ELECTRICAL EQUIPMENT—Q.208.Remove the shaft lock-nut, pinion stop, shimand spring. Pull the pinion forward about 1/4 in(6,35 mm).9.Apply a spring load to the drive end of the shaft.The spring at the commutator end must start tocompress between 13—19 lbf (5,9 to 8,6 kgf),reading to 19—25 lbf (8,611,34 kgf), after 1/16 in(1,6 mm) movement.10.Replace shaft nuts, shim and spring.PERFORMANCE TESTS1.Brushes to be bedded over at least 75% of theirarea.2.Fit the starter to a special flywheel rig andconnect the power supply.3.With a supply of 10 volts only, check that thestarter fully engages with the flywheel.4.With a 12 volts supply circuit, complete fiveoperations under each of the followingconditions, on a locked flywheel.(a)Distance between flywheel and pinion setat 0.068 in (1,73 mm).(b)Distance between flywheel and pinion setat 0.196 in (4.98 mm).PERFORMANCE FIGURESThe figures obtained must be within the following limits.1.Typical Lock Torque: 36.5 lbf ft (5 kgf m) with950-1050 A at 6.0 V.2.Typical Torque at 1250 -1300 rev/min: 12 lbf ft(1,7 kgf m) with 420 480 A at 9.5 V.3.Typical Light Running Current: 100-120 A at7,000 rev/min.INSULATION TEST1.Using a 500v megger, the following tests shouldshow an insulation resistance of not less than Imegohm.2.Lift earth brushes and check the main terminalto earth.3.With earth brushes still raised, check thepositive brush to earth.Insulated Return Electrical SystemWith this system, the thermostart starting aid isinsulated from the induction manifold by an insulated"BLOCK" bush. When a thermostart unit or insulatingbush is replaced, care must be taken not to exceed thetorque figure quoted on Page B.1. Overtightening ofthese parts can crack the insulating bush and couldcause hard starting and an electrical short.
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
