TM 5-3810-307-24-1-2
Hammer Trip System Hammer Trip Assembly. (Refer to Figures K-31 and K-32.)
The hammer trip assembly is normally removed to inspect or to remove the hammer trip track rails.
The hammer trip assembly is normally disassembled for replacement of components.
Removal.
a.
If removed, install the trip transport bolt (1, Figure K-31), and position the hammer trip
assembly (2) in between the fuel tank and the upper cylinder to lower cylinder mounting
flange.
b.
Support the hammer trip assembly (2) with a jack.
c.
Remove the two trip gib bolts (3) from the upper trip gib (4) on the left-hand side of the
impact hammer. Remove the upper trip gib (4).
d.
Remove the two trip gib bolts (3) from the lower trip gib (4) on the left-hand side of the
impact hammer. Remove the lower trip gib (4).
e.
Push the hammer trip assembly (2) slightly towards the right-hand side of the impact
hammer, allowing the other two trip gibs (4) to clear the hammer trip track rail on the
right-hand side of the impact hammer. Remove the hammer trip assembly (2) from the
hammer trip track rails.
f.
Remove the trip transport bolt (1) from the hammer trip assembly (2).
Disassembly.
a.
Remove the four leaf spring bolts (1, Figure K-32) securing the leaf spring (2) to the
hammer trip housing and backplate (3).
b.
Move the cam (4) and drive out the roll pins (cam to shaft) (5) securing the lever and
shaft (6) to the cam (4). Discard the roll pins (cam to shaft) (5).
c.
Drive out the lever and shaft (6) from the cam (4).
d.
Move the lifting pawl (7) and drive out the roll pins (8) securing the lifting pawl (7) to the
stop pin (9). Discard the roll pins (8).
e.
Drive out the stop pin (9) from the lifting pawl (7).
f.
Remove the two link pins (10) securing the two connecting links (11) to the cam (4) and
the lifting pawl (7). Retain the link pins (10).
g.
Drive out the roll pins (12) securing the stop pin (13) to the hammer trip housing and
backplate (3). Discard the roll pins (12).
h.
Remove the two lower bumper mounting bolts (14) securing each lower bumper (15) to
the hammer trip housing and backplate (3). Remove the two lower bumpers (15).
i.
Remove the two trip gib bolts (16) securing the each trip gib (17) to the hammer trip
housing and backplate (3). Remove the trip gibs (17).
K-72 Change-1
