Water Pump User Manual

Doc No: OMM50000903
Rev: B Page 55 of 65
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SIZE 0.500 0.625 0.750 0.875 1.000 1.125 1.250
Ft-lb 40 80 135 215 320 460 630
(N-m) 54 108 183 292 434 624 854
Table 5: Torque Values for Xylan-Coated Fasteners
12.0 Critical Clearances
When maintenance requiring disassembly of the power end is performed, the following
clearances should be checked to see if they are within factory specification or within
maximum allowable limits. Additional clearance is allowed for component wear. This
additional clearance is a maximum of .002 inches of total diametral wear that can be
added to the clearance values in Table 6. For radial clearance, use ½ of the total
diametral value.
All dimensions are shown in Inches.
DESCRIPTION L06 L09 L11 L12 L16
Crankshaft
Throw Diameter
(Stroke)
1.50 2.25 2.75 3.00 4.00
Crankshaft Pin or
Journal (OD)
2.311/2.312 2.8743/2.8748
3.4990/3.4995 3.4990/3.4995 3.4990/3.4995
Connecting Rod /
Crank Clearance
(Max. Total)
0.003 0.003 0.003 0.003 0.003
Crosshead Diameter
(OD)
2.123/2.125 2.749/2.750 3.121/3.123 3.121/3.123 3.122/3.123
Crosshead
Cylinder Bore (ID)
2.126/2.128 2.7515/2.7535
3.1245/3.1260 3.1245/3.1260 3.1245/3.1260
Crosshead to Bore
Clearance (Max.
Total)
0.005 0.0045 0.005 0.005 0.005
Wrist Pin
Bushing Bore (ID)
.8755/.8765 1.0005/1.0015
1.2505/1.2515 1.2505/1.2515 1.2505/1.2515
Wrist Pin to Bore
Clearance (Max.
Total)
0.002 0.002 0.002 0.002 0.002
NOTE: Clearances shown are total diametral values: For radial clearance use ½ the
value shown.
Table 6: Clearance Chart
Metric Conversion: 1 inch = 25.4 mm
1 mm = 0.03937 inches