JETStream 4200 series - Crankshaft

Bareshaft Pump
65
Crankshaft
Removal
1. Remove the pump from the unit. Refer to “UNx
Pump” on page 63.
2. Open the rod box cover and remove the two
capscrews that secure the plunger coupling
(Figure 132) to the plunger and remove the
coupling.
Note: The coupling halves are a machined
pair. Keep the two halves together.
3. Remove the connecting rod end caps as out-
lined in “Rod Journal Bearings” on page 57.
4. Remove the 12 capscrews and washers that
secure the top cover (Figure 133) to the power
frame. Remove the cover and the gasket.
5. Remove the 12 capscrews and washers that
secure the rear cover (Figure 133) and belt
guard to the power frame. Remove the cover,
guard and gasket.
6. Pull the three connecting rod/crosshead
assemblies towards the uid end as far as
possible.
7. Remove the eight capscrews and washers
that secure the inboard side plate (Figure 133)
to the power frame.
8. Remove the side plate and shims. Keep the
shims together.
9. Remove the eight capscrews and washers
that secure the outboard side plate (Figure
133) to the power frame.
Plunger Coupling
Plunger
Figure 132: Plunger Coupling Removal.
8
9
4
3
1
7
5
6
2
10
11
12
1. Top Cover
2. Gasket
3. Outboard Side Plate
4. O-ring
5. Shim Pack
6. Shim Pack
7. Inboard Side Plate
8. Oil seal
9. O-Ring
10. Gasket
11. Rear Cover
12. Belt Guard
Figure 133: Power End Covers.