TM 5-3800-205-23-3
WATER PUMP MAINTENANCE - CONTINUED
0038 00
ASSEMBLY - CONTINUED
7
3
9
390-1575
14.
Using a feeler gage, measure gap between fin of impeller (15) and diffuser (7). Measurement should be 0.005-0.010 in.
(0.13-0.25 mm).
a.
If measurement is within specification, go to step 18.
b.
If measurement is not within specification, continue with step 15.
7
15
15.
Remove diffuser (7), castle nut (11), washer (12), spacer (13), and impeller (15).
16.
Add or remove shims (18) as required.
17.
Install impeller (15), spacer (13), washer (12), and castle nut (11). Install diffuser (7) on adapter (3), then repeat step 14
to recheck clearance.
18.
Remove diffuser (7), then tighten castle nut (11) to 93 lb-ft (126 Nm).
19.
Tighten castle nut (11) until keyway in nut aligns with hole in shaft (21). Install new cotter pin (10).
0038 00-7
