Viking Pump TSM610: Offset Gear Reducers - Manual (Page 5)

SECTION TSM 610 ISSUE G PAGE 5 OF 8
ASSEMBLY
“B” Reducer Assembly - See Fig. 8
ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART
1 Drain Plug 11 Ball Bearing 19 Snap Ring (for 6.27 to 1 ratio only)
2 Breather 12 Ball Bearing 20 Pinion and Shaft
3 Pipe Plug (Set-2) 13 Spacer (7.65 to 1 Ratio - 2 Req’d) 21 Snap Ring (Set-2)
4 Capscrew (Set-7) 14 Gear 22 Lip Seal (Set-2)
5 Nut (Set-7) “B” only 15 Key 23 Gear Case
6 Dowel Pin Locating (Set-2) 16 Gear Shaft
7 Gear Case Cover 17 Ball Bearing
8 Gasket 18 Ball Bearing
1. Install the ball bearing on the pinion and shaft. Be sure
the bearings are seated firmly against the shoulders on
the shaft.
NOTE: The “B” reducer with 6.27 to 1 ratio requires a snap
ring. This snap ring must be installed in the groove on the
shaft prior to bearing assembly. The bearing should be
seated against the snap ring.
The “B” reducer with 7.65 to 1 ratio requires two spacers,
one on the pinion and shaft and one on the gear shaft.
The spacer for the pinion and shaft should be installed
with bevelled edge toward bearing. Install the ball bearing
on the pinion and shaft, seating the bearing firmly against
the spacer.
2. Install the square key in the gear shaft and press the gear
into place. Be sure the gear seats against the shoulder on
the shaft.
3. Place the spacer on the gear shaft with the bevelled edge
toward the gear. Install the bearing over the gear shaft and
seat firmly against the spacer. Install a second bearing on
the large end of the gear shaft and seat the bearing firmly
against the shaft shoulder.
4. If the lip seals have removed during disassembly place
the gear case and cover, gaskets face down, on a surface
which will not mar the face. Be sure the snap rings are in
the face and cover. Put gasket sealer on the O.D. of the
5. Block the gear case, open side up, to provide at least 3¼”
clearance between the case and the assembly bench.
6. Make certain the pinion and gear shaft keyways are free
of burrs and sharp edges to prevent damaging the lip seal
sealing surfaces. Take the pinion and gear assemblies,
mesh the gear teeth, and insert simultaneously into
the gear case half. Rotate the gear shaft slightly as it is
pushed through lip seal. Tap end of the pinion shaft and
gear shaft with hardwood block to seat the bearings in
counter bores.
7. Place gasket on the gear case. If the gasket is damaged,
discard it and use a new gasket.
8. Align the gear case cover with the ends of pinion and gear
shafts, and carefully push the cover into place. Rotate
the pinion shaft during assembly. Tap the cover with a
hardwood block to seat the bearings in the cover.
9. Install the seven capscrews and nuts and tighten securely,
alternating around gear case to prevent distortion.
10. Install the drain plug. Be sure the reducer is filled with the
proper lubricant. See “Lubrication” instructions, page 2.
FIGURE 8
“B” SIzE hELICAL GEAR REDUCER - ExPLODED VIEW
lip seals. Drive new lip seals with lip toward the inside of
the reducer, in place against the snap rings. Use a wood
block covering entire lip seal and drive evenly. Apply
lubricant to lip seal surfaces.