3-9
Tabl e 3 -1. Tor q ue Va l ues
SIZE
T
R
UE RAN
E
DIAMETER THREADS
U
A
E
(INCHES) PER INCH
FT-LB MK
1/16 27 (pipe) 8to12 1.11 to 1.66 Pipe Plug --- Crankshaft
1/8 27 (pipe) 15 to 20 2.07 to 2.77 Oil Return Check Valve --- Crankcase
1/4 20 (pipe) 20 to 25 2.77 to 3.46 Pipe Plug --- Gauge Connection
1/4 20 10 to 12 1.38 to 1.66 Connecting Rod Capscrew
6to10 0.83 to 1.38 Oil Pump Drive Segment (Vane Pump)
1
428
12 to 16 1.66 to 2.21 Unloader Valve
C o v e r P l a t e --- P l a t e E n d
5/16 18
16 to 20 2.21 to 2.77
Bearing Head (Vane Pump)
20 to 30 2.77 to 4.15 Discharge Service Valve
Pump End Bearing Head
Bottom Plate --- Crankcase
3/8 16 40 to 50 5.53 to 6.92
Cylinder Head
End Flange
Shaft Seal Cover
1/2 13 55 to 80 7.61 to 11.06 Suction Service Valve
#10 32 4to6 0.55 to 0.83 Oil Pump Drive Segment (Vane Pump)
1-1/2 18 NEF 35 to 45 4.84 to 6.22 Oil Level Sight Glass
NEF --- National Extra Fine