(c) Road-beds and Open Track
(1) On a curve, take the bolts out of the tie-plates connecting to sections of the outside rail, and scoop away the gravel, cinders, or dirt for a few feet on each side of the connecting joint.
(2) If by disconnecting the tie-plate at a joint and loosening sleeper nails on each side of the joint, it becomes possible to move a sections of rail, spread two sections of rail and drive a spike vertically between them.
(d) Oil and Lubrication
(1) See 5 b. (2) (b).
(2) Squeeze lubricating pipes with pincers or dent them with hammers, so that the flow of oil is obstructed.
(e) Cooling Systems
(1) See 5 b (2) (c).
(f) Gasoline and Oil Fuel
(1) See 5 b (2) (d).
(g) Electric Motors
(1) See 5 b (2) (e) and (f).
(h) Boilers
(1) See 5 b (2) (h).
(2) After inspection put heavy oil or tar in the engines" boilers, or put half a kilogram of soft soap into the water in the tender.
(i) Brakes and Miscellaneous
(1) Engines should run at high speeds and use brakes excessively at curves and on downhill grades.
(2) Punch holes in air-brake valves or water supply pipes.
(3) In the last car of a pa.s.senger train or or a front car of a freight, remove the wadding from a journal box and replace it with oily rags.
(7) Transportation: Automotive
(a) Roads. Damage to roads [(3) below] is slow, and therefore impractical as a D-day or near D-day activity.
(1) Change sign posts at intersections and forks; the enemy will go the wrong way and it may be miles before he discovers his mistakes.
In areas where traffic is composed primarily of enemy autos, trucks, and motor convoys of various kinds remove danger signals from curves and intersections.
(2) When the enemy asks for directions, give him wrong information.
Especially when enemy convoys are in the neighborhood, truck drivers can spread rumors and give false information about bridges being out, ferries closed, and detours lying ahead.
(3) If you can start damage to a heavily traveled road, pa.s.sing traffic and the elements will do the rest. Construction gangs can see that too much sand or water is put in concrete or that the road foundation has soft spots. Anyone can scoop ruts in asphalt and macadam roads which turn soft in hot weather; pa.s.sing trucks will accentuate the ruts to a point where substantial repair will be needed. Dirt roads also can be scooped out. If you are a road laborer, it will be only a few minutes work to divert a small stream from a sluice so that it runs over and eats away the road.
(4) Distribute broken gla.s.s, nails, and sharp rocks on roads to puncture tires.
(b) Pa.s.sengers
(1) Bus-driver can go past the stop where the enemy wants to get off.
Taxi drivers can waste the enemy"s time and make extra money by driving the longest possible route to his destination.
(c) Oil and Lubrication
(1) See 5 b. (2) (b).
(2) Disconnect the oil pump; this will burn out the main bearings in less than 50 miles of normal driving.
(d) Radiator
(1) See 5 b. (2) (c).
(e) Fuel
(1) See 5 b. (2) (d).
(f) Battery and Ignition
(1) Jam bits of wood into the ignition lock; loosen or exchange connections behind the switchboard; put dirt in spark plugs; damage distributor points.
(2) Turn on the lights in parked cars so that the battery will run down.
(3) Mechanics can ruin batteries in a number of undetectable ways: Take the valve cap off a cell, and drive a screw driver slantwise into the exposed water vent, shattering the plates of the cell; no damage will show when you put the cap back on. Iron or copper filings put into the cells i.e., dropped into the acid, will greatly shorten its life. Copper coins or a few pieces of iron will accomplish the same and more slowly.
One hundred to 150 cubic centimeters of vinegar in each cell greatly reduces the life of the battery, but the odor of the vinegar may reveal what has happened.
(g) Gears
(1) Remove the lubricant from or put, too light a lubricant in the transmission and other gears.
(2) In trucks, tractors, and other machines with heavy gears, fix the gear case insecurely, putting bolts in only half the bolt holes. The gears will be badly jolted in use and will soon need repairs.
(h) Tires
(1) Slash or puncture tires of unguarded vehicles. Put a nail inside a match box or other small box, and set it vertically in front of the back tire of a stationary car; when the car starts off, the nail will go neatly through the tire.
(2) It is easy to damage a tire in a tire repair shop: In fixing flats, spill gla.s.s, benzine, caustic soda, or other material inside the casing which will puncture or corrode the tube. If you put a gummy substance inside the tube, the next flat will stick the tube to the casing and make it unusable. Or, when you fix a flat tire, you can simply leave between the tube and the casing the object which caused the flat in the first place.
(3) In a.s.sembling a tire after repair, pump the tube up as fast as you can. Instead of filling out smoothly, it may crease, in which case it will wear out quickly. Or, as you put a tire together, see if you can pinch the tube between the rim of the tire and the rim of the wheel, so that a blow-out will result.
(4) In putting air into tires, see that they are kept below normal pressure, so that more than an ordinary amount of wear will result. In filling tires on double wheels, inflate the inner tire to a much higher pressure than the outer one; both will wear out more quickly this way.
Badly aligned wheels also wear tires out quickly; you can leave wheels out of alignment when they come in for adjustment, or you can spring them out of true with a strong kick, or by driving the car slowly and diagonally into a curb.