12-9.3.2 Operating the air impact wrench
Turn torque regulator on front of handle to low power position by rotating knurled knob fully clockwise as you look
down on the tool from above.
Place tool on bolt or nut to be worked and squeeze trigger. Slowly rotate knurled knob counterclockwise until
desired power is being applied. If disassembling rusty or other hard to remove bolts/nuts, turn knob fully
counterclockwise. If nut/bolt does not start to move in three to five seconds, try other means of removing it.
If wrench appears to be losing power, follow troubleshooting procedures in TM 55-1930-209-14&P-7.
12-9.4 Operating compressed air station 6 to power the PIG
Shore discharge hose must remain free of oil and dirt Use only designated
25-foot air hose on compressed air station 6 for supplying compressed air
to power PIG through shore discharge hose.
Hold a dry, clean white cloth in front of air station 6 air outlet and open air valve by turning valve
counterclockwise. Blow compressed air through cloth. Smell air coming out of air valve. If air smells oily or
specks of dirt or oil and grease show on white cloth, check oil level in air compressor. If overfilled, drain to
authorized level. Change air filter 2 by following procedures in TM 55-1930-209-14&P-7 and again check air
quality with white cloth. Continue to troubleshoot and change air filter 2 until air from air station 6 is free of oil
smell and stain.
Close shore discharge valves SD1 and SD2 by turning clockwise until tight.
On PIG launcher insertion point, unlock two quick disconnect couplers and pull cap off insertion tube (Figure 12-
9). Insert clean PIG into tube, replace cap, and lock two quick disconnect couplers.
Connect designated 25-foot air hose to compressed air station 6 quick disconnect coupling and to compressed air
fitting on PIG insertion point cap (Figure 12-9).
Make sure PIG receiver has been installed on shore end of shore discharge hose and is ready to receive PIG.
Open shore discharge valve SD2 by turning counterclockwise until it stops.
Notify all crewmembers not to use any other compressed air stations until PIG has pushed all water out of shore
Open compressed air station 6 air valve by turning valve counterclockwise until it stops.
PIG normally takes about 15 to 20 minutes to push water out of shore
When PIG arrives in PIG receiver onshore, close compressed air station 6 air valve by turning clockwise until it
Close valve SD2 by turning clockwise until tight.
Disconnect air hose and return to storage.