
15. Place a large (L) cutter on Shaft 1 with the AP positioned
at Point 6 on the shaft 1 (See figure 4-1.). Place a small
(S) spacer cutter on Shaft 2 with the AP positioned at
Point 3.
Place a small (S) spacer cutter on Shaft 1 with the AP
positioned at Point 3, then place a large (L) cutter on
Shaft 2 with the AP positioned at Point 6.
Follow the pattern below until all cutters and spacer
cutters have been installed.
Cutters and spacer cutters are very sharp. Be careful
handling them.
Shaft 1 Shaft 2
6L 3S
3S 6L
1L 4S
4S 1L
2L 5S
5S 2L
3L 6S
6S 3L
4L 1S
1S 4L
5L 2S
2S 5L
6L 3S ÅRepeat Starts
3S 6L
Cutter and Spacer Stacking Arrangement
16. Place an excluder plate over the top of each shaft down
on top of the last cutter and spacer cutter.
17. Place the bottom housing (2) upside down on the work
bench and gently push two seal cartridges (seal end
first) into the bores. The ball bearing should be facing
you.
18. Secure each cartridge with two butt screw and washers
(38, 39).
19. Gently lower the bottom housing down over the ends of
each shaft being careful not to damage the mechanical
seals.
20. Place the flat washer and castle nut on the end of each
shaft. Tighten castle nuts approximately ¾ of the way,
leaving them loose at this point. The castle nuts are the
prevailing torque type and will have resistance the entire
way up the thread. It will be necessary to hold the shafts
while you install the nuts.
21. Carefully lay the unit down on its side. Before you
completely tighten the two castle nuts in the bottom
housing, it will be necessary to hold the drive shaft to
prevent it from turning. You can either hold the shaft by
temporarily mounting the coupling half (43) or by
carefully wedging a small piece of soft metal between
the teeth of the two gears. After you have secured the
shafts, tighten both castle nuts (70 ft-lbs).
22. Place the housing gasket (3) and bottom cover (5)
against the bottom housing and secure them with six
socket head cap screws (33).
Page 6
23. Place a side rail gasket (37) against one side of the
bottom housing and attached the side rail (4) with two
cap screws and washers (28). Leave the screws loose
at this point.
24. Slide another side rail gasket between the top housing
and side rail at the top and secure with two more cap
screws. Repeat this process on the other side and
tighten all eight screws evenly.
25. For Models….M04F3, M06F3, M08F3, M10F3, and
M12F3
1. Place the gasket (40) against one side of the
cartridge body and place a flange housing (41)
against the gasket. Secure the flange with the
screws and washer (57). Place the gasket (52) and
inspection plate (53) against the flange housing and
secure with studs, washers, and nuts (54, 56)
2. Repeat the above procedure on the other side with
the second flange housing.
4-16. Reducer / Motor Assembly
1. Slide the key (29) and coupling half (43) down on the
drive shaft and secure in place with the set screw. The
root of the coupling teeth should be lined up with the end
of the shaft.
2. Place the O-ring (46) in the groove in the housing
adapter and place the drive adapter (42) on the housing
adapter. Secure the drive adapter with four hex head
screws and washers. The two longer screws thread into
the top housing along the outside and the two shorter
screws thread into the housing adapter.
3. Slide the key (29) and coupling half (43) on the reducer
shaft and secure in place with the set screw.
4. Lower the gear reducer (44) onto the drive adapter
carefully aligning the coupling halves. Align the holes in
the flanges and install and tighten the six hex screws,
washers and nuts (49).
5. Place the key in the reducer shaft and lower the motor
(45) down onto the reducer while aligning the key and
keyway. Attach the motor to the reducer with four hex
screws and washers.
4-17. TORQUE GUIDELINES CHART
Stainless Steel Bolts Carbon Steel Bolts
Size Max
Torque Size Max
Torque
NO. 10-24 22.8 in. lb. 5/16 - 18 10 ft. lb.
1/4 – 20 75.2 in. lb. 3-/8 - 16 21.7 ft. lb
5/16 – 18 132 in. lb. ½ - 13 43.5 ft. lb.
3/8 – 16 236 in. lb. 5/8 – 11 86 ft. lb.
1/2 – 13 517 in. lb. ¾ - 10 152 ft. lb.
Note: Torque values are from the Industrial Fasteners
Institute and Craftsman Corp.