TM-9-2320-366-34-3

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

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME NO. 3 OF 4

AUGUST 2005

CHANGE 2

TM-9-2320-366-34-3 - Page 890 of 1178

TM 9-2320-366-34-3

17-20

Change 2

17-3.

M1090/M1094 FOUR-WAY RELIEF VALVE REPLACEMENT/REPAIR (CONT)

(10) Press and hold DUMP BED UP/DOWN switch (8)

in UP position until hydraulic oil temperature

reaches 140-160º F (60-70º C).

(11) Perform STE/ICE-R test #51 (TM 9-4910-571-

12&P).

(12) Observe pressure reading of 2825-2875 psi (19478-

19822 kPa).

(13) If pressure is incorrect, loosen lock nut (9) on

pressure reducing valve adjusting screw (10).

(14) Turn pressure reducing valve adjusting screw (10)

counter clockwise to lower pressure, clockwise to

raise pressure.

CAUTION

WARNING

Hydraulic oil temperature must be 140-

160

F (60-70 C) prior to performing

adjustment.

Failure to comply may result in

inaccurate test results.

NOTE

•

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.

•

Steps (10) through (14) require the aid

of an assistant.

Hydraulic components are hot when

hydraulic

oil

reaches

operating

temperature.

Use caution when handling

hydraulic components.

Wear gloves or use

rags to hold metal objects.

Failure to

comply may result in injury to personnel.

NOTE

Hold

pressure-reducing valve adjusting

screw while tightening lock nut.