TM 9-2350-256-20
C H A P T E R 3
MAINTENANCE OF ENGINE
CHAPTER OVERVIEW
This chapter describes how to remove, ground-hop, clean, adjust, inspect, and install the powerplant and engine
related parts.
This chapter consists of the following paragraphs:
Para
Task
3-1
Replace
Page
Powerplant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2
Replace/Service Groundhop Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3-2.1
Emergency Boom Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14.4
3-3
Repair Engine Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3-4
Replace Engine Rear Mount and Base Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
3-5
Replace Engine Oil Filter Servicing Instruction Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3-6
Replace/Service Engine Damper Housing, Oil Filter, and Related Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3-7
Replace Oil Level Indicator and Related Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-23
3-8
Replace Oil Filler Tube and Related Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
3-9
Replace Oil Pan and Related Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
3-10
Replace Crankcase Breather Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
3-11
Replace Cylinder Head Oil Pan Drain Tubes and Related Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-28
3-12
Replace Oil Cooler Pressure-Actuated Bypass Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
3-13
Replace Generator Air Intake Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-32
3-13
Adjust Engine Idle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-33
3-15
Adjust Engine Solenoid Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-34
3-1 REPLACE POWERPLANT
THIS TASK COVERS
a. Removal
b. Installation
INITIAL SET-UP
Tools:
Material/Parts--Continued:
Tool kit, general mechanic’s (Appendix C,
Lockwashers (17) (Appendix G, item 134)
item 53)
Lockwashers (6) (Appendix G, item 138)
Parts kit, steering clutch housing output shaft
Lockwire (Appendix G, item 155)
(Appendix C, item 28)
Packing, preformed (Appendix G, item 187)
Sling, beam-type, powerplant or engine
Pin, cotter (Appendix G, item 206)
(Appendix C, item 47)
Pins, cotter (2) (Appendix G, item 212)
Stop, fabricated (Appendix E, item 1)
Wrench, torque (Appendix C, item 61)
Personnel Required:
Three
Material/Parts:
Adhesive, sealant, silicone (Appendix D, item 5)
Gasket (Appendix G, item 66)
Gasket (Appendix G, item 73)
Lockwashers (4) (Appendix G, item 110)
Lockwashers (3) (Appendix G, item 118)
Lockwashers (12) (Appendix G, item 132)
References:
Deleted
TM 9-2350-256-10
Equipment Condition:
Engine deck removed (see paragraph 9-51)
Vehicle track blocked (refer to TM 9-2350-256-10)
Change 1
3-1
