TM-9-2320-431-10-2

TRUCK, WRECKER, 8X8, M984A1

TECHNICAL MANUAL; OPERATOR'S MANUAL; PART 2 OF 2

JUNE 2009

TM-9-2320-431-10-2 - Page 175 of 712

2.

Operate engine (Volume 1, WP 0044) for 20 minutes with PTO enabled to bring

hydraulic fluid up to operating temperature.

3.

Check hydraulic fluid temperature at reservoir. Reservoir should be warm.

CONDITION/INDICATION

Does hydraulic fluid reach normal operating temperature after running engine for 20

minutes with PTO engaged?

DECISION

Hydraulic fluid is below normal operating temperature. - Test 3 - Does hydraulic fluid

reach normal operating temperature after cycling mast control down?Test 4 - Is

hydraulic fluid overheated?

Hydraulic fluid is at normal operating temperature. - Test 5 - Do crane controls operate

normally after hydraulic fluid is at normal operating temperature?

TEST 3 - Does hydraulic fluid reach normal operating temperature after cycling mast

control down?

WARNING

Reservoir may be very hot. Use care when placing hand near reservoir.

Reservoir can become hot enough to cause serious burns. Be careful not

to touch the reservoir with bare hands or allow body to contact reservoir.

Use gloves and insulated pads as necessary. Failure to comply may

result in injury or death to personnel.

1.

Lower crane to stowed position. (Volume 1, WP 0106)

2.

Operate MAST control DOWN. (Volume 1, WP 0106) Hold MAST control DOWN for

approximately 30 seconds, then return control to NEUTRAL position. Repeat

procedure several times until hydraulic fluid is warmed.

TM 9-2320-431-10-2

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