MAINTENANCE OF LOWER MAIN CASE/MEASURING CHAMBER
This task covers:
Tool Kit, General Mechanics
Upper main case assembly removed (para. 5.7).
(Item 1, App. B)
Disassemble lower main housing
Remove gasket (1, Figure 5-12) and
screen (2) from lower housing (3).
Using a small screwdriver or similar
device depress retaining spring (5)
and lift measuring chamber (4) from
Remove port gasket (6).
Disassemble measuring chamber.
Separate the two halves of (1 and 2,
Figure 5-13) the measuring chamber.
Remove disc (3) and thrust insert (4).
Remove thrust roller (5).
Clean all components as needed by flushing
with clear water. Pay particular attention to
debris or sediment which may collect in
Check screen for clogging or damage
to screen. If damaged, replace.
Figure 5-12. Lower Main Housing Assembly
Figure 5-13. Measuring Chamber