RUN (SINGLE WIRE)
12.69 Spacing of pulleys
12.70 Sharp Diversions
12.71 Wire runs under track
12.72 Wire runs under level crossings
12.73 Wire runs on curves
12.74 Leading away wire from a main run
12.75 Bridge stakes
12.76 Wire crossing
12.77 Signal wires 
. SECTION 'M' - PULLEY STAKES AND PULLEYS   
12.78 Fixture and alignment
12.79 Fastening pulley brackets
12.80 Maximum spacing between the pulley stakes
12.81 Alignment of Pulley stakes 
. SECTION 'N'  WIRE JOINTS AND SPLIT LINKS     
12.82 Wire Joints
12.83 Split links
. SECTION 'O' - WIRE ROPE     
12.84 Galvanized wire rope
12.85 Wire rope round wheels
12.86 Wire rope on cabin wire adjusters
12.87 Precautions in cutting
12.88 Lubrication
. SECTION 'P' - WIRE ADJUSTING APPARATUS (SINGLE WIRE)  
12.89 Wire adjusting screw
12.90 Cabin Wire Adjuster
12.91 Additional adjusting screws
. SECTION 'Q' - FOUNDATIONS (SINGLE WIRE)     
12.92 Foundations generally
12.93 Foundations for cranks and compensators
12.94 Foundations for wheels, detectors, point indicators and dwarf signals ..
12.95 Fixture of cranks, wheels, detectors, point indicators and dwarf signals to foundations
12.96 Foundations for signals
12.97 Pits for foundation adjacent to tracks
12.98 Concrete foundations
. SECTION 'R' - DOUBLE WIRE INSTALLATIONS - INTERLOCKING FRAMES AND LEAD OUTS    
12.99 Type     
12.100 Double wire levers 
12.101 Size of Drums
12.102 Erection
12.103 Levers for operating Points, locks, detectors and signals
12.104 Clutch lever-adjustment of clutch  
12.105 Clutch Resetting Lever
12.106 Wire crosses
12.107 Double wire operation from single wire lever
12.108 Compensators
12.109 Application
12.110 Installation
12.111 Pulleys & Stakes   
12.112 Fixture and alignment of stakes
12.113 Running out wire
. DIVERSIONS IN TRANSMISSIONS       
12.114 Use of wire pulleys 
12.115 Use of wheel with wire rope
12.116 Wheel Guides
12.117 Length of rope and spacing of joints at diversions
. WHEEL BASE   
12.118 Fixing Wheels and Wheel Base foundations
. JOINTS    
12.119 Type and location
12.120 Disconnecting Link 
. ADJUSTING SCREWS 
12.121 Provision
12.122 Minimum Spacing
12.123 Opening
. POINT, LOCK AND SIGNAL MECHANISMS
12.124 Type     
12.125 Installation of mechanisms
12.126 Size of Wire 
. DETECTORS       
12.127 Fitting of detectors to Points
12.128 Connections 
12.129 Number and spacing
12.130 Size of wire 
12.131 Adjustment
12.132 Protecting Covers
. SECTION 'S' - PAINTING   
12.133 Equipment to be painted
12.134 Colouring Scheme 
12.135 Interval of Painting
12.136 Record of Painting
. GENERAL INSTRUCTIONS
12.137 Stores
12.138 Mixing of Paints
12.139 Painting of steel works
12.140 Enamel Signal Arms
12.141 Numbering of Points and Signals 
12.142 Dates of Painting
. MAINTENANCE
. SECTION 'A'- CABINS.
12.143 Cabins-cleanliness, repair and fittings
12.144 (Left blank Intentionally)
. SECTION 'B' - LEVER FRAME
12.145 Responsibility
12.146 Instructions for maintainers
12.147 Instructions for Junior Engineer (Signal)
. SECTION 'C - LEAD OUTS (RODDING)  
12.148 to 12.149 Lead outs
. SECTION 'D' - POINT RODDING AND FITTINGS
12.150 Examination 
12.151 Alignment
12.152 Rollers
12.153 Rollerfoundations
. SECTION 'E' - CRANKS, COMPENSATORS, SCREWS, BOLTS, NUTS, PINS AND COTTERS
12.154 Examination  
12.155 Replacement of cracked or broken parts 
12.156 Cleaning of oil holes
12.157 Screws, bolts and nuts
12.158 Adjusting Screws
12.159 Pins
12.160 Keys and Cotters
. SECTION 'F' - POINTS
12.161 Visual inspection
12.162 Responsibility of SSE/SE/JE (P-Way) & SSE/SE/JE (Signal)  
12.163 Damaged switches and packing of sleepers
12.164 Testing and adjustment
. SECTION 'G' - FACING POINT LOCKS, SWTICH & LOCK MOVE-MENTS AND SPRING POINT LEVERS - SELF REVERSING
12.165 Facing point locks
12.166 Switch & Lock Movement  
12.167 Loose or cracked parts
12.168 Cross Slides ..
12.169 Testing Switch and Lock movements and facing point locks
. SECTION 'H' -  LOCK BARS    
12.170 General
12.171 Testing Lock Bars
. SECTION 'I' -   DETECTORS     
12.172 Detector examination and lubrication
12.173 Detector notches
12.174 Cleaning of detector shoes and angle slides
12.175 Testing detectors
12.176 Replacement of cracked or broken parts 
. SECTION 'J' - SIGNAL WIRE RUN  (SINGLE WIRE)
12.177 Alignment
12.178 Wires generally
12.179 Wires under track
. SECTION 'K' -  PULLEY STAKES AND PULLEYS  
12.180 Pulleys and Pulley stakes 
. SECTION 'L' -  ELECTRICAL  REPEATERS AND SIGNAL LAMPS
12.181 Periodical inspection by JE/SE (Signal)
12.182 Examination and replacement of Signal & Indicator lamps
. SECTION 'M' -   DOUBLE WIRE INSTALLATIONS - INTERLOCKING FRAMES AND LEAD OUTS  
12.183 Transmissions Generally
12.184 Maintenance of Compensators
12.185 Testing Point, Lock, Detector and Signal Levers
12.186 Broken wire lock
12.187 Broken wire tests
12.188 Reconnection or repairs after wire breakage
12.189 Responsibility and Periodicity of Broken Wire Tests
12.190 Wire stretch on newly laid Double Wire transmission   
. SECTION 'N' -   PAINTING
. SECTION 'O' - MAINTENANCE   SCHEDULES
Annexure 5 Essential Requirements before interlocking of a point
Annexure 6 Colouring scheme
Annexure 7 Maintenance schedule for mechanical signalling