Viking Pump TSM142.2: LS-M 225/4225 - Manual (Page 13)

SECTION TSM 142.2 ISSUE E PAGE 13 OF 14
DaNgER !
Before opening any Viking pump liquid
chamber (pumping chamber, reservoir,
relief valve adjusting cap fitting, etc.)
Be sure:
1. That any pressure in the chamber has
been completely vented through the
suction or discharge lines or other
appropriate openings or connections.
2. That the driving means (motor,
turbine, engine, etc.) has been “locked
out” or made non-operational so that
it cannot be started while work is
being done on pump.
3. That you know what liquid the
pump has been handling and the
precautions necessary to safely
handle the liquid. Obtain a material
safety data sheet (MSDS) for the
liquid to be sure these precautions
are understood.
Failure to follow above listed
precautionary measures may result in
serious injury or death.
NOTE: Mark valve and head before disassembly to insure
proper reassembly.
1. Remove valve cap.
2. Measure and record the length of extension of the
adjusting screw. Refer to “a” on Figures 12 and 13.
3. Loosen the locknut and back out adjusting screw until
spring pressure is released.
4. Remove bonnet, spring guide, spring and poppet from
valve body. Clean and inspect all parts for wear or
damage and replace as necessary.
SaFETY RElIEF ValVE
INSTRUCTIONS
lIST OF PaRTS
1. Valve Cap 6. Valve Body
2. Adjusting Screw 7. Valve Spring
3. Lock Nut 8. Poppet
4. Spring Guide 9. Cap Gasket
5. Bonnet 10. Bonnet Gasket
DISaSSEMBlY
FIgURE 12
ValVE - lS, Q, QS aND M SIzES
FIgURE 13
JaCKETED ValVE - lS, Q, QS aND M SIzES