Giant P435, Инструкция по эксплуатации / Руководство по ремонту и обслуживанию

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9
Gear End
If oil leaks where the plunger (16) extends from the crankcase (1), the oil seals (19) and plungers (16)
must be examined and replaced if necessary. Remove oil plug (5) and drain oil; remove crankcase
cover (3). Remove valve casing (26), and seal case (20). Then remove plunger pipes (16B) and oil
scrapers (16H) as described above.
IMPORTANT! Before removing connecting rods be aware of their position on the crankshaft so as to
return them to the same location and orientation when re-assembling.
Remove screws from connecting rods (15), separate the back connecting rod half from the crankshaft
and the front connecting rod half. The connecting rod halves must be kept as pairs - do not mix them
up. Push connecting rod shaft as far as possible into the crosshead guide. Remove screws (10) and
pry bearing covers (7,8) off gently with a screwdriver.
Carefully remove crankshaft (13) by threading it through the connecting rods (15), making sure not to
bend the connecting rods. Remove and disassemble connecting rods and plungers (16) paying close
attention not to damage the plungers. Pry out oil seal (19) using a screwdriver. Examine plunger sur -
faces (16A) and replace if necessary.
To re-assemble, first press the oil seal (19) into the crankcase. Then insert connecting rods with plung -
ers remembering their original location. Thread in the crankshaft (13). Replace bearing cover (7) and
o-ring (9) together with the radial shaft seal (11) and roller bearing (12) and fix in place with screws
(10). Replace roller bearing (12), bearing cover (8) and o-ring (9). Adjust the clearance by fitting shims
(8A) under the bearing cover as required to ensure that the crankshaft (13) turns easily without play be -
ing felt. Finally, mount connecting rod halves on crankshaft matching them with other half and tighten
screws (15) to 97 in-lb (11 Nm). Replace crankcase cover (3) and o-ring (4). When remounting the
valve casing (26), tighten hexagon socket screws (34) to 30 ft.-lb (40 Nm).
To Move Crankshaft to Opposite Side
Remove the valve casing (26) and seal case (20). Then rotate the crankcase 180°. Interchange the oil
plug ((5B) with oil dipstick (2). Rotate the crankcase cover (3) 180°. Remount the valve casing together
with the seal casing and the seal adapters (20). Make sure that the seal adapters are rotated in
order that the bores face downwards.
Contact Giant Industries for service school information.
Phone: (419) 531-4600