Giant LP122A-3100, Инструкция по эксплуатации / Руководство по ремонту и обслуживанию

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To Dismantle Gear
7. After removing valve casing and plunger pipe, drain oil. Remove gear cover (4) and bearing cover (14).
Loosen connecting rod screws (24) and push the front of the connecting rod foward as far as possible into
the crosshead guide.
Important! Connecting rods are marked for identification. Do not twist connecting rod halves. Connecting rod
is to be reinstalled in the same position on shaft journals.
8. Turning the crankshaft (22) slightly, hit it out carefully to the side with a rubber hammer.
Important! Do not bend the connecting rod shanks. Check crankshaft and connecting rod surfaces, shaft seals
(15) and taper roller bearings (20).
To Reassemble Gear
9. Using a soft tool, press in the ourter bearing ring (20) until the outer edge lines up with the outer edge of the
bearing hole.
10. Install bearing cover (14) together with shaft seal (15) and o-ring (16). Fit crankshaft (22) through bearing
hole on the opposite side. Press in outer bearing (20) and tension it inwards with the bearing cover (14),
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 al least 0.1mm and maximum 0.15mm
by placing fitting discs (20A, 20B, 20C) under the bearing cover.
Important! After assembly has been completed, the crankshaft should turn easily with very little clearance.
Tighten connecting rod screws to 22.1 ft.-lbs. (30 Nm).
LP122A-3100 & LP250-3100 - Repair Instructions
6. Inspect surface of plunger pipe (29B) carefully. Remove any
chemical or mineral deposits taking care not to damage the
surface of the plunger. If plunger pipe is worn, remove the
plunger bolt (29C) , plunger pipe (29B) and spacer (29E).
Replace worn parts necessary. Note: Always use a new cop-
per gasket (29) when repairing the plunger assembly.
5. If there are signs of
oil leaking through
the plunger oil seals,
then replacment is
neccessary.Remove
the plunger pipe
(29B) before inspecting
oil seals. Dissassemble
the gear end and push out
the seals from the
back of the pump.
29E 29A 29B 29D 29C