17
AP Dynamometer Service Manual
9.
Install the maximum pointer assembly, bezel, and serial plate cover on
the dynamometer. Check the maximum hand adjustment. The maxi-
mum hand turned counter clockwise must not move the dynamometer
pointer more than one division before the clutch mechanism slips.
Readjust the clutch mechanism as required.
10.
Apply five point calibration with the pointer and division mark aligned at
each reading.
11.
Remove the dynamometer and shackles from the calibration standard
machine.
12.
Verify the calibration data satisfy the dynamometer accuracy specifica-
tion. Enter the dynamometer serial number, the verified accuracy
tolerance percentage, sign, and date the certificate of calibration card.
There are four different main pointers for the AP Dynamometers (black). To
determine which pointer you need, you must know where the zero is located
on the dial. See illustration below.
12:00 = PN 30246-0019
3:00 = PN 30246-0027
6:00 = PN 30246-0035
9:00 = PN 30246-0043
Standard 5” (127 mm)
Dynamometer
There are four different main
pointers for the AP Dynamometers
(black). To determine which pointer
you need, you must know where the
zero is located on the dial. See
illustration below.
12:00 = PN 30079-0011
3:00 = PN 30079-0029
6:00 = PN 30079-0037
9:00 = PN 30079-0045
Standard 10” (254 mm)
Dynamometer
All capacities through 20,000
lb, 10000 kg, & 100K newtons
All capacities through 20,000
lb, 10000 kg, & 100K newtons
30,000 through 100,000 lb,
use PN 30079-0029
Figure 1
5" dials
Figure 2
10" dials
