Service manual

8
Y
Dial Indicator
θ
X
1
X
2
Dial Indicator
A. Face Check (Angularity)
Rotating both shafts together for one full turn, align
pump and driver until shaft centerlines are parallel
(θ = 0, X
1
= X
2
) within 0.005 inch (0.13 mm) FIM.
B. Face Check (Parallelism)
Rotating both shafts together for one full turn, align
pump and driver until shaft centerlines coincide (Y - 0))
within 0.005 inch (0.13 mm) FIM.
Figure 4 – Coupling and Hub Alignment
D.6.4 Aligning Flange Mounted Pumps and Drivers - See Figure 5
Mounting Flange
Figure 5 – Flange Mounted Pump
Shaft alignment requirements for flange mounted pumps are the same as for foot
mounted pumps. That is, shafts must be aligned within 0.005 inch (0.13 mm) FIM (Full
Indicator Movement) for face (angularity) and rim (parallelism) at or near coupling outer
diameter while rotating both shafts together one full turn (360°).
When a pump and driver are both flange mounted to a bracket, DO NOT assume bracket
will automatically align shafts to the above requirements. Brackets must be designed to
obtain/maintain required alignment as well as to support pump weight plus any (small)
residual piping forces without distorting. If at all possible, bracket design should include
adequate room to check shaft alignment with dial indicators with both pump and motor
mounted onto bracket. See Figure 4. If this is not possible, align bracket to driver shaft
(see Figure 6), then attach pump to bracket (assumes pump fits snugly into its mounting
bore in the bracket).