Replace The Bushing - Hitachi NEXT Series Service Manual

4.20 Replace the Bushing

4.20.1 Main motor removal
4.20.2 Oil pump motor removing
4.20.3 Oil pump gear shaft removal
Oil Pump Gear Shaft
Oil Pump Gear
4.20.4 Bull gear removal
① Remove the gear retaining plate. Keep in mind that M20 bolt is the left hand screw.
② Put the jig for bull gear removal (1) and (2) indicated in the next page on the bull gear.
③ Tighten the jig (2) bolt to remove the bull gear.
④ Remove the key.
Hold the bull gear without drop.
Bull gear
(Ref. 4.19 Main motor removal)
(Ref 4.17 Oil Pump motor and Airend removal)
Removal hole (M10)
M10 bolt
M20 bolt (left hand screw)
Gear retaining plate
Confidential to Customer
① Remove the 6×M10 bolts.
② Screw the M10 bolt into the removal holes on the oil
pump gear shaft.
Tighten the bolt to remove the oil pump gear shaft.
It is not necessary to remove the oil pump gear
from the oil pump gear shaft.
Pull-out tool
48