Figure 4-22A. Foam Pulse Pump
4-8.3 Water Injection Drive Motor. (Figure 4-22B)
4-8.3.1 Removal, Disassembly and Inspection.
a.
Before disconnecting hydraulic hoses, thoroughly clean off all outside dirt around fittings. Disconnect hoses and
immediately plug ports to prevent foreign matter from entering motor.
b.
Remove screws (1), and lockwashers (2), then remove the outer guard half (3).
c.
Loosen nuts (4) and move injection pump (5) back to loosen belt tension. Remove belt (6) and pulley (7).
d.
Remove screws (8) and lockwashers (9) to remove motor (10) and inner guard half (11).
e.
Remove the key (12) from motor shaft, then clamp motor in a vise, clamping down firmly on the housing (28)
mounting flange with shaft (25) pointed down.
f.
Remove screws (1 3). Inspect screws for damaged threads, or the sealing ring under screw head. Replace
damaged screws.
g.
Remove end cover (14) and seal ring (15). Discard seal ring (15). Thoroughly wash cover in proper solvent and
blow dry. Inspect end cover for severe wear, nicks, burrs and spalling, and the screw head recesses for good
sealing surfaces. Replace cover as necessary.
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