| Tweet |
Custom Search
|
|
|
||
 TM 55-1925-204-12
(a) To assemble, reverse the procedure
(d) You can now move the shaft out as
used in steps (2), (c) through (h) above, then close the
far as required by pulling out on the crank handle.
draincock (fig. 4-10).
(e) To remove a pumping unit, pull shaft
(b)
Tighten all capscrews, nuts, and
out until end is clear of the unit to be removed; unscrew
screws securely, but not too tight.
connector to which the oil line was attached, then remove
(c) After the eccentric shaft has been
the capscrew from below the connector (both on rear
outside of housing) and lift unit out of housing.
positioned through all eccentrics (17, fig. 4-12) and
bearings, tighten locknuts securely, install packing, then
CAUTION
tighten all packing glands hand tight.
Remove one pumping unit at a time. If
(5) Installation.
more than one is removed, be sure they
(a) Position lubricator (without cover
are tagged to identify exactly where
installed) on the camshaft housing, and secure with
each one is from.
They must be
lockwashers and capscrews (fig. 4-10).
returned to their original position in the
(b) Reconnect the lubricator drive link (4,
housing.
(f) Remove locknut at each end of
(c) Remove tags and protective covers
reservoir then remove drive shaft bearings (5 and 26),
from oil lines, one at a time, and connect them to their
packing gland(4) and retainer (24).
proper pumping unit.
(g) Remove bearing (21) from partition of
NOTE
housing by removing ring (22) then remove packing (23).
When installing cover, it is necessary
(h) Remove two roundhead screws from
that the slots in the adjusting screws be
housing, then lift out pawl retainer (9) and spring (10).
positioned to align with the flats on the
(3) Cleaning, Inspection and Repair.
adjusting spindles.
CAUTION
(d) Position cover gasket (fig. 4-10) on
Do not wipe lubricator with lint rags or
the lubricator housing. Position cover over the housing,
waste. It should be flushed with clean
with rear edge high enough so that spindle flats and slots
fuel oil, then blown dry with ships
in bottom of adjusting screws can be seen and aligned,
service air.
then move adjusting screw slots to the proper position.
(a) Flush the lubricator housing with
Lower the cover into position. Do not drive or force the
clean fuel oil then blow dry with ships service air. Wash
cover in place.
the three sight feed glass hoods with clean fuel oil and
(e) Install cover screws and tighten. If
wipe dry.
glass hoods were removed for cleaning, position them on
(b) Wash the pumping units in clean fuel
the cover correctly, then secure with the clamps and
oil and wipe dry. Inspect the by-pass opening in pumping
screws.
unit (19, fig. 4-12). If plugged, use a wire to clean the
(f) Assure that draincock is closed, then
opening, then blow out with ships service air. Inspect the
remove oil filler cover and fill with clean oil (LO 55-1925-
pumping unit (19) body for cracks, dents, or other
204-12-2). Be sure filter screen is in place in filler neck,
damage. Replace a defective pumping unit. Wash the
and is clean.
strainer (20) in clean fuel oil and blow dry.
(g) Prime the lubricator by disconnecting
(c) Wash the drive shaft in clean fuel oil
the longest oil line at its engine connector, then turn the
and wipe dry.
hand crank until oil flows from that oil line. Reconnect the
(d) Position bearings on drive shaft. If
oil line at the engine connector. Check for leaks at
the fit of bearing to shaft is loose, replace the bearings.
connections or the bearing packing glands. Check that
packing is seated, and gland nuts are hand tight. If
fuel oil and blow dry. Inspect teeth. Replace a damaged
leaking at the gland, tighten just enough to stop the leak.
ratchet wheel.
(h) The lubricator is now ready for
(f) Wash the pawl (2) arm assembly in
adjustment.
clean fuel oil and blow dry. Inspect the plunger spring (3).
(6) Adjustment.
Replace defective spring.
(a) With engine running at rated speed,
(g) Inspect the retainer pawl (9) and
count the number of impulses (indicated by one revolution
spring (10). Replace a broken spring.
of the crank handle) per minute; this can be done most
(4) Reassembly.
accurately with a stop watch, as the impulses for a period
NOTE
of five minutes are counted and divided by five. The
Install the pumping units, one at a time,
particular feeds should deliver the number of drops per
in the same position from which
minute indicated on table 4-4
removed.
4-23
|
||
|
||
