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Pump Mounting Selection Guide
Bushings
06496 - 35 mm H Bushing
Pulley & Sheaves
07165 - 12.75” Cast Iron - 4 gr.
AB Section
Rails
07357 - Plated Steel Channel Rails
(L=11.75”x W=1.88”x H=3.00”)
9
LP301A-5100 REPAIR INSTRUCTIONS
TO DISMANTLE GEAR END
After removing valve casing (43) and plunger pipe (29B), drain the oil. Remove the gear cover (4) and both bearing
covers (14). Loosen connecting rod screws (24A) and push the front of the connecting rod (24) forward as far as
possible into the crosshead guide.
IMPORTANT! Connecting rods (24) are marked for identification. Do not twist connecting rod halves. Connecting
rod is to be reinstalled in the same position on shaft journals.
Turning the crankshaft (22) slightly, hit it out carefully to the side with a rubber hammer.
IMPORTANT! Do not bend the connecting rod (24) shanks. Check crankshaft (22) and connecting rod (24) surfaces,
radial shaft seals (15) and taper roller bearings (20).
To remove the oil seals (31) use a wooden rod and sharply hit down on the oil seals from the crankcase (1). Note: when
replacing the oil seals, apply a small amount of locktight to the outside edges of each oil seal before re-inserting them
into the crankcase.
To Reassemble
Using a soft tool, press in the outer bearing ring until the outer edge lines up with the outer edge of the bearing hole.
Remove bearing cover (14) together with radial shaft seal (15) and o-ring (16). Fit crankshaft (22) through bearing
hole on the opposite side. Press in outer bearing and tighten it inwards with the bearing cover, keeping the crankshaft
in vertical position and turning slowly so that the taper rollers of the bearings touch the edge of the outer bearing ring.
Adjust axial bearing clearance to at least 0.1mm and maximum 0.15mm by placing fitting discs (20A and 20B) under
the bearing cover.
IMPORTANT! After assembly has been completed, the crankshaft should turn easily with very little clearance.
Tighten connecting rod screws (24A) to 310 in.-lbs. Re-assemble the fluid end (see instructions above).
Position Item# Description Torque Amount
24A 13277 Inner Hex Screw, Connecting Rod 310 in.-lbs.
29C 07131-0100 Tension Screw, Plunger 265 in.-lbs.
48 06077-0100 Plug, Discharge 107 ft.-lbs.
49A 07158 Hexagon Nut, Stud Bolts 59 ft.-lbs.
LP301A-5100 TORQUE SPECIFICATIONS