Giant LP250W-MT 사용자 설명서

9

After removing valve casing (43) and plunger pipe (29B), drain oil.  Remove gear 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).

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 clear-

ance.  Tighten connecting rod screws (24A) to 310 in.-lbs.

24

13340

Inner Hex Screw, Connecting Rod

310 in.-lbs.

29C

07131

Tension Screw, Plunger

310 in.-lbs.

48

07156

Plug, Discharge

107 ft.-lbs.

49A

07158

Hexagon Nut, Stud Bolts

59 ft.-lbs.

06496 - 35mm H Bushing

07165 - 12.75” Cast Iron - 4 gr. - AB Section

07357 - Plated Steel Channel Rails

(L=11.75”xW1.88”xH=3.00”)