3-1-618 Page 26
6.
Using the tie rod wrench (refer to the
Special Tools section in the Parts
Manual) remove the tie rod. Note: the
tie rod should be supported either with
a hoist or another technician.
Gear Reduction Unit
NOTICE
This
assembly
requires
factory
tooling for helical gear timing during
reassembly, and therefore should not
be disassembled in the field. If
repairs are needed, the gear reducer
should be returned to the factory.
1.
Disconnect the gear reducer input shaft
from the transmission shaft.
2.
Disconnect the gear reducer lube hose
and remove the oil drain hoses from
the offset parallel gear drive section
and the transition section.
3.
Attach hoist with sling to gear reducer
lifting eyes.
4.
Remove the 24 bolts connecting the
gear reducer to the pump frame
5 Pull the gear reducer horizontally away
from the joint to clear the splined
crankshaft gear coupling.
6.
Cut the safety wire between the 18
bolts on the splined adapter and
remove
the
adapter
from
the
crankshaft.
7.
Install crankshaft retainer in one of the
24 holes used to secure the gearbox to
the power frame. This will prevent the
crankshaft from disengaging with the
frame (see Special Tools section of
Parts Manual).
8.
Move the gearbox and the splined
adapter to the service area.
Crankshaft Assembly
1.
Remove the pump from the trailer and
move it to service area. The pump
service area must have a capability to
turn the pump frame on its side and
end.
2.
Remove the fluid end as described in
"Fluid End Removal and Installation,"
page 21.
3.
Remove the oil stop head seal retainer
and crosshead guide end plate as
described in “Oil Stop Head Seal
Retainer and Crosshead Guide End
Plate,” page 24.
4.
Remove the crosshead assembly as
described in “Crosshead Assembly,”
page 24.
5.
Remove the crosshead guide and tie
rods as described in “Crosshead Guide
and Tie Rods,” page 25.
6.
Remove the gear reduction unit as
described in “Gear Reduction Unit,”
page 26.
7.
Remove the lube inlet cover (4 bolts).
8.
Remove the thrust bearing retainer
cover (12 bolts).
9.
Remove the thrust bearing retainer (12
bolts).
10. Remove crankshaft bearing retainer
(12 bolts).
11. Remove the rotary union.
12. Position the entire power end assembly
on the gear reducer end with the hole
where the rotary union was removed,
facing up.
13. Install a lifting eye in the tapped hole of
the crankshaft, typically used for the
rotary union (refer to the Special Tools
Section
in
the
Parts
Manual).
