TM-9-2815-200-35

ENGINE, WITH CONTAINER:TURBOSUPERCHARGED, DIESEL ,FUEL INJECTION ,90-DEGREE “V” TYPE, AIR - COOLED ,12 - CYLINDER , ASSEMBLY ;MODELS AVDS-1790-2M (2815-856-4996), AVDS-1790-2A AND AVDS-1790-2AM (2815-856-9005)

TECHNICAL MANUAL; DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS

TM-9-2815-200-35 - Page 134 of 779

4-52

4-8. Difference Between Piston Actuated

and Mechanical Fan Drive Clutch

The basic difference betwee n

the pisto n

actuated and mechanical fan drive clutch is the

redesig n

of the late clutch to eliminate th e

hydraulic disengagemen t

feature .

Th e

mechanical design provides complete in -

terchangeability between piston actuated an d

mechanical housin g

an d

cove r

assemblies .

However, individual parts contained within th e

assemblies are not interchangeable .

Figure 4-104. Removing fan drive clutc h

Figure 4-103. Removing housing cover an d

bearing from vertical drive shaft .

upper ball hearing from housing cover .

1. Position fan drive housing cover (A) on arbor press

using suitable support blocks.

2. Press ball bearing (B) in cover.

3. Install housing cover and bearing on vertical drive

shaft.

Figure 4-105. Pressing fan drive clutc h

upper ball bearing into housing cover .