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THIRD CLUTCH AND CENTER SUPPORT HOUSING - Continued
THIRD CLUTCH AND CENTER SUPPORT HOUSING - Continued

Maintenance Manual for Firefighting Truck, 100 Ft Aerial Ladder, 1000 GPM Page Navigation
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TM 5-4210-233-14&P-2
6-60. THIRD CLUTCH AND CENTER SUPPORT HOUSING - Continued
(8)
Place back plate (8) on flat surface
of press.
(9)
Stack eight clutch plates (9 and 10)
on back plate (8), starting with
friction plate (9) and alternating
with steel plate (10).
(10)
Place third clutch piston (4) on top of
clutch plates (9 and 10).
(11)
Press evenly on third clutch piston
(4) with 100 psi (689.5 kPa).
(12)
Measure distance from base of
clutch pack (11) to thrust pad (12).
(13)
Clutch pack thickness must be 3.010
to 3.042 in. (76.45 to 77.26 mm).
Replace clutch plates (9
and 1 0) as needed to ensure proper clutch pack thickness.
(14)
Measure thickness of one tang (13)
on each of four steel plates (1 0).
(a) If steel plate measures 0.1 16 to
0.123 in. (2.95 to 3.12 mm) steel
plate is thick.
(b) If steel plate measures 0.099 to
0.106 in. (2.51 to 2.69 mm) steel
plate is thin.
(15)
Repeat steps (8) through (13) to
recheck clutch pack thickness.
(16)
Remove clutch pack (11) from press.
(17)
Apply lubricating oil (Item 10,
Appendix E) to new inner seal ring
(14) and new outer seal ring (15).
(18)
Install new inner seal ring (14) and
new outer seal ring (15) on third
clutch piston (4) with lips facing
down.
6-353


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