Viking Pump TSM343.1: Vi-Corr Mag Drive - Manual (Page 9)

TSM 343.1 ISSUE D PAGE 9 OF 13
7. If pump has relief valve, reassemble relief valve, setting
the adjusting screw while tightening the locknut. Recheck
dimension, install second gasket on other side of locknut
and install acorn nut.
8. Install the drive key into the drive cast key set.
RP-807 SERIES PUMP
DISASSEMBLY
1. Remove key from driver shaft.
2. Remove the 4 assembly capscrews. Pump is now held
together by alignment sleeves.
3. Hold the head of the pump and gently tap on the sides of
the pump bracket with a soft hammer, alternating sides of
the pump. This should separate the sections. do not hit
the sections hard or use a screwdriver to pry them apart
as this may damage the mating surfaces.
NOTE: If pump has two casing and gear sets (RP-80724
and RP-80732), keep individual casing and gear together.
4. After pump is apart, inspect all parts for signs of wear.
Look carefully at the shaft, bushings, inside of casing,
gear teeth, lip seal, spacer plate, and inside face of
casing for signs of wear.
5. If replacing shafts, remove retaining rings from both sides
of gear. Press gear off shaft and remove drive pin(s) or
balls from shaft.
6. Visually inspect the pump O-ring. If O-rings are Teflon ®
(appear to be white ), it is strongly recommended to
replace rather than reuse. Do not remove bracket O-ring
unless planning to replace, especially if it is an
encapsulated O-ring.
7. If pump has relief valve, remove the acorn nut covering
the relief valve adjusting screw. Measure the distance of
the relief valve adjusting screw to pump surface and
record this length. Finish disassembling relief valve and
inspect the seat in the casing and the poppet for signs of
wear or foreign matter on either surface.
RP-807 SERIES PUMP ASSEMBLY
• The pump is ready to be reassembled after all parts
have been changed and worn parts replaced.
• Use a suitable lubricant compatible with the fluid being
handled when reassembling the pump.
• Make sure all holes machined in the bracket are clean
and that the mating surfaces of each section are free of
any dents or burrs.
1. Install the bracket O-ring. If it is encapsulated (purple or
orange appearance) then follow the special instructions
below.
Do not attempt to reuse this type of O-ring if it has been
removed. Immerse a new O-ring in boiling water for a few
minutes. Remove from water and stretch out in hands a
little larger so it will fit onto the bracket hub, without
forcing over a sharp edge. When in place, run hot water
over O-ring until it shrinks down tight into the hub O-ring
groove. Dry area with compressed air.
2. Place bracket mounting face down on blocks to allow
stable assembly of pump. Place O-ring into O-ring
groove. Install alignment sleeves in proper holes by
tapping with soft hammer.
3. Slide the separation plate (pumps used with MD-A2 or
MD- A8 couplings do not have separation plate) onto the
alignment sleeve with O-ring groove up and the side
notch positioned on the inlet side of pump. Place O-ring
into O-ring groove.
RP-80724 and RP-80732 only. Lubricate bushings in
separation plate or bracket with oil or compatible liquid.
Driven gears should be attached to drive with drive pin
or pins and snap rings. Install driver and driven shafts
and gears into their proper positions. See Figure 12 and
Figure 13 for proper positioning of driver and driven shaft
assemblies. Slide the casing onto the alignment pins
with O-ring groove up and lubricate gears. Place O-ring
in O-ring groove.
NOTE: Gears and casing are matched sets and must be
assembled in pump together.
4. Slide the separation plate with ports onto the alignment
sleeves with O-ring groove up. The pump will require
more than one pair of alignment sleeves; install
alignment sleeves as necessary. Lubricate bushings in
separation plate with ports with oil or compatible liquid.
Install O-ring with O-ring groove.
5. Place drive pin or pins in groove on driver shaft and slide
gear onto shaft over pins. Install driven shaft and gears
into remaining bushing bore. Driven gear should be
attached to shaft with drive pin or pins and snap rings.
Slide the casing onto the alignment pins with O-ring
groove up and lubricate gears. Place O-ring in O-ring
groove.
6. Lubricate bushings in head. Slide head onto alignment
sleeves with relief valve on inlet side of pump. If pump is
not equipped with relief valve, assemble head with side
flat on inlet side.
7. Install the 4 capscrews and tighten with torque wrench to
25 ft-lbs.
8. Reassemble relief valve, setting the adjusting screw to
previous dimension. Place gasket onto adjusting screw
holding the adjusting screw while tightening the lockout.
Recheck dimension, install gasket on other side of
locknut and install acorn nut.
9. Install the drive key into drive shaft key set.
ASSEMBLY Of MD-A2, MD-A8, MD-
B15, or MD-B40 COUPLINGS
DANGER
FOLLOW THESE DIRECTIONS EXACTLY TO
AVOID INJURY TO SELF OR DAMAGE TO PUMP
UNIT. BE CAREFUL TO KEEP INNER AND OUTER
MAGNETS AT LEAST ONE FOOT APART UNTIL
STEP 4 DO NOT ENGAGE MAGNETS IN ANY
OTHER FASHION.
PAGE 9 Of 13 ISSUE C SECTION TSM 343.1