Viking Pump TSM685.1: GS-HL 855 - Manual (Page 4)

GAUGE
PORT BOSS
MAINTENANCE (Cont.)
STORAGE:
If the pump and coupling are to be stored, drain the pump
and pour non-detergent SAE 30-weight oil into the pump port.
Apply grease to the pump or the coupling shaft extension, if
present or accessible.
Viking suggests rotating the pump shaft every 30 days to
circulate the oil in the pump. The coupling should be stored
in a dry area.
NOTE: If the liquid to be pumped reacts with oil, use an
acceptable alternate.
SUGGESTED REPAIR TOOLS:
The following tools are required to properly repair Series 855
pumps. These tools are in addition to standard mechanics’
tools such as open-end wrenches, pliers, screwdrivers, etc.
Most of the items can be obtained from an industrial supply
house.
1. Soft face hammer
2. Metric Allen wrenches (for set screws)
3. Torque Wrench with a locknut socket
4. External snap ring pliers - 2-810-029-375
5. Internal snap ring pliers - 2- 810-047-999
6. Arbor press
7. Brass bar
8. Hook style spanner wrench
SECTION TSM 685.1 ISSUE G PAGE 4 OF 16
PUMP DISASSEMBLY
1. To drain the liquid being pumped, remove the two (2)
drain plugs located in the bottom of the casing. Once the
liquid has drained replace the plugs.
2. Refer to Figures 4, 6 & 7 for names of parts.
3. Mark the head and casing before disassembly to insure
proper reassembly.
4. To inspect the head and pin assembly and idler and
bushing assembly, remove the head capscrews.
5. Remove the head from the pump. Do not allow the idler
to fall from the idler pin. Tilt the top of the pump head
back when removing to prevent this. Avoid damaging the
head shim set since all shims are required to maintain
end clearance.
6. Remove the idler and bushing assembly. If the idler
bushing needs to be replaced, see INSTALLATION Of
BUSHINGS, page 9. If further disassembly is required,
the pump must be separated from coupling. Refer
to DISASSEMBLY Of COUPLING, page 7, before
proceeding with Step 7.
WARNING!
Refer to DANGER & CAUTION listed on page 2
before proceeding.
ROTOR
HEAD
IDLER PIN
RELIEF VALVE
(shown with optional
RV coverplate)
HEAD
GASKET
SEAL
IDLER
CUTAWAY VIEW MAG DRIVE PUMP, MODEL HL855M MD2-B B ILLUSTRATED. (TYPICAL Of GG-HL SIzES)
INNER MAGNET
ASSEMBLY
OUTER
MAGNET
ASSEMBLY
BEARING
CARRIER
ASSEMBLY
(Optional)
CANISTER
TEMPERATURE
PROBE HOLE
CANISTER
O-RING
CASING
BUSHING
BRACKET
SHAFT
fIGURE 4
CASING