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TM 10-4320-311-14
CHAPTER 4
UNIT MAINTENANCE INSTRUCTIONS
INDEX
Page
Section I
Unit repair parts, special tools, test, measurement and diagnostic equipment
(TMDE), and support equipment .................................................................................................
4-2
4-1
Common tools and equipment ....................................................................................................
4-2
4-2
Special tools, TMDE, and support equipment .............................................................................
4-2
4-3
Repair parts ................................................................................................................................
4-2
Section II
Unit service upon receipt of equipment .......................................................................................
4-3
4-4
Unpacking the equipment ...........................................................................................................
4-3
4-5
Inspecting unpacked equipment .................................................................................................
4-3
4-6
Preliminary servicing and adjusting of equipment ........................................................................
4-3
Section III
Unit preventive maintenance checks and services (PMCS) .........................................................
4-5
4-7
Unit preventive maintenance checks and services ......................................................................
4-5
Section IV
Unit troubleshooting procedures .................................................................................................
4-12
4-8
General ......................................................................................................................................
4-12
Section V
Unit maintenance procedures .....................................................................................................
4-14
4-9
Introduction ................................................................................................................................
4-14
4-10
Repair/replace nozzle assembly .................................................................................................
4-15
4-11
Repair/replace suction hose assembly ........................................................................................
4-18
4-12
Repair/replace discharge hose assembly ....................................................................................
4-19
4-13
Repair/replace Y-connectors and couplings ................................................................................
4-20
4-14
Replace drum suction stub unloader assembly ...........................................................................
4-21
4-15
Replace ground rod and attaching hardware ...............................................................................
4-23
4-16
Inspect/repair/replace sound enclosure cover assembly .............................................................
4-24
4-17
Inspect/replace electrical controls and indicators .........................................................................
4-27
4-18
Inspect/repair/replace sound enclosure rear panel assembly ......................................................
4-32
4-19
Inspect/replace front panel and mechanical controls and indicators ............................................
4-35
4-20
Inspect/test/replace air intake heater ..........................................................................................
4-42
4-21
Inspect/replace crankcase oil heater ...........................................................................................
4-43
4-22
Inspect/replace pump suction and discharge piping, coupling, and fittings ..................................
4-45
4-23
Replace/inspect/repair inlet (suction) flange and check valve assembly .....................................
4-47
4-24
Replace/inspect/service volute ...................................................................................................
4-49
4-25
Replace/service fuel tank, fuel filter, and fuel cock ......................................................................
4-51
4-26
Replace/service/inspect fuel Injection pipe .................................................................................
4-53
4-27
Replace/inspect air cleaner assembly and intake bend ................................................................
4-55
4-28
Replace/inspect exhaust silencer ................................................................................................
4-57
4-29
Replace/inspect/repair recoil starter assembly ............................................................................
4-59
4-30
Replace/inspect air intake baffle, flywheel, and cooling case cover ............................................
4-62
4-1
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