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 TM 5-1940-277-20
TM 1940-20/2
Using screwdriver loosen hose clamps (1) at 90 elbow pipes of MK1 or straight pipe (3.1) of MK2.
3.
Twist hoses slightly to break seal and remove by pulling from pipes (2 and 3 or 3.1).
4.
Using pipe wrench remove two 90 elbows (3) on MK1 or straight pipe (3.1) on MK2.
5.
Using pipe wrench remove 90 elbow (2).
6.
7.
Using box wrench remove two butts (4) and washers (5).
Using 11/16 inch wrench loosen nut (6) and disconnect drain down tubing (7) on MK1.
8.
Hold pump and use 9/16 inch socket and 6 inch extension and ratchet to remove nut (8) and washer (9).
9.
10.
Remove pump (10) and gasket (11). Discard gasket (11).
REPLACE:
1.
Using putty knife clean old gasket material from engine housing.
Coat new gasket (11) with sealing compound (Item 18, App. C) on both sides and mount an stud in engine housing.
2.
Aline other two holes.
Mount pump (10) on engine.
3.
Install two washers (5) and bolts (4) and tighten bolts using box wrench.
4.
Install washer (9) and nut (8) and tighten nut using 9/16 inch socket and 6 inch extension and ratchet.
5.
On MK1 install drain down tubing (7) and tighten nut (6) using 1 1/16 inch wrench.
6.
7.
Wrap threaded pips (2 and 3 or 3.1) with pipe taps (Item 2, App. C).
On MK1 install two 90 elbows (3) on pump (10) and tighten using pips wrench. On MK2 install straight pips (3.1)
8.
on pump (10) and tighten using pipe wrench.
Install 90 elbow (2) on pump (10) and tighten using pips wrench.
9.
Install rubber hoses on elbow (2) and tighten hose clamp (1) using screwdriver.
10.
11.
Install rubber hose on elbow (3) or straight pipe (3.1) and tighten hose clamp (1) using screwdriver.
Replace buoyancy material if removed from starboard side (refer to paragraph 3-152).
12.
Close engine hatches.
13.
3-176
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