Lesson 2/Learning Event 1
LEARNING EVENT 1:
DESCRIBE OPERATOR CHECKS AND
SERVICES REQUIRED FOR THE PUMP UNIT
The
most
important aspect
of
operators
maintenance is
preventive
maintenance. Preventive maintenance is the systematic care, servicing, and
inspection of equipment to prevent the occurrence of trouble, reduce
downtime, and assure the equipment is serviceable.
As with any piece of
military equipment the operator is the key to the prevention of trouble. To
insure this, operator maintenance is performed on a daily basis.
Operation Services on the Pump Unit
The operator inspects, records, and reports all deficiencies that are not
correctable at the operator preventive maintenance level to organizational
preventive maintenance using DA Form 2404.
There are three phases of
operator maintenance for the M12A1 PDDA. These phases are before-, during-,
and after-operation services. In this learning event we will discuss which
components of the pump unit are serviced during each phase of operator
maintenance.
Before-operation Services.
Use the
following steps
to
perform before-
operation services on the pump unit.
Step 1. Insure that appropriate Technical Manuals (TMs), Lubrication Orders
(LOs), and Modification Work Orders (MWOs) that apply are present. In the
canvas pouch on the pump-unit cover panel.
Step 2.
Remove the quick-release panels from the pump unit, inspect for
loose, missing, or obviously damaged hardware.
Where necessary, tighten
hardware and connections.
See that the wiring or other objects do not
obstruct moving parts. See that parts in the pump-unit assembly have been
properly lubricated.
Step 3.
Check the battery for obvious defects and damages.
Insure the
cables are properly attached. Inspect the water level in the battery cells
and add distilled water if needed. Clean the battery terminals if corroded.
A cut-away view of the battery is shown in figure 7 on page 21.
Step 4.
Check the pump and generator drive belts for wear, breaks, or
fraying.
Using the V-belt tensiometer, check for proper tension (five to
seven pounds) at 3/8-inch deflection. Adjust if necessary.
Step 5. Inspect the fuel filter beneath the fuel tank for dirt, water, or
sediment. Check that the finger nut on the sediment bowl is open. Check
that the fuel tank has sufficient gasoline. Check for leaks.
20
Previous Page
