Komatsu 830E-AC Shop Manual page 659

22. Repeat steps 15 and 16 for installation of the
remaining pressure plate, steel rings, backup
ring, O-ring, and retainer and isolation plate.
23. Lubricate and install O-ring (24, Figure 3-14) in
connector plate (11). Install dowel (23) if
removed. Lubricate I.D. of bearing in the con-
nector plate (11). Install connector plate (11)
with flat washers and nuts.
24. Install dowel (22) if removed. Lubricate and
position O-ring (17) in transition plate (16).
Assemble bearing plate (15) to transition plate
and install cap screws (14). Tighten cap screws
to standard torque.
25. Lubricate O-ring (21) and position on bearing
plate (15). Install the assembled bearing plate
and transition plate (15 & 16) to the connector
plate (11) and secure in place with nuts (20).
Tighten nuts to standard torque.
26. Install coupling (19).
27. Lubricate the thru stud threads and install two
opposite stud nuts and hardened washers.
Tighten nuts to 325 to 339 N·m (240 to 250 ft
lbs) torque.
28. Using an 18 inch (45 cm) adjustable wrench,
check pump drive shaft rotation. The drive shaft
will be tight but should turn freely with a maxi-
mum of 7 to 14 N·m (5 to 10 ft lbs) torque, after
the initial surge. (Refer to Figure 3-15.)
29. If the shaft will not turn properly, disassemble
the pump and examine the parts for burrs or for-
eign material causing buildup or interference
between parts.
30. When the input shaft turns properly install the
remaining hardened washers and nuts. Tighten
nuts to 325 to 339 N·m (240 to 250 ft lbs)
torque.
L03039
31. Install a new O-ring on steering pump flange
and install steering pump to the transition plate
(16, Figure 3-14). Install cap screws and tighten
to standard torque.
32. Install companion flange on pump driveshaft. If
necessary, heat to 204° to 260°C (400° to
500°F) to ease installation.
Do not force flange onto shaft. Be certain flange
is bottomed on shaft before it cools.
33. After flange has cooled, install nut and washer
on pump shaft. Tighten to 407 N·m (300 ft lbs)
torque.
FIGURE 3-15. PUMP ROTATION CHECK
1. Wrench
2. Input Shaft
Hydraulic Component Repair
3. Pump
L3-15