Torque Specifications - Giant LP121A-0011 Manual

LP121A, LP121A-0011, LP200, LP250, and LP250W-MT - Repair Instructions
To Dismantle Gear End
After removing valve casing (43) and plunger pipe (29B), drain oil. Remove crankcase cover (4)
and bearing cover (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 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. (35 NM).
LP121A, LP121A-0011, LP200, LP250, and LP250W-MT Torque Specifications
Pos. Item #
1 07759
6 05943
10 01010
12 07109
17 07114
24 13340
29C 13031
31 07133
48 06077
49 07157
49A 07158
Description
Crankcase
Oil Sight Glass
Cylinder Screw
Plug
Hexagon Screw
Connecting Rod Assembly
Tension Screw
Radial Shaft Seal
Plug
Stud Bolt
Hexagon Nut
Lubrication Info
Molycote Cu-Paste
Loctite 572
Loctite 243
Loctite 403
Loctite 270
9
Torque Amount
29 ft.-lbs. (40 Nm)
221 in.-lbs. (25 Nm)
29 ft.-lbs. (40 Nm)
221 in.-lbs. (25 Nm)
22 ft.-lbs. (30 Nm)
26 ft.-lbs. (35 Nm)
107 ft.-lbs. (145 Nm)
59 ft.-lbs. (80 Nm)