9
BP8085 Repair Instructions
Mounting the Valve Casing:
Put seal cases (38) in the centring holes of the valve casing. Then carefully push the valve
casing onto the centring studs (50A).
Tighten hexagon screws (49A) evenly and crosswise at 132.8 ft.-lbs. (180 Nm).
Important!
With no pressure in the pump, the torque tension on the screws (49A) must
be checked after 8-10 operating hours. Thereafter the tension is to be checked every 200
operating hours.
To Dismantle Crankcase Gear
Take out the plungers, intermediate casing and seals as described above.
Drain the oil by removing plug (12).
After removing the clip ring (33B), lever out the seal retainer (33) with a screwdriver.
Screw off gear cover (K3) and remove the cooling vane plate (K1) by taking off the screws
(K4). Then remove connecting rod screws (24).
Important!
The connecting rods are marked 1 to 3 for identifi cation. Do not twist the
connecting rod halves or interchange them. When reassembling, the connecting rods must
be fi tted in their exact original position on the crankshaft journals.
Push connecting rod halves together with the crosshead as far as possible into the
crosshead guides.
Take off the bearing cover (14/14A) and press out the crankshaft from the drive side.
Be careful not to bend the connecting rods.
Check running surfaces on the connecting rods (24), crankshaft (22) and crossheads (25).
Also check the surfaces of the crosshead bores in the crankcase for any unevenness.
Reassemble in reverse order.
Thread the long end of the crankshaft together with the inner bearing rings into the
crankcase. Then mount the outer bearing ring (20) and spacer ring (22A).
Fit the connecting rod halves in their exact original position and tighten at 36.9 ft.-lbs. (50
Nm).
Important!
A little clearance must be present to enable slight sideward movement of the
connecting rods on their journals.
Fit bearing cover (14A) and tighten screws (17) at 64.2 ft.-lbs. (87 Nm).
Adjust axial play (clearance) on the crankshaft to minimum 0.1 mm / max. 0.15 mm using
shims (21A/21B). The shaft should turn easily with little clearance. Connecting rods must
sit exactly in the middle of each crank pin. Fit the bearing cover (14) and tighten the screws
(17) at 64.2 ft.-lbs. (87 Nm).
Possible axial fl oat of the seal adaptor (33) is to be compensated with shims (33C).
Fit cooler plate (K1) and gear cover (K3) with their respective seals (K2).
