TM-9-2320-285-24-2

TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

OCTOBER 1985

TM-9-2320-285-24-2 - Page 104 of 698

TM 9-2320-285-24-2

3-17.

TRANSMISSION MAINTENANCE

a. Testing.

(1)

Road Test.

This task covers road testing of the tractor to verify proper transmission operation.

INITIAL SETUP:

Materials/Parts

Note pad

Pen

Personnel Required

Wheel Vehicle Mechanic MOS 63B

Equipment Condition

Paragraph

Condition Description

Parked on level surface; parking

brake applied; engine off.

STEP

LOCATION

ITEM

ACTION

REMARKS

TESTING

1

Tractor

a.

Engine

Start

cab

b.

Brakes

Release

c.

Tractor

Operate

Operate the tractor in all

positions of the gear shift

lever to check for slipping

and variations in shifting.

Note whether the shifts are

harsh or spongy.

Record

this information on your

note pad.

Observe closely

for slipping or engine

speed flareups.

Record this

information

NOTE

Slipping or flareup in any gear range usually indicates clutch problems.

d.

Gear shift

Position

Place gear shift lever in the

lever

drive (2-5) position so

that all automatic upshifts

can occur

3-98