TM-9-2320-366-34-1

M1083 SERIES, 5 TON, 6x6, MEDIUM TACTICAL VEHICLES (MTV)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME NO. 1 OF 4

AUGUST 2005

CHANGE 2

TM-9-2320-366-34-1 - Page 1232 of 1591

TM 9-2320-366-34-1

Change 2

2-1072.1

Test continued from page 2-1071.

CAUTION

NOTE

NOTE

In the event of a tachometer failure, a

HAND THROTTLE lever positioned to full

down is approximately 750 RPM.

(13) Set engine speed to idle 750 RPM

(TM 9-2320-366-10-1).

(14) Position PTO switch to off

(TM 9-2320-366-10-1).

(15) Shut down engine (TM 9-2320-366-10-1).

NOTE

(10) If pressure is not 2,825-2,875 PSI

(19,478-19,822 kPa), loosen lock nut on

adjusting screw on four-way relief valve.

Turn adjusting screw counter clockwise to

lower pressure, clockwise to raise

pressure.

(11) If pressure cannot be adjusted, clean or

replace four-way relief valve (para 17-3).

Hold adjusting screw on four-way relief

valve while tightening lock nut.

(12) Tighten locking nut on adjusting screw.

NOTE

Test continued at top of page.

Hydraulic oil temperature must be

145°F-155°F (63°C-68°C) prior to

performing troubleshooting checks.

Failure to comply may result in

inaccurate test results.

Holding DUMP BED UP/DOWN switch

in the UP position will force hydraulic

oil through relief valve and cause oil

temperature to rise.

Measure hydraulic oil temperature near

bottom of hydraulic reservoir.

(7) Attach a temperature indicator sticker to

hydraulic oil tank.

(8) Press and hold DUMP BED UP/DOWN

switch in the UP position

(TM 9-2320-366-10-1) until hydraulic oil

temperature reaches 145°F-155°F

(63°C-68°C).

(9) Perform STE/ICE Test #51 (TM 9-4910-

571-12&P)

Note location of adjusting screw on

four-way relief valve before performing

step (10).

PRESSURE TEST (CONT)

PRESSURE TEST (CONT)