TM-9-2815-224-34-P

ENGINE, DIESEL:8-CYLINDER TURBOCHARGED, DETROIT DIESEL CORPORATION MODEL 8V92TA

DIRECT SUPPORT AND GENERAL SUPPORT MAINTENACE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

JANUARY 1988

TM-9-2815-224-34-P - Page 504 of 554

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TM 9-2815-224-34&P

Engine Tune-Up Instructions (Cont)

19-9. ENGINE SPEED ADJUSTMENTS (CONT).

b.

Engine Idle Speed, Buffer Screw and Buffer Switch Adjustment.

l

NOTE

l

There are three styles of buffer switches, Model A Model B and Model C.

Buffer screw and buffer switch will turn out with locknut.

(1)

Adjust maximum no-load engine speed (para 19-9).

NOTE

Perform step (1.1) for Model B and Model C buffer switches.

(1.1)

Tag, mark and remove wires (0.1) from buffer switch (0.2).

NOTE

Perform step (2) for Model A buffer switch.

(3)

(4)

(5)

Correct

(6)

(7)

(8)

NOTE

Gasket is not replaced unless damaged.

Loosen nut (1) and remove buffer switch (2)

Loosen locknut (4) and back out to 0.65in. (15.88 mm) from governor housing (5).

Loosen locknut (6) from idle adjusting

screw (7).

When told by Soldier A, Soldier B starts

engine and operates for 15 minutes

(TM 9-2320-279-10).

NOTE

engine idle speed is 675-725 rpm.

Turn idle adjusting screw (7) to correct

engine idle speed.

Tighten locknut (6) when correct engine

idle speed is reached.

When told by Soldier A, Soldier B stops

engine.

and bracket (3).

(9)

(10)

Install high speed spring retainer cover (8) with two screws (9) and lockwashers (10).

Install air hose (11) on cover (8).

(11)

Remove inlet shield.

19-24 Change 2