Section 705c states, 'In case there are more than 1/3 of total cells with low specific gravity, the entire set should be replaced.'

Section 709c (Do's) includes 'Maintain proper alignment between axle pulley and alternator pulley.' Misalignment causes uneven belt wear and premature failure.

Section 702f defines the purpose of the RJB, and section 705d mentions checking the rotary switches for correct operation.

Section 703e states, 'If needed change the regulator and ensure the generator by running the alternator with a portable motor.'

Section 703j warns against using incorrect fuses as they are safety devices. An oversized fuse will not protect the circuit by blowing during a fault, potentially causing major damage or fire.

Section 705f specifies, 'Studs used for fixing the fan to coach body, shall be checked and tightened, wherever necessary.'

Section 703b instructs to 'Check the continuity of field and phase winding with the help of test lamp/ multi-meter.'

Section 707 explains that this grease is applied to prevent reformation of the oxide film, which would otherwise lead to poor conductivity and heating.

Section 709a (Do's) states to use them 'for reducing the vibration of terminal connections.'

Section 706a (and 705c) instructs to check cell voltage on full load and replace cells showing reverse and low voltage.

Section 703e states, 'If the terminal board is found affected due to heat, replace terminal board with new one.'

Section 703f instructs to 'Use a clip on D.C. ammeter of 0-25 A range to check up the battery charging current.'

Section 708f explicitly states, 'The cables used for re-wiring shall be as per IS:694-1990 (Third Revision).'

Section 703j states, 'A coach with negative earth fault... which could not be attended in time, can be given in service in case of emergency... for attention... during the next trip.'

Section 708f specifies that flexible conduits used under the water tank shall be as per IS:6946.

Section 703f mentions checking the floats of each cell to check for correct electrolyte level, indicating the float guide's purpose for level indication.

Section 708e instructs to clean them thoroughly and protect them from further corrosion by applying petroleum jelly or Vaseline.

Section 708a (Temperature Rise Test) specifies that the power diode should not exceed 100°C at an ambient of 50°C.

Section 708a (No Load Test) defines cut-in speed as the speed at which generation starts and states it should not be more than 357 rpm at 108 volts.

Section 708a (No Load Test and Load Test) specifies that the voltage should not exceed ±5% of the set voltage.

Section 708h (Note) states, 'Induction heater/oil bath shall be used for heating the bearing to the required recommended temperature.'

Section 705b instructs to 'Watch for shifting of axle pulley by observing the white band on either side of pulley.'

Section 709c (Do's) states, 'Replace pulley with burn out grooves i.e. 0.8mm depression on sides and bottom of grooves.'

Section 709c (Do's) specifies a gap of 55 mm for 4.5 kW alternators and 75 mm for the larger AC coach alternators.

Section 709b (Don'ts) clearly states not to disturb the settings of the regulator, implying they are critical pre-set adjustments.

Section 708f states that rewiring shall be done on a condition basis or planned on the basis of a life of 20 years for cables.

Section 708e specifies, 'Record the capacity of the battery during discharge. It should not be less than 80% of the rated capacity.'

Section 708e states, 'Record lug date to determine the life of the battery.'

Table 7.2 in section 703f provides a 6-month cycle for pilot cells, and section 705c states, 'Change the marking of the pilot cell as given in table 7.2.'

Section 705g instructs to stencil these legends if not already done, for clear identification of the light controls.

Section 705a instructs to 'Open inspection cover of regulator. Blow dust with a portable blower. Secure covers tightly after inspection.'

Sections 705e and 707 state that under adverse weather conditions, a minimum IR of 1 Mega-ohm is acceptable.

Section 704a instructs to use only hard wood coated with acid resistant paint. It explicitly says, 'Never use untreated wood or plywood for packing of cells/ mono block.'

Section 704a gives this detailed instruction for cleaning sulphated connections.

Section 703j states, 'Poor chipping of cable, poor crimping of cable lugs and loose connections in terminals will result in excessive heating and discoloration of lugs, tapes and cables.'

Section 703j warns, 'The chipping of insulation is a dangerous practice this leaves permanent scratch on the cable. The taped conductor will not be quite satisfactory.'

Section 703h states, 'Check the fuse for fans and ensure that it is of correct size (35 SWG) tinned copper.'

Section 703h specifically instructs, 'If the commutator is dirty, clean the surface with sand paper of 0/0 size.'

Section 703h provides a clear troubleshooting flowchart: if shorting the switch doesn't work, the next step is to 'Test for supply at the 2way connector terminals near the fan.'

Section 703f advises that if any cell needs too much water, you should 'watch for crack in the cells and also check the voltage on load.'

Section 703f specifies this exact procedure for discharged batteries.

Section 703f states that pilot cells are treated to know the condition of cells in a battery, and they are changed monthly to ensure the true condition of the whole battery is reflected.

Section 703c explains that a clean metallic sound indicates tightness, while a dull sound indicates looseness.

Section 703b gives a specific warning: 'Never energize field from battery in case of failure of field circuit diode in regulator. Apart from non regulation, this may cause permanent damage to field windings.'

Section 703b outlines the troubleshooting steps: after checking the fuse, the next step is to 'Check for loss of residual magnetism with the help of voltmeter across the field terminals.'

Throughout the document (e.g., 703b, 703c), split pins are checked for availability. They are a standard safety fastener used to secure castle nuts and prevent them from loosening due to vibration.

Section 702c lists the advantages of VRLA batteries. While they are maintenance-free, the text does not explicitly claim they have a longer lifespan than all other types.

Section 702b lists the functions of the RRU as rectification, regulating voltage, and regulating output current.

Section 702a mentions that belts are kept under tension by a spring-loaded belt-tensioning device, implying automatic adjustment to maintain correct tension.

Section 702a explicitly describes the 4.5 kW Brushless alternator as consisting of these two parts.