Graco A Series Instructions-Parts List Manual page 29

19. Install the connecting rod (29).
2 0 .
Screw the displacement pump
a b o u t
3/4 o f
t h
way into the drive housing (18). Hold the pin
( P I
up
to the pin hole in the connecting rod assembly (29)
and continue screwing in the pump until the pin
the top threads of the pump cylinder are flush with
slides easly into the hole. Back off the pump until
the face of the drive housing and the outlet nipple
(46)
is facing beck. Push the retaining spring
(351
in-
to the groove all the way around
the
connecting
rod. Tighten the jam nut
(381
to 7586ft-lb 1102-115
Nml-very tight to prevent it from loosening which
will damage the drive housing.
See
Fig 24.
WARNING
Be sure the retaining spring
(351
is firmly
in
the
groove of the connecting r o d , a// the w a y around,
to prevent the pin
(201
from working l o o s e due to
vibration. See Fig 24.
If the pin works loose, it or other
parts
could break
off due to the force of the pumping action. These
parts could be projected through the air and reault
in serious bodily injury or propety damage, in-
cluding damage t o the pump, connecting rod or
drive housing.
@
24
21. Reinstall the front cover and screw (31,
321.
Reconnect the suction tube (421 and pump outlet
hose (471.