Heating Oil Pump Coupling Alignment

1. Heating Oil Pump Coupling
Alignment
Martin Tyre Coupling

2. Tyre
Coupling
Driven
Shaft
Driver
Shaft
Centrifugal
Pump
Induction
Motor
Components that are involved in
coupling/shaft alignment is shown as in
figure given.

3. Preparation
Heating Oil Pump Coupling Alignment

4. 1. First step in any alignment process is
to find the datum point.
2. Knowledge in GD&T or machining
process will have a significant
advantage in determining the
location of any datum point. The best
hint is finding out which part had
been machined.
4. Hence, we should remove the tyre
element as it will interfere with the
alignment against the selected
datum.
3. This radial side of the coupling halves
will be selected as our datum
reference point.
5. Use 5mm Allen key to loosen the
clamping mechanism of the coupling
halves.
🔧

5. The tyre element should can be easily
pried open.
🖐
🖐

6. 1. Remove the tyre element.
2. The clamping pad can be left on the
coupling halves as long as it does not
interfere with the alignment process.

7. For the purpose of better illustration, the
clamping pad is removed

8. Prepare the radial surface or rim of the
coupling halves. Remove any burr and
rough edges.

9. Parallel Offset Alignment
Heating Oil Pump Coupling Alignment

10. Parallel Offset
1. Check for parallel offset.
2. Touch a straight edge, flat against the
radial surface of the rim.
3. Touch at 3 and 9 o’clock to check for
parallel horizontal.

11. Touch at 3 and 9 o’clock to check for
parallel horizontal. Parallel Offset

12. 1. Touch at 12 and 6 o’clock to check for
parallel vertical.
2. Use a light source to your advantage;
any light pass through the gap
indicates a parallel misalign
(translation).
3. Add shim according to the gap size.
Parallel Offset
🖐

13. 1. Touch at 12 and 6 o’clock to check for
parallel vertical.
2. Use a light source to your advantage;
any light pass through the gap
indicates a parallel misalign
(translation).
3. Add shim according the gap size.
Parallel Offset
🖐

14. Angular Alignment
Heating Oil Pump Coupling Alignment

15. Angular Alignment
1. Check for angular alignment.
2. Measure the gap of the coupling
distance with a caliper.
3. Measure at 3 and 9 o’clock to check
for angular horizontal.
🖐

16. Angular Alignment
Measure at 3 and 9 o’clock to check for
angular horizontal.

17. Angular Alignment
Measure at 12 and 6 o’clock to check for
angular vertical.
🖐

18. Angular Alignment
Measure at 12 and 6 o’clock to check for
angular vertical.

19. Finishing
Heating Oil Pump Coupling Alignment

20. 1. Make adjustment for parallel and
angular misalign.
2. Re-install clamping pad

21. Reinstall tyre element.
For perfect fitment:
1. Align the cut of the tyre element in
between clamping screw.
2. Align the driver coupling screw to the
driven coupling screw.
3. Tighten only the indicated screw (🔧)
on both side of the coupling to lock
the tyre element.
1
2
🔧
🔧

22. 🔧
1. Tighten the clamping screw in a
clockwise rotation while holding
down / closing the gap of the tyre
element
2. Close the gap as small as possible to
avoid tyre wrinkle during its high
torque operation.

23. 1. Inspect the coupling assembly by
rotating it with hand.
2. The coupling should rotate smoothly
with no ackward wobble or hop. If so,
indicate an angular misalignment.
3. The coupling should not roll back
against the rotation when hand is
lifted. If so, indicate an angular
misalignment.

24. End
Quiz Ahead

25. 1. Identifying Datum.
You were asked to install
a new pump on site. The
coupling has not yet
arrived. Upon site
inspection, you found out
that:
• The shaft size for both
pump and motor is
similar.
• Pump body made of
cast iron.
• The only machined
surface is the flange’s
raised face, pump
base, and shaft.
Your selected datum
would be:
A) Flange’s raised face
on suction side
B) Flange’s raised face
on discharge side
C) Top of pump adapter
D) Top of pump body
E) Pump’s shaft

26. 1. Identifying Datum.
You were asked to install
a new pump on site. The
coupling has not yet
arrived. Upon site
inspection, you found out
that:
• The shaft size for both
pump and motor is
similar.
• Pump body made of
cast iron.
• The only machined
surface is the flange’s
raised face, pump
base, and shaft.
Your selected datum
would be:
A) Flange’s raised face
on suction side
B) Flange’s raised face
on discharge side
C) Top of pump adapter
D) Top of pump body
E) Pump’s shaft
It is always a good idea to choose
machined parts as your reference.

27. 2. Leveling.
You were asked to install
a new pump on site. The
coupling has not yet
arrived. Using a water
level, you level at which
point/orientation?
A
B
C
D E
F
G

28. 2. Leveling.
You were asked to install
a new pump on site. The
coupling has not yet
arrived. Using a water
level, you level at which
point/orientation?
A
B
C
D E
F
G
Leveling means angular
vertical alignment, you
should choose either B,
C, and G.
• A doesn’t do anything.
• E and F is not your
recommended datum.
• D and E is for roll. We
only need parallel and
angular alignment.

29. 3. Vertical Alignment.
Now the coupling
arrived. After installation,
you found out the
assembly is misaligned.
Choose the best option.
A) Shim both A & C
B) Shim C only
C) Shim both C & D
D) Shim H only
E) Shim both E & F
A B C D
E F
G H

30. 3. Vertical Alignment.
Now the coupling
arrived. After installation,
you found out the
assembly is misaligned.
Choose the best option.
A) Shim both A & C
B) Shim C only
C) Shim both C & D
D) Shim H only
E) Shim both E & F
A B C D
E F
G H
This will solve parallel vertical issue
This will solve angular vertical issue

31. 4. Horizontal Alignment.
From the top view, you
found out the coupling
does not aligned
properly. Choose the best
option.
A) Translate A
B) Translate & Rotate B
C) Translate B & C
D) Rotate B
E) Translate & Rotate C
A
B
C
Translate
Rotate

32. 4. Horizontal Alignment.
From the top view, you
found out the coupling
does not aligned
properly. Choose the best
option.
A) Translate A
B) Translate & Rotate B
C) Translate B & C
D) Rotate B
E) Translate & Rotate C
A
B
C
Translate
Rotate

33. END
Heating Oil Pump Coupling Alignment