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Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)Table 2-1. Unit Preventive Maintenance Checks and Services (cont)
TM-5-1940-277-20 Boat Bridge Erection Twin Jet Aluminum Hull MODEL USCSBMK1 (1940-01-105-5728) MODEL USCSBMK2 (1940-01-218-9165) Manual
Table 2-1. Unit Preventive Maintenance Checks and Services (cont)
 
TM 5-1940-277-20
TM 1940-20/2
Table 2-1. Unit Preventive Maintenance Checks and Services (cont)
W-Weekly
Q-Quarterly
S-Semiannually
Item to be inspected
Interval
Procedure: Check for and have repaired, filed,
Item
or adjusted as needed
No.
S Item
Perform all operator PMCS first
WQ
2
RAW WATER PUMPS.
NOTE
Perform steps a and b for MK1 or MK2 with Sabre engines.
Perform steps c through f for MK2 with Cummins engines.
MK1 OR MK2 WITH SABRE ENGINE
NOTE
If there are pieces of rubber missing from impeller they will
have to be removed from the inlet end cover and tube stack
of the header tank heat exchanger.
a.
Pump impellers. Open and secure engine hatches. Remove draindown
tubing (1), six screws (2), cover (3), cover gasket (4), and rubber button (5).
Use two screwdrivers (6) and remove impeller. Check impeller (7) for wear,
signs of overheating, and deterioration. Bend vanes back and check for
cracked or broken vanes.
CAUTION
Self-priming ability of pump is reduced by the amount of
wear in pump parts. If pump is run dry more than 30
seconds it could overheat and bum the impeller.
b.
Pump housing. Check cover (3) and the cam and wear plate inside housing (8)
for indications of overheating and wear. Lubricate impeller (7), with liquid
soap, rotate it in the direction of rotation, and push it on the shaft and into
the housing. install rubber button (3). Apply sealant to cover gasket (4).
Install gasket, cover, screws (2), and drain-down tubing (1).
2-4
Change 2

 


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