TM 10-4320-303-13
5.6.2 Gear Box Maintenance.
This task covers:
5.6.2.1 Disassembly
5.6.2.3 Repair
5.6.2.2 Inspection
5.6.2.4 Assembly
INITIAL SETUP
Tools
Equipment Conditions
Tool Kit, General Mechanic's,
125 GPM pumping assembly shutdown, refer to
Automotive, Section III, Item 1,
applicable technical manual.
Appendix B
Water Meter and Gear Box Assembly removed,
Materials/Parts
paragraph 4.13.5.
Gasket (TM 10-4320-303-23P)
Pilot Valve Assembly removed, paragraph
Cotter Pin (TM 10-4320-303-23P)
5.6.1.
General Safety Instructions
Do not work on equipment without following
standard shop safety precautions.
5.6.2.1 Disassembly.
a. Remove two cap screws (Figure 5-4, 1).
b. Remove valve cap (2) from gear box cover (3).
c. Remove register mechanism subassembly (4) and gasket (5).
d. Loosen socket-head screw (6) and remove register gear (7) from main drive shaft (8).
e. Remove four screws (9).
f. Gently pry around edge of gear box cover (3) and remove gear box cover (3) from gear box (10).
g. Remove gasket (11). Discard gasket (11).
h. Remove crank arm pin (12). Turn crank arm assembly (13) away from spring lock sleeve (14).
i. Remove crank arm assembly (13) from crank (15).
j. Remove crank (15) and gear assembly (16).
k. Remove cotter pin (17). Discard cotter pin (17).
l. Remove drive bushing and gear assembly (18) from main drive shaft (8).
m. Remove spring link coupling (19) from spring link cap (20).
n. Remove spring link cap (20), lock washer (21), spring collar screw (22), spring (23), and flat washer
(24).
o. Remove spring screw (25) from spring link lock nut (26).
p. Remove spring link lock nut (26) from spring lock sleeve (14).
q. Loosen four socket-head screws (27).
5-14
