TM 9-2350-287-20-1
CHAPTER 3
POWERPACK MAINTENANCE
Paragraph
Page
Number
Paragraph Title
Number
3-1
General ............................................................................................................................................ 3-1
3-2
Powerpack Replacement .................................................................................................................. 3-2
3-3
Ground Hop Procedures ................................................................................................................... 3-16
3-4
Shock Mount and Bracket Replacement ........................................................................................... 3-36
3-5
Oil Filter Bracket Replacement ......................................................................................................... 3-38
3-6
Oil Cooler Hoses Replacement ......................................................................................................... 3-39
3-7
Oil Sampler System Replacement .................................................................................................... 3-41
3-8
Oil Filter and Oil Filter Adapter Repair .............................................................................................. 3-43
3-9
Liquid (Lube Oil) Level Gage Rod and Tube Assembly Replacement ................................................ 3-45
3-10
Crankcase and Gear Train Breather Tubes Replacement ................................................................. 3-46
3-11
Crossover Exhaust Pipe Replacement .............................................................................................. 3-47
3-12
Accessory Drive Adapter Replacement ............................................................................................. 3-48
3-1. GENERAL.
This chapter describes and illustrates procedures for removal and installation of the powerpack and transmission trunnion
caps. The powerpack consists of the engine, transfercase, transmission assembly, and related components.
Procedures for operating the powerpack after it has been removed from the vehicle are also described and illustrated.
The powerpack will be given periodic checks to find possible fire hazards. Inspect powerpack cooling accessories, air
shrouds, wiring harnesses, and hull compartment for foreign matter during each maintenance service.
Whenever a powerpack is removed for maintenance, or because of a malfunction, general cleaning and inspection of wiring
harnesses, hoses, tubes, and the engine compartment should be standard practice (paras 2-24 and 2-25).
Operating the powerpack out of the vehicle lets maintenance personnel inspect the control and drive components of the
powerpack by hand-operating the control linkages on the transmission. Components can be checked for proper functioning
and performance with the powerpack outside the vehicle without harm to the powerpack.
3-1
