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10B.9 Self-locking Nut (Chart 10 item B9)
10B.9.1 Check the Self-Locking Nut threads for galled or missing threads. If there are galled or missing threads, replace the
Self-Locking Nut.
10B.9.2 Check the Self-Locking Nut to make sure it will lock on the threads of the Socket Head Cap Screw. If the Self-
Locking Nut is not locking on the threads of the Socket Head Cap screw, replace the Self-Locking Nut.
10C Fine Adjustment (Chart 11)
10C.1 Crank Housing (Chart 11 item C1)
10C.1.1 Check the Crank Housing with some means of non-destructive testing to determine if there are any cracks. If
cracks are found, replace the Crank Housing.
10C.1.2 Check the Crank Housing for any deformation. If deformation is noted, check the Crank Housing with some means
of non-destructive testing to determine if there are any cracks. If any crack is noted, the Crank Housing should be
replaced.
Warning: Mathey Dearman Inc. will not warranty of accept any responsibility for heating, welding or straightening
of the Crank Housing.
10C.2 Piston (Chart 11 item C-2)
10C.2.1 Check the Piston (with a straight edge) for straightness. If the Piston is bent, it should be replaced immediately.
Warning: Mathey Dearman Inc. will not warranty of accept any responsibility for heating, welding or straightening
of the Piston.
10C.2.2 Check the threaded hole in the Piston for galled or missing threads. If the threads are galled or missing replace the
Piston.
10C.2.3 Check the hole in the Piston at the point where the Chain (E) attaches for elongation. If the hole in the Piston is
elongated, the Piston should be replaced.
10C.2.4 Screw the appropriate Thread Gauge (item “C”, “D” or “D” of equipment required list) into the threaded hole of
the Piston into which the Threaded Stud (C-4) threads. The Thread Gauge when screwed into the Piston should
not exceed .010 of an inch of play when moved in any direction.
10C.3 Crank Handle (Chart 11 item C3)
Check the Crank Handle for cracks especially in the area where the threaded shaft (Chart 11 item C-4) is welded to
the Crank Housing. If the cracks are found in the area of the Crank Handle, replace the Fine Adjustment (Chart 11).
Warning: Mathey Dearman Inc. will not warranty or accept any responsibility for any heating, straightening or
welding of the Crank Handle.
10C.4 Threaded Stud (Chart 11 item C4)
10C.4.1 Check the threads of the Threaded Stud for galled or missing threads. If the Threaded Stud is found to be galled or
has missing threads, replace the Fine Adjustment (Chart 11).
10C.4.2
Check
the Threaded Stud to see if it is bent. A bent Threaded Stud can make it difficult to turn the Crank Handle
(Chart 11 item C4) to move the piston inward and outward in the Crank Housing (Chart 11 item C1).If the Threaded
Stud is bent and it is difficult to turn the Crank Handle (Chart 11 item C4), replace the Fine Adjustment (Chart 11).
WARNING:
The use of defective Piston in the Fine Adjustment (Chart 11) can cause a
failure of the Chain Clamp injuring the operator and by standers.
