Usage:
Tachometer drive rotation is clockwise at half engine speed.
Drive end rotation is counterclockwise at half engine speed.
(1) 4L1648 Spring for overspeed trip (900-1100 rpm engines):
Length under test force ... .969 in.(24,61 mm)
Test force ... 1.12-1.24 lb.(5,1-5,6 kg)
Free length after test ... 1.172 in.(29,77 mm)
Outside diameter ... .406 in.(10,31 mm)
(1) 2L8705 Spring for overspeed trip (1200-1400 rpm engines):
Length under test force ... .969 in.(24,61 mm)
Test force ... 1.90-2.32 lb.(8,6-10,5 kg)
Free length after test ... 1.25 in.(31,75 mm)
Outside diameter ... .406 in.(10,31 mm)
(2) 7L2116 Spring for release rod:
Length under test force ... 4.03 in.(102,4 mm)
Test force ... 45 lbs.(20,4 kg)
Free length after test ... 7.03 in.(178,6 mm)
Outside diameter ... .579-.599 in.(14,71-15,22 mm)
(3) Distance from rod end to collar (4L8129) ... 1.89 in.(48,01 mm)
Distance from rod end to collar (6L9237-8L5299) ... 1.95 in.(49,53 mm)