2
MINI GAUGE G27
MAINTENANCE
Before undertaking any maintenance work on gauge, ensure discharge of gauge or tank content will not
create a hazard to personnel. Particular attention being given to hazardous fluids, system temperature and
pressure.
TO REPLACE SIGHT TUBE, CLEAN GAUGE OR REPLACE SEALS
1. Drain
tank.
2. Unscrew top and bottom nipples (9) remove gauge assembly from tank.
3. Remove nipples from collar (8).
4. Check and renew seals (10) if required.
5. Unscrew top gland nut (4) from gauge collar (8)
6. Remove top gauge collar (8) from tubes by pulling.
7. Remove guard tube (2) by sliding off sight tube.
8. Unscrew lower gland nut (4) from lower gauge collar (8).
9. Remove sight tube (1).
10. Clean or renew sight tube, inspect all bushes and seals (5, 6 & 7) renew if required.
11. Check internal passages of collar and nipples are clear of obstructions.
12. Refit lower gland nut, bushes and seals to sight tube.
13. Screw lower gland nut to lower collar.
14. Refit guard tube.
15. Refit upper gland nut, bushes and seals to sight tube.
16. Screw upper gland nut to upper collar.
17. Gauge is now ready for refitting to tank.