Instruction Manual for F1300/1600 Mud Pump
30
3.7 Installing of Crosshead
The crossheads in the pumps can be installed through the front (fluid end) or back end of the
crosshead guide. Refer to Fig.20, when installing crossheads, and observe the following precautions:
Fig.20
1) Thoroughly clean all dirt or contamination and remove all burrs or rough edges from OD of the
crosshead, crosshead pin bores, and inner bore of crosshead guide. Dry crosshead pin bore so taper
bore connection will make up metal to metal See Note.
2) Position “eye” of eccentric at the opening in the side of the crosshead guide. Block eccentric strap
so that crosshead will clear the “eye” as it is sliding into position to where the crosshead pin holes are
in alignment. Refer. Fig 20.
3) Install the left hand crosshead first, rotate crankshaft assembly to make “eye” into center
crosshead and right hand eccentric strap “eye” back, take down mud guard (1 in Fig.21), and push
right crosshead to the frame for enough space to install Mid-crosshead and then right crosshead.
Note: If an old crosshead is reused again, do check the sliding surface for wear or score. If necessary,
the crosshead can be switched to opposite sides of pumps, that is L/R crossheads interchange their
positions, and turn it 180°to make the smooth surface at the bottom of crosshead. Mid-crosshead
also can be rotated by 180°,and at this time crosshead pin should be inserted from opposite side of
original side. Do not insert crosshead pin into cone bore until crosshead pin retainer has been
installed.
4) Install crosshead pin retainer (2) and bolts (3) and rotate pin until the four crosshead retainer
holes with crosshead bolt holes (4) are in an alignment. Install the crosshead retainer bolts and tight
by hand. Ref. to Fig 21. The oil groove of crosshead pin retainer should be upward.
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