Open the pressure relief valve so the pressure on the remote throttle is 0 psi. This
should cause the throttle valve (needle block) to open fully and allow all fuel to return to
the fuel tank, thereby not allowing the impact hammer to start.
Simulate starting the impact hammer three times using the hammer trip assembly and
measure the time elapsed from trip disengage until the piston stops bouncing, bottoms
out, and rests fully on the impact block. View the lifting collar on the piston via slot in the
rear of the impact hammer above the trip safety lever. A chalk line can be used to note
the starting point of the lifting collar on the piston.
An impact hammer with adequate compression should take between 15 to 20 seconds
to bottom out. A time of less than ten seconds indicates low compression.
Spare Parts, Special Tools and Equipment
Spare parts, special tools and equipment are initially provided with the Pile Driver System and are
located in the two tool boxes stored in the shipping/storage container. Table K-6 below lists the
maintenance-related spare parts, special tools and equipment provided.
Table K-6 is a list of the maintenance-related Spare Parts, Special Tools
and Equipment and is not a comprehensive list of all components
delivered with the system.
Table K-6. Spare Parts, Special Tools, and Equipment
Check valve extractor tool fuel and oil pump
Piston ring pliers
Grease gun with flex hose and coupler
Coupler for grease gun
Rigging and Safety Equipment
Piston lifting eyebolt
Seal Kits and Filters
Fuel pump seal kit
Throttle valve (needle block) seal kit
Oil pump seal kit
Fuel filter element for the Fuel Filter Assembly
In-line fuel filters
Fuel or oil tank suction strainer elements
14-oz. (400g) tube of MIL-G-10924 grease
1-quart (1 l) of MIL-L-2105 oil
1/3-oz. (10 ml) of LoctiteŽ 272
Refer to the Components of End Item Table H-7 in Appendix H of the Operator's Manual,
TM-3810-307-10 for a complete listing of the spare parts provided in the tool boxes.