3-42. TIMER MAINTENANCE.
This task consists of
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Soft-Bristled Brush (Appendix B, Section III, Item 3)
Solvent, drycleaning (Appendix C, Section II, Item 28).
Tape, anti-seize (Appendix C, Section II, Item 30).
Rags, wiping (Appendix C, Section II, Items 23).
Timer removed (para. 2-78).
General Safety Instructions
Drycleaning solvent P-D-680 is highly toxic and can ignite organic materials, nitrates, carbides,
and chlorates Wear eye, skin, and respiratory protection. Use in a well-ventilated area.
Position backwash timer (3) on workbench.
Mark elbows, plugs and adapters as numbered on bottom of stager for ease in
Remove elbows (13), plugs (12) adapters (10) and inlet strainer (11) from bottom of stager (9).
Open cover and tag and disconnect six wires (15) from terminal board (16).
Tag and disconnect five wires (4) to terminal board (8).
Remove nut (5) and cable assembly (6) from backwash timer (3)
Remove four screws (14) and stager (9).
Remove two screws (7) and terminal board (8).
Remove twelve locknuts (2), screws (1) and remove latches (17)