TM 10-4610-241-24
TO 40W4-13-42
3-41. HOUSING AND DRIVE ASSEMBLY (CHEMICAL FEED PUMP) REPAIR -
continued.
e.
Assembly.
(1)
Install sight glass (3) in housing (29).
(2)
Install two plugs (1 and 2) in housing (29).
(3)
Install needle bearing (11) in housing (29).
(4)
Position thrust bearing race (10), thrust bearing (9) and thrust bearing race (8) in housing (29).
(5)
Press worm gear (7) onto shaft (12) and install pin (6).
(6)
Position shaft (12) and worm gear (7) in housing (29). Turn to seat it.
(7)
Install roller bearing (5) and cup (4) on shaft (12).
(8)
Slide worm gear (27) onto shaft (28) and install pin (26). Gear teeth must be positioned in center of shaft.
(9)
Slide cams (24 and 25) onto shaft (28) and install pins (23), making sure high points of cams face in opposite
directions (180 degrees) as illustrated in cam positions diagram.
(10) Place shaft (28) and attached parts in housing (29).
(11) Slide pillow block (18) onto end of shaft (28). Do not tighten setscrews (17) at this time.
(12) Slide pillow block (22) onto other end of shaft (28). Do not tighten setscrews (21) at this time.
NOTE
Make sure outer cams (20 and 16) are 90 degrees out of phase with
inner cams (24 and 25) when installed.
(13) Slide cam (20) onto end of shaft (28), but do not tighten setscrews (19).
(14) Slide cam (16) onto end of shaft (28), but do not tighten setscrews (15).
(15) Position pillow blocks (18 and 22) against back of housing (29), making sure gears (7 and 27) are meshed.
(16) Install lockwashers (14) and screws (13) in rear holes of pillow blocks (18 and 22).
(17) Install stroke adjustment assemblies (Paragraph 3-40).
3-230
